712 Commits

Author SHA1 Message Date
Richard Raya
a9e2d194be Merge branch 'linux-4.14.y' of https://github.com/openela/kernel-lts
* 'linux-4.14.y' of https://github.com/openela/kernel-lts: (350 commits)
  LTS: Update to 4.14.340
  fs/aio: Restrict kiocb_set_cancel_fn() to I/O submitted via libaio
  KVM: arm64: vgic-its: Test for valid IRQ in its_sync_lpi_pending_table()
  PCI/MSI: Prevent MSI hardware interrupt number truncation
  s390: use the correct count for __iowrite64_copy()
  packet: move from strlcpy with unused retval to strscpy
  ipv6: sr: fix possible use-after-free and null-ptr-deref
  nouveau: fix function cast warnings
  scsi: jazz_esp: Only build if SCSI core is builtin
  RDMA/srpt: fix function pointer cast warnings
  RDMA/srpt: Support specifying the srpt_service_guid parameter
  IB/hfi1: Fix a memleak in init_credit_return
  usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs
  l2tp: pass correct message length to ip6_append_data
  gtp: fix use-after-free and null-ptr-deref in gtp_genl_dump_pdp()
  dm-crypt: don't modify the data when using authenticated encryption
  mm: memcontrol: switch to rcu protection in drain_all_stock()
  s390/qeth: Fix potential loss of L3-IP@ in case of network issues
  virtio-blk: Ensure no requests in virtqueues before deleting vqs.
  firewire: core: send bus reset promptly on gap count error
  ...

Change-Id: Ieafdd459ee41343bf15ed781b3e45adc2be29cc1
Signed-off-by: Richard Raya <rdxzv.dev@gmail.com>
2024-03-26 00:15:05 -03:00
Anton Ivanov
d7d0f5e11b um: Fix naming clash between UML and scheduler
[ Upstream commit 541d4e4d435c8b9bfd29f70a1da4a2db97794e0a ]

__cant_sleep was already used and exported by the scheduler.
The name had to be changed to a UML specific one.

Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Reviewed-by: Peter Lafreniere <peter@n8pjl.ca>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 7ad082147c5d4e74b06ee5d9fd992fcdc1bf75bb)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
2024-03-08 08:21:34 +00:00
Greg Kroah-Hartman
52d189eb07 This is the 4.14.321 stable release
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Merge 4.14.321 into android-4.14-stable

Changes in 4.14.321
	init: Provide arch_cpu_finalize_init()
	x86/cpu: Switch to arch_cpu_finalize_init()
	ARM: cpu: Switch to arch_cpu_finalize_init()
	ia64/cpu: Switch to arch_cpu_finalize_init()
	m68k/cpu: Switch to arch_cpu_finalize_init()
	mips/cpu: Switch to arch_cpu_finalize_init()
	sh/cpu: Switch to arch_cpu_finalize_init()
	sparc/cpu: Switch to arch_cpu_finalize_init()
	um/cpu: Switch to arch_cpu_finalize_init()
	init: Remove check_bugs() leftovers
	init: Invoke arch_cpu_finalize_init() earlier
	init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()
	x86/fpu: Remove cpuinfo argument from init functions
	x86/fpu: Mark init functions __init
	x86/fpu: Move FPU initialization into arch_cpu_finalize_init()
	x86/speculation: Add Gather Data Sampling mitigation
	x86/speculation: Add force option to GDS mitigation
	x86/speculation: Add Kconfig option for GDS
	KVM: Add GDS_NO support to KVM
	x86/xen: Fix secondary processors' FPU initialization
	Documentation/x86: Fix backwards on/off logic about YMM support
	xen/netback: Fix buffer overrun triggered by unusual packet
	x86: fix backwards merge of GDS/SRSO bit
	Linux 4.14.321

Change-Id: I8fef844c24ea4660d9fb1f779ab4bddc19753078
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-08-11 08:36:41 +00:00
Thomas Gleixner
8b844addfd um/cpu: Switch to arch_cpu_finalize_init()
commit 9349b5cd0908f8afe95529fc7a8cbb1417df9b0c upstream

check_bugs() is about to be phased out. Switch over to the new
arch_cpu_finalize_init() implementation.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Richard Weinberger <richard@nod.at>
Link: https://lore.kernel.org/r/20230613224545.493148694@linutronix.de
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-08 19:48:24 +02:00
Greg Kroah-Hartman
c8ea89af5f This is the 4.14.296 stable release
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Merge 4.14.296 into android-4.14-stable

Changes in 4.14.296
	uas: add no-uas quirk for Hiksemi usb_disk
	usb-storage: Add Hiksemi USB3-FW to IGNORE_UAS
	uas: ignore UAS for Thinkplus chips
	net: usb: qmi_wwan: Add new usb-id for Dell branded EM7455
	ntfs: fix BUG_ON in ntfs_lookup_inode_by_name()
	mmc: moxart: fix 4-bit bus width and remove 8-bit bus width
	mm/page_alloc: fix race condition between build_all_zonelists and page allocation
	mm: prevent page_frag_alloc() from corrupting the memory
	mm/migrate_device.c: flush TLB while holding PTL
	soc: sunxi: sram: Actually claim SRAM regions
	soc: sunxi: sram: Fix debugfs info for A64 SRAM C
	Revert "drm: bridge: analogix/dp: add panel prepare/unprepare in suspend/resume time"
	Input: melfas_mip4 - fix return value check in mip4_probe()
	usbnet: Fix memory leak in usbnet_disconnect()
	nvme: add new line after variable declatation
	nvme: Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
	selftests: Fix the if conditions of in test_extra_filter()
	clk: iproc: Minor tidy up of iproc pll data structures
	clk: iproc: Do not rely on node name for correct PLL setup
	Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
	i2c: dev: prevent ZERO_SIZE_PTR deref in i2cdev_ioctl_rdwr()
	ARM: fix function graph tracer and unwinder dependencies
	fs: fix UAF/GPF bug in nilfs_mdt_destroy
	dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property
	dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API failure
	ARM: dts: fix Moxa SDIO 'compatible', remove 'sdhci' misnomer
	net/ieee802154: fix uninit value bug in dgram_sendmsg
	um: Cleanup syscall_handler_t cast in syscalls_32.h
	um: Cleanup compiler warning in arch/x86/um/tls_32.c
	usb: mon: make mmapped memory read only
	USB: serial: ftdi_sio: fix 300 bps rate for SIO
	mmc: core: Replace with already defined values for readability
	mmc: core: Terminate infinite loop in SD-UHS voltage switch
	rpmsg: qcom: glink: replace strncpy() with strscpy_pad()
	netfilter: nf_queue: fix socket leak
	nilfs2: fix NULL pointer dereference at nilfs_bmap_lookup_at_level()
	nilfs2: fix leak of nilfs_root in case of writer thread creation failure
	nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
	ceph: don't truncate file in atomic_open
	random: clamp credited irq bits to maximum mixed
	ALSA: hda: Fix position reporting on Poulsbo
	scsi: stex: Properly zero out the passthrough command structure
	USB: serial: qcserial: add new usb-id for Dell branded EM7455
	random: restore O_NONBLOCK support
	random: avoid reading two cache lines on irq randomness
	wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
	Input: xpad - add supported devices as contributed on github
	Input: xpad - fix wireless 360 controller breaking after suspend
	random: use expired timer rather than wq for mixing fast pool
	ALSA: oss: Fix potential deadlock at unregistration
	ALSA: rawmidi: Drop register_mutex in snd_rawmidi_free()
	ALSA: usb-audio: Fix potential memory leaks
	ALSA: usb-audio: Fix NULL dererence at error path
	iio: dac: ad5593r: Fix i2c read protocol requirements
	fs: dlm: fix race between test_bit() and queue_work()
	fs: dlm: handle -EBUSY first in lock arg validation
	HID: multitouch: Add memory barriers
	quota: Check next/prev free block number after reading from quota file
	regulator: qcom_rpm: Fix circular deferral regression
	Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
	parisc: fbdev/stifb: Align graphics memory size to 4MB
	UM: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
	PCI: Sanitise firmware BAR assignments behind a PCI-PCI bridge
	fbdev: smscufx: Fix use-after-free in ufx_ops_open()
	nilfs2: fix use-after-free bug of struct nilfs_root
	nilfs2: fix lockdep warnings in page operations for btree nodes
	nilfs2: fix lockdep warnings during disk space reclamation
	ext4: avoid crash when inline data creation follows DIO write
	ext4: fix null-ptr-deref in ext4_write_info
	ext4: make ext4_lazyinit_thread freezable
	ext4: place buffer head allocation before handle start
	livepatch: fix race between fork and KLP transition
	ftrace: Properly unset FTRACE_HASH_FL_MOD
	ring-buffer: Allow splice to read previous partially read pages
	ring-buffer: Check pending waiters when doing wake ups as well
	ring-buffer: Fix race between reset page and reading page
	KVM: x86/emulator: Fix handing of POP SS to correctly set interruptibility
	KVM: nVMX: Unconditionally purge queued/injected events on nested "exit"
	gcov: support GCC 12.1 and newer compilers
	selinux: use "grep -E" instead of "egrep"
	sh: machvec: Use char[] for section boundaries
	wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
	wifi: mac80211: allow bw change during channel switch in mesh
	wifi: rtl8xxxu: tighten bounds checking in rtl8xxxu_read_efuse()
	spi: qup: add missing clk_disable_unprepare on error in spi_qup_resume()
	spi: qup: add missing clk_disable_unprepare on error in spi_qup_pm_resume_runtime()
	wifi: rtl8xxxu: Fix skb misuse in TX queue selection
	wifi: rtl8xxxu: gen2: Fix mistake in path B IQ calibration
	net: fs_enet: Fix wrong check in do_pd_setup
	spi/omap100k:Fix PM disable depth imbalance in omap1_spi100k_probe
	netfilter: nft_fib: Fix for rpath check with VRF devices
	spi: s3c64xx: Fix large transfers with DMA
	vhost/vsock: Use kvmalloc/kvfree for larger packets.
	mISDN: fix use-after-free bugs in l1oip timer handlers
	tcp: fix tcp_cwnd_validate() to not forget is_cwnd_limited
	net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
	bnx2x: fix potential memory leak in bnx2x_tpa_stop()
	drm/mipi-dsi: Detach devices when removing the host
	platform/x86: msi-laptop: Fix old-ec check for backlight registering
	platform/x86: msi-laptop: Fix resource cleanup
	drm/bridge: megachips: Fix a null pointer dereference bug
	mmc: au1xmmc: Fix an error handling path in au1xmmc_probe()
	ASoC: eureka-tlv320: Hold reference returned from of_find_xxx API
	ALSA: dmaengine: increment buffer pointer atomically
	mmc: wmt-sdmmc: Fix an error handling path in wmt_mci_probe()
	memory: of: Fix refcount leak bug in of_get_ddr_timings()
	soc: qcom: smsm: Fix refcount leak bugs in qcom_smsm_probe()
	soc: qcom: smem_state: Add refcounting for the 'state->of_node'
	ARM: dts: turris-omnia: Fix mpp26 pin name and comment
	ARM: dts: kirkwood: lsxl: fix serial line
	ARM: dts: kirkwood: lsxl: remove first ethernet port
	ARM: Drop CMDLINE_* dependency on ATAGS
	ARM: dts: exynos: fix polarity of VBUS GPIO of Origen
	iio: adc: at91-sama5d2_adc: fix AT91_SAMA5D2_MR_TRACKTIM_MAX
	iio: inkern: only release the device node when done with it
	iio: ABI: Fix wrong format of differential capacitance channel ABI.
	clk: oxnas: Hold reference returned by of_get_parent()
	clk: tegra: Fix refcount leak in tegra210_clock_init
	clk: tegra: Fix refcount leak in tegra114_clock_init
	clk: tegra20: Fix refcount leak in tegra20_clock_init
	HSI: omap_ssi: Fix refcount leak in ssi_probe
	HSI: omap_ssi_port: Fix dma_map_sg error check
	media: exynos4-is: fimc-is: Add of_node_put() when breaking out of loop
	tty: xilinx_uartps: Fix the ignore_status
	media: xilinx: vipp: Fix refcount leak in xvip_graph_dma_init
	RDMA/rxe: Fix "kernel NULL pointer dereference" error
	RDMA/rxe: Fix the error caused by qp->sk
	dyndbg: fix module.dyndbg handling
	dyndbg: let query-modname override actual module name
	ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()
	ata: fix ata_id_has_devslp()
	ata: fix ata_id_has_ncq_autosense()
	ata: fix ata_id_has_dipm()
	md/raid5: Ensure stripe_fill happens on non-read IO with journal
	xhci: Don't show warning for reinit on known broken suspend
	usb: gadget: function: fix dangling pnp_string in f_printer.c
	drivers: serial: jsm: fix some leaks in probe
	phy: qualcomm: call clk_disable_unprepare in the error handling
	firmware: google: Test spinlock on panic path to avoid lockups
	serial: 8250: Fix restoring termios speed after suspend
	fsi: core: Check error number after calling ida_simple_get
	mfd: intel_soc_pmic: Fix an error handling path in intel_soc_pmic_i2c_probe()
	mfd: fsl-imx25: Fix an error handling path in mx25_tsadc_setup_irq()
	mfd: lp8788: Fix an error handling path in lp8788_probe()
	mfd: lp8788: Fix an error handling path in lp8788_irq_init() and lp8788_irq_init()
	mfd: sm501: Add check for platform_driver_register()
	dmaengine: ioat: stop mod_timer from resurrecting deleted timer in __cleanup()
	spmi: pmic-arb: correct duplicate APID to PPID mapping logic
	clk: bcm2835: fix bcm2835_clock_rate_from_divisor declaration
	clk: ti: dra7-atl: Fix reference leak in of_dra7_atl_clk_probe
	mailbox: bcm-ferxrm-mailbox: Fix error check for dma_map_sg
	powerpc/math_emu/efp: Include module.h
	powerpc/sysdev/fsl_msi: Add missing of_node_put()
	powerpc/pci_dn: Add missing of_node_put()
	powerpc/powernv: add missing of_node_put() in opal_export_attrs()
	powerpc: Fix SPE Power ISA properties for e500v1 platforms
	iommu/omap: Fix buffer overflow in debugfs
	iommu/iova: Fix module config properly
	crypto: cavium - prevent integer overflow loading firmware
	f2fs: fix race condition on setting FI_NO_EXTENT flag
	ACPI: video: Add Toshiba Satellite/Portege Z830 quirk
	MIPS: BCM47XX: Cast memcmp() of function to (void *)
	powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
	thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
	NFSD: Return nfserr_serverfault if splice_ok but buf->pages have data
	wifi: brcmfmac: fix invalid address access when enabling SCAN log level
	openvswitch: Fix double reporting of drops in dropwatch
	openvswitch: Fix overreporting of drops in dropwatch
	tcp: annotate data-race around tcp_md5sig_pool_populated
	wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()
	xfrm: Update ipcomp_scratches with NULL when freed
	wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()
	Bluetooth: L2CAP: initialize delayed works at l2cap_chan_create()
	Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times
	can: bcm: check the result of can_send() in bcm_can_tx()
	wifi: rt2x00: don't run Rt5592 IQ calibration on MT7620
	wifi: rt2x00: set correct TX_SW_CFG1 MAC register for MT7620
	wifi: rt2x00: set SoC wmac clock register
	wifi: rt2x00: correctly set BBP register 86 for MT7620
	net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory
	Bluetooth: L2CAP: Fix user-after-free
	r8152: Rate limit overflow messages
	drm: Use size_t type for len variable in drm_copy_field()
	drm: Prevent drm_copy_field() to attempt copying a NULL pointer
	drm/vc4: vec: Fix timings for VEC modes
	platform/x86: msi-laptop: Change DMI match / alias strings to fix module autoloading
	drm/amdgpu: fix initial connector audio value
	ARM: dts: imx7d-sdb: config the max pressure for tsc2046
	ARM: dts: imx6q: add missing properties for sram
	ARM: dts: imx6dl: add missing properties for sram
	ARM: dts: imx6qp: add missing properties for sram
	ARM: dts: imx6sl: add missing properties for sram
	media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
	scsi: 3w-9xxx: Avoid disabling device if failing to enable it
	nbd: Fix hung when signal interrupts nbd_start_device_ioctl()
	HID: roccat: Fix use-after-free in roccat_read()
	md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d
	usb: host: xhci: Fix potential memory leak in xhci_alloc_stream_info()
	usb: musb: Fix musb_gadget.c rxstate overflow bug
	Revert "usb: storage: Add quirk for Samsung Fit flash"
	usb: idmouse: fix an uninit-value in idmouse_open
	perf intel-pt: Fix segfault in intel_pt_print_info() with uClibc
	net: ieee802154: return -EINVAL for unknown addr type
	net/ieee802154: don't warn zero-sized raw_sendmsg()
	ext4: continue to expand file system when the target size doesn't reach
	md: Replace snprintf with scnprintf
	efi: libstub: drop pointless get_memory_map() call
	inet: fully convert sk->sk_rx_dst to RCU rules
	thermal: intel_powerclamp: Use first online CPU as control_cpu
	Linux 4.14.296

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7d490d1d6185e26e23921167583f36793b87b9c1
2022-10-26 13:32:32 +02:00
Huacai Chen
dbd964a733 UM: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
commit 16c546e148fa6d14a019431436a6f7b4087dbccd upstream.

When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS is selected,
cpu_max_bits_warn() generates a runtime warning similar as below while
we show /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)
instead of NR_CPUS to iterate CPUs.

[    3.052463] ------------[ cut here ]------------
[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0
[    3.070072] Modules linked in: efivarfs autofs4
[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052
[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000
[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430
[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff
[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890
[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa
[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000
[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000
[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000
[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286
[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c
[    3.195868]         ...
[    3.199917] Call Trace:
[    3.203941] [<90000000002086d8>] show_stack+0x38/0x14c
[    3.210666] [<9000000000cf846c>] dump_stack_lvl+0x60/0x88
[    3.217625] [<900000000023d268>] __warn+0xd0/0x100
[    3.223958] [<9000000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc
[    3.231150] [<9000000000210220>] show_cpuinfo+0x5e8/0x5f0
[    3.238080] [<90000000004f578c>] seq_read_iter+0x354/0x4b4
[    3.245098] [<90000000004c2e90>] new_sync_read+0x17c/0x1c4
[    3.252114] [<90000000004c5174>] vfs_read+0x138/0x1d0
[    3.258694] [<90000000004c55f8>] ksys_read+0x70/0x100
[    3.265265] [<9000000000cfde9c>] do_syscall+0x7c/0x94
[    3.271820] [<9000000000202fe4>] handle_syscall+0xc4/0x160
[    3.281824] ---[ end trace 8b484262b4b8c24c ]---

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-10-26 13:16:56 +02:00
Greg Kroah-Hartman
22dc72c914 This is the 4.14.233 stable release
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Merge 4.14.233 into android-4.14-stable

Changes in 4.14.233
	usbip: vudc synchronize sysfs code paths
	ACPI: tables: x86: Reserve memory occupied by ACPI tables
	ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade()
	bpf: Fix backport of "bpf: restrict unknown scalars of mixed signed bounds for unprivileged"
	bpf: fix up selftests after backports were fixed
	net: usb: ax88179_178a: initialize local variables before use
	iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd()
	MIPS: Introduce isa-rev.h to define MIPS_ISA_REV
	MIPS: cpu-features.h: Replace __mips_isa_rev with MIPS_ISA_REV
	mips: Do not include hi and lo in clobber list for R6
	bpf: Fix masking negation logic upon negative dst register
	iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_gen2_enqueue_hcmd()
	ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX
	USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet
	USB: Add reset-resume quirk for WD19's Realtek Hub
	platform/x86: thinkpad_acpi: Correct thermal sensor allocation
	s390/disassembler: increase ebpf disasm buffer size
	ACPI: custom_method: fix potential use-after-free issue
	ACPI: custom_method: fix a possible memory leak
	arm64: dts: mt8173: fix property typo of 'phys' in dsi node
	ecryptfs: fix kernel panic with null dev_name
	spi: spi-ti-qspi: Free DMA resources
	mmc: block: Update ext_csd.cache_ctrl if it was written
	mmc: core: Do a power cycle when the CMD11 fails
	mmc: core: Set read only for SD cards with permanent write protect bit
	cifs: Return correct error code from smb2_get_enc_key
	btrfs: fix metadata extent leak after failure to create subvolume
	intel_th: pci: Add Rocket Lake CPU support
	fbdev: zero-fill colormap in fbcmap.c
	staging: wimax/i2400m: fix byte-order issue
	crypto: api - check for ERR pointers in crypto_destroy_tfm()
	usb: gadget: uvc: add bInterval checking for HS mode
	usb: gadget: f_uac1: validate input parameters
	usb: dwc3: gadget: Ignore EP queue requests during bus reset
	usb: xhci: Fix port minor revision
	PCI: PM: Do not read power state in pci_enable_device_flags()
	x86/build: Propagate $(CLANG_FLAGS) to $(REALMODE_FLAGS)
	tee: optee: do not check memref size on return from Secure World
	perf/arm_pmu_platform: Fix error handling
	spi: dln2: Fix reference leak to master
	spi: omap-100k: Fix reference leak to master
	intel_th: Consistency and off-by-one fix
	phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()
	btrfs: convert logic BUG_ON()'s in replace_path to ASSERT()'s
	scsi: lpfc: Fix incorrect dbde assignment when building target abts wqe
	scsi: lpfc: Fix pt2pt connection does not recover after LOGO
	scsi: target: pscsi: Fix warning in pscsi_complete_cmd()
	media: ite-cir: check for receive overflow
	power: supply: bq27xxx: fix power_avg for newer ICs
	extcon: arizona: Fix some issues when HPDET IRQ fires after the jack has been unplugged
	media: media/saa7164: fix saa7164_encoder_register() memory leak bugs
	media: gspca/sq905.c: fix uninitialized variable
	power: supply: Use IRQF_ONESHOT
	drm/amdgpu : Fix asic reset regression issue introduce by 8f211fe8ac7c4f
	scsi: qla2xxx: Always check the return value of qla24xx_get_isp_stats()
	scsi: qla2xxx: Fix use after free in bsg
	scsi: scsi_dh_alua: Remove check for ASC 24h in alua_rtpg()
	media: em28xx: fix memory leak
	media: vivid: update EDID
	clk: socfpga: arria10: Fix memory leak of socfpga_clk on error return
	power: supply: generic-adc-battery: fix possible use-after-free in gab_remove()
	power: supply: s3c_adc_battery: fix possible use-after-free in s3c_adc_bat_remove()
	media: adv7604: fix possible use-after-free in adv76xx_remove()
	media: i2c: adv7511-v4l2: fix possible use-after-free in adv7511_remove()
	media: i2c: adv7842: fix possible use-after-free in adv7842_remove()
	media: dvb-usb: fix memory leak in dvb_usb_adapter_init
	media: gscpa/stv06xx: fix memory leak
	drm/msm/mdp5: Configure PP_SYNC_HEIGHT to double the vtotal
	drm/amdgpu: fix NULL pointer dereference
	scsi: lpfc: Fix crash when a REG_RPI mailbox fails triggering a LOGO response
	scsi: lpfc: Remove unsupported mbox PORT_CAPABILITIES logic
	scsi: libfc: Fix a format specifier
	ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer
	ALSA: hda/conexant: Re-order CX5066 quirk table entries
	ALSA: sb: Fix two use after free in snd_sb_qsound_build
	btrfs: fix race when picking most recent mod log operation for an old root
	arm64/vdso: Discard .note.gnu.property sections in vDSO
	openvswitch: fix stack OOB read while fragmenting IPv4 packets
	ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
	NFSv4: Don't discard segments marked for return in _pnfs_return_layout()
	jffs2: Fix kasan slab-out-of-bounds problem
	powerpc/eeh: Fix EEH handling for hugepages in ioremap space.
	powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h
	intel_th: pci: Add Alder Lake-M support
	md/raid1: properly indicate failure when ending a failed write request
	security: commoncap: fix -Wstringop-overread warning
	Fix misc new gcc warnings
	jffs2: check the validity of dstlen in jffs2_zlib_compress()
	Revert 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op")
	posix-timers: Preserve return value in clock_adjtime32()
	ftrace: Handle commands when closing set_ftrace_filter file
	ext4: fix check to prevent false positive report of incorrect used inodes
	ext4: fix error code in ext4_commit_super
	media: dvbdev: Fix memory leak in dvb_media_device_free()
	usb: gadget: dummy_hcd: fix gpf in gadget_setup
	usb: gadget: Fix double free of device descriptor pointers
	usb: gadget/function/f_fs string table fix for multiple languages
	usb: dwc3: gadget: Fix START_TRANSFER link state check
	tracing: Map all PIDs to command lines
	dm persistent data: packed struct should have an aligned() attribute too
	dm space map common: fix division bug in sm_ll_find_free_block()
	dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails
	modules: mark ref_module static
	modules: mark find_symbol static
	modules: mark each_symbol_section static
	modules: unexport __module_text_address
	modules: unexport __module_address
	modules: rename the licence field in struct symsearch to license
	modules: return licensing information from find_symbol
	modules: inherit TAINT_PROPRIETARY_MODULE
	Bluetooth: verify AMP hci_chan before amp_destroy
	hsr: use netdev_err() instead of WARN_ONCE()
	bluetooth: eliminate the potential race condition when removing the HCI controller
	net/nfc: fix use-after-free llcp_sock_bind/connect
	MIPS: pci-rt2880: fix slot 0 configuration
	FDDI: defxx: Bail out gracefully with unassigned PCI resource for CSR
	misc: lis3lv02d: Fix false-positive WARN on various HP models
	misc: vmw_vmci: explicitly initialize vmci_notify_bm_set_msg struct
	misc: vmw_vmci: explicitly initialize vmci_datagram payload
	tracing: Restructure trace_clock_global() to never block
	md-cluster: fix use-after-free issue when removing rdev
	md: split mddev_find
	md: factor out a mddev_find_locked helper from mddev_find
	md: md_open returns -EBUSY when entering racing area
	ipw2x00: potential buffer overflow in libipw_wx_set_encodeext()
	cfg80211: scan: drop entry from hidden_list on overflow
	drm/radeon: fix copy of uninitialized variable back to userspace
	ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries
	ALSA: hda/realtek: Re-order ALC882 Sony quirk table entries
	ALSA: hda/realtek: Re-order ALC269 Sony quirk table entries
	ALSA: hda/realtek: Re-order ALC269 Lenovo quirk table entries
	ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices
	x86/cpu: Initialize MSR_TSC_AUX if RDTSCP *or* RDPID is supported
	KVM: s390: split kvm_s390_logical_to_effective
	KVM: s390: fix guarded storage control register handling
	KVM: s390: split kvm_s390_real_to_abs
	usb: gadget: pch_udc: Revert d3cb25a12138 completely
	memory: gpmc: fix out of bounds read and dereference on gpmc_cs[]
	ARM: dts: exynos: correct PMIC interrupt trigger level on Odroid X/U3 family
	ARM: dts: exynos: correct PMIC interrupt trigger level on SMDK5250
	ARM: dts: exynos: correct PMIC interrupt trigger level on Snow
	serial: stm32: fix incorrect characters on console
	serial: stm32: fix tx_empty condition
	usb: typec: tcpci: Check ROLE_CONTROL while interpreting CC_STATUS
	x86/microcode: Check for offline CPUs before requesting new microcode
	usb: gadget: pch_udc: Replace cpu_to_le32() by lower_32_bits()
	usb: gadget: pch_udc: Check if driver is present before calling ->setup()
	usb: gadget: pch_udc: Check for DMA mapping error
	crypto: qat - don't release uninitialized resources
	crypto: qat - ADF_STATUS_PF_RUNNING should be set after adf_dev_init
	fotg210-udc: Fix DMA on EP0 for length > max packet size
	fotg210-udc: Fix EP0 IN requests bigger than two packets
	fotg210-udc: Remove a dubious condition leading to fotg210_done
	fotg210-udc: Mask GRP2 interrupts we don't handle
	fotg210-udc: Don't DMA more than the buffer can take
	fotg210-udc: Complete OUT requests on short packets
	mtd: require write permissions for locking and badblock ioctls
	bus: qcom: Put child node before return
	phy: marvell: ARMADA375_USBCLUSTER_PHY should not default to y, unconditionally
	crypto: qat - fix error path in adf_isr_resource_alloc()
	USB: gadget: udc: fix wrong pointer passed to IS_ERR() and PTR_ERR()
	mtd: rawnand: gpmi: Fix a double free in gpmi_nand_init
	staging: rtl8192u: Fix potential infinite loop
	staging: greybus: uart: fix unprivileged TIOCCSERIAL
	spi: Fix use-after-free with devm_spi_alloc_*
	soc: qcom: mdt_loader: Validate that p_filesz < p_memsz
	soc: qcom: mdt_loader: Detect truncated read of segments
	ACPI: CPPC: Replace cppc_attr with kobj_attribute
	crypto: qat - Fix a double free in adf_create_ring
	usb: gadget: r8a66597: Add missing null check on return from platform_get_resource
	USB: cdc-acm: fix unprivileged TIOCCSERIAL
	tty: actually undefine superseded ASYNC flags
	tty: fix return value for unsupported ioctls
	firmware: qcom-scm: Fix QCOM_SCM configuration
	platform/x86: pmc_atom: Match all Beckhoff Automation baytrail boards with critclk_systems DMI table
	x86/platform/uv: Fix !KEXEC build failure
	Drivers: hv: vmbus: Increase wait time for VMbus unload
	ttyprintk: Add TTY hangup callback.
	media: vivid: fix assignment of dev->fbuf_out_flags
	media: omap4iss: return error code when omap4iss_get() failed
	media: m88rs6000t: avoid potential out-of-bounds reads on arrays
	x86/kprobes: Fix to check non boostable prefixes correctly
	pata_arasan_cf: fix IRQ check
	pata_ipx4xx_cf: fix IRQ check
	sata_mv: add IRQ checks
	ata: libahci_platform: fix IRQ check
	vfio/mdev: Do not allow a mdev_type to have a NULL parent pointer
	clk: uniphier: Fix potential infinite loop
	scsi: jazz_esp: Add IRQ check
	scsi: sun3x_esp: Add IRQ check
	scsi: sni_53c710: Add IRQ check
	mfd: stm32-timers: Avoid clearing auto reload register
	HSI: core: fix resource leaks in hsi_add_client_from_dt()
	x86/events/amd/iommu: Fix sysfs type mismatch
	HID: plantronics: Workaround for double volume key presses
	perf symbols: Fix dso__fprintf_symbols_by_name() to return the number of printed chars
	net: lapbether: Prevent racing when checking whether the netif is running
	powerpc/prom: Mark identical_pvr_fixup as __init
	powerpc: Fix HAVE_HARDLOCKUP_DETECTOR_ARCH build configuration
	ALSA: core: remove redundant spin_lock pair in snd_card_disconnect
	bug: Remove redundant condition check in report_bug
	nfc: pn533: prevent potential memory corruption
	ALSA: usb-audio: Add error checks for usb_driver_claim_interface() calls
	liquidio: Fix unintented sign extension of a left shift of a u16
	powerpc/perf: Fix PMU constraint check for EBB events
	powerpc: iommu: fix build when neither PCI or IBMVIO is set
	mac80211: bail out if cipher schemes are invalid
	mt7601u: fix always true expression
	IB/hfi1: Fix error return code in parse_platform_config()
	net: thunderx: Fix unintentional sign extension issue
	i2c: cadence: add IRQ check
	i2c: emev2: add IRQ check
	i2c: jz4780: add IRQ check
	i2c: sh7760: add IRQ check
	MIPS: pci-legacy: stop using of_pci_range_to_resource
	powerpc/pseries: extract host bridge from pci_bus prior to bus removal
	rtlwifi: 8821ae: upgrade PHY and RF parameters
	i2c: sh7760: fix IRQ error path
	mwl8k: Fix a double Free in mwl8k_probe_hw
	vsock/vmci: log once the failed queue pair allocation
	RDMA/i40iw: Fix error unwinding when i40iw_hmc_sd_one fails
	net: davinci_emac: Fix incorrect masking of tx and rx error channel
	ath9k: Fix error check in ath9k_hw_read_revisions() for PCI devices
	powerpc/52xx: Fix an invalid ASM expression ('addi' used instead of 'add')
	net:emac/emac-mac: Fix a use after free in emac_mac_tx_buf_send
	net:nfc:digital: Fix a double free in digital_tg_recv_dep_req
	kfifo: fix ternary sign extension bugs
	smp: Fix smp_call_function_single_async prototype
	Revert "net/sctp: fix race condition in sctp_destroy_sock"
	sctp: delay auto_asconf init until binding the first addr
	Revert "of/fdt: Make sure no-map does not remove already reserved regions"
	Revert "fdt: Properly handle "no-map" field in the memory region"
	tpm: fix error return code in tpm2_get_cc_attrs_tbl()
	fs: dlm: fix debugfs dump
	tipc: convert dest node's address to network order
	net: stmmac: Set FIFO sizes for ipq806x
	ALSA: hdsp: don't disable if not enabled
	ALSA: hdspm: don't disable if not enabled
	ALSA: rme9652: don't disable if not enabled
	Bluetooth: Set CONF_NOT_COMPLETE as l2cap_chan default
	Bluetooth: initialize skb_queue_head at l2cap_chan_create()
	Bluetooth: check for zapped sk before connecting
	ip6_vti: proper dev_{hold|put} in ndo_[un]init methods
	mac80211: clear the beacon's CRC after channel switch
	pinctrl: samsung: use 'int' for register masks in Exynos
	cuse: prevent clone
	selftests: Set CC to clang in lib.mk if LLVM is set
	kconfig: nconf: stop endless search loops
	sctp: Fix out-of-bounds warning in sctp_process_asconf_param()
	powerpc/smp: Set numa node before updating mask
	ASoC: rt286: Generalize support for ALC3263 codec
	samples/bpf: Fix broken tracex1 due to kprobe argument change
	powerpc/pseries: Stop calling printk in rtas_stop_self()
	wl3501_cs: Fix out-of-bounds warnings in wl3501_send_pkt
	wl3501_cs: Fix out-of-bounds warnings in wl3501_mgmt_join
	powerpc/iommu: Annotate nested lock for lockdep
	net: ethernet: mtk_eth_soc: fix RX VLAN offload
	ASoC: rt286: Make RT286_SET_GPIO_* readable and writable
	f2fs: fix a redundant call to f2fs_balance_fs if an error occurs
	PCI: Release OF node in pci_scan_device()'s error path
	ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook
	rpmsg: qcom_glink_native: fix error return code of qcom_glink_rx_data()
	NFSv4.2: Always flush out writes in nfs42_proc_fallocate()
	NFS: Deal correctly with attribute generation counter overflow
	pNFS/flexfiles: fix incorrect size check in decode_nfs_fh()
	NFSv4.2 fix handling of sr_eof in SEEK's reply
	rtc: ds1307: Fix wday settings for rx8130
	sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b
	drm/radeon: Fix off-by-one power_state index heap overwrite
	khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate()
	mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts()
	ksm: fix potential missing rmap_item for stable_node
	net: fix nla_strcmp to handle more then one trailing null character
	kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
	netfilter: nftables: avoid overflows in nft_hash_buckets()
	ARC: entry: fix off-by-one error in syscall number validation
	powerpc/64s: Fix crashes when toggling stf barrier
	powerpc/64s: Fix crashes when toggling entry flush barrier
	squashfs: fix divide error in calculate_skip()
	userfaultfd: release page in error path to avoid BUG_ON
	drm/radeon/dpm: Disable sclk switching on Oland when two 4K 60Hz monitors are connected
	iio: proximity: pulsedlight: Fix rumtime PM imbalance on error
	usb: fotg210-hcd: Fix an error message
	ACPI: scan: Fix a memory leak in an error handling path
	blk-mq: Swap two calls in blk_mq_exit_queue()
	usb: dwc3: omap: improve extcon initialization
	usb: xhci: Increase timeout for HC halt
	usb: dwc2: Fix gadget DMA unmap direction
	usb: core: hub: fix race condition about TRSMRCY of resume
	iio: gyro: mpu3050: Fix reported temperature value
	iio: tsl2583: Fix division by a zero lux_val
	KVM: x86: Cancel pvclock_gtod_work on module removal
	FDDI: defxx: Make MMIO the configuration default except for EISA
	MIPS: Reinstate platform `__div64_32' handler
	MIPS: Avoid DIVU in `__div64_32' is result would be zero
	MIPS: Avoid handcoded DIVU in `__div64_32' altogether
	thermal/core/fair share: Lock the thermal zone while looping over instances
	RDMA/i40iw: Avoid panic when reading back the IRQ affinity hint
	kobject_uevent: remove warning in init_uevent_argv()
	netfilter: conntrack: Make global sysctls readonly in non-init netns
	clk: exynos7: Mark aclk_fsys1_200 as critical
	x86/msr: Fix wr/rdmsr_safe_regs_on_cpu() prototypes
	kgdb: fix gcc-11 warning on indentation
	usb: sl811-hcd: improve misleading indentation
	cxgb4: Fix the -Wmisleading-indentation warning
	isdn: capi: fix mismatched prototypes
	PCI: thunder: Fix compile testing
	ARM: 9066/1: ftrace: pause/unpause function graph tracer in cpu_suspend()
	ACPI / hotplug / PCI: Fix reference count leak in enable_slot()
	Input: elants_i2c - do not bind to i2c-hid compatible ACPI instantiated devices
	Input: silead - add workaround for x86 BIOS-es which bring the chip up in a stuck state
	um: Mark all kernel symbols as local
	ceph: fix fscache invalidation
	gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055
	ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP
	block: reexpand iov_iter after read/write
	lib: stackdepot: turn depot_lock spinlock to raw_spinlock
	serial: 8250: fix potential deadlock in rs485-mode
	sit: proper dev_{hold|put} in ndo_[un]init methods
	ip6_tunnel: sit: proper dev_{hold|put} in ndo_[un]init methods
	xhci: Do not use GFP_KERNEL in (potentially) atomic context
	ipv6: remove extra dev_hold() for fallback tunnels
	Linux 4.14.233

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I09e88e1e302d475f2a39bf88438dea30fa97c848
2021-05-22 11:25:16 +02:00
Johannes Berg
0c626de2ce um: Mark all kernel symbols as local
[ Upstream commit d5027ca63e0e778b641cf23e3f5c6d6212cf412b ]

Ritesh reported a bug [1] against UML, noting that it crashed on
startup. The backtrace shows the following (heavily redacted):

(gdb) bt
...
 #26 0x0000000060015b5d in sem_init () at ipc/sem.c:268
 #27 0x00007f89906d92f7 in ?? () from /lib/x86_64-linux-gnu/libcom_err.so.2
 #28 0x00007f8990ab8fb2 in call_init (...) at dl-init.c:72
...
 #40 0x00007f89909bf3a6 in nss_load_library (...) at nsswitch.c:359
...
 #44 0x00007f8990895e35 in _nss_compat_getgrnam_r (...) at nss_compat/compat-grp.c:486
 #45 0x00007f8990968b85 in __getgrnam_r [...]
 #46 0x00007f89909d6b77 in grantpt [...]
 #47 0x00007f8990a9394e in __GI_openpty [...]
 #48 0x00000000604a1f65 in openpty_cb (...) at arch/um/os-Linux/sigio.c:407
 #49 0x00000000604a58d0 in start_idle_thread (...) at arch/um/os-Linux/skas/process.c:598
 #50 0x0000000060004a3d in start_uml () at arch/um/kernel/skas/process.c:45
 #51 0x00000000600047b2 in linux_main (...) at arch/um/kernel/um_arch.c:334
 #52 0x000000006000574f in main (...) at arch/um/os-Linux/main.c:144

indicating that the UML function openpty_cb() calls openpty(),
which internally calls __getgrnam_r(), which causes the nsswitch
machinery to get started.

This loads, through lots of indirection that I snipped, the
libcom_err.so.2 library, which (in an unknown function, "??")
calls sem_init().

Now, of course it wants to get libpthread's sem_init(), since
it's linked against libpthread. However, the dynamic linker
looks up that symbol against the binary first, and gets the
kernel's sem_init().

Hajime Tazaki noted that "objcopy -L" can localize a symbol,
so the dynamic linker wouldn't do the lookup this way. I tried,
but for some reason that didn't seem to work.

Doing the same thing in the linker script instead does seem to
work, though I cannot entirely explain - it *also* works if I
just add "VERSION { { global: *; }; }" instead, indicating that
something else is happening that I don't really understand. It
may be that explicitly doing that marks them with some kind of
empty version, and that's different from the default.

Explicitly marking them with a version breaks kallsyms, so that
doesn't seem to be possible.

Marking all the symbols as local seems correct, and does seem
to address the issue, so do that. Also do it for static link,
nsswitch libraries could still be loaded there.

[1] https://bugs.debian.org/983379

Reported-by: Ritesh Raj Sarraf <rrs@debian.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Tested-By: Ritesh Raj Sarraf <rrs@debian.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-22 10:57:42 +02:00
Greg Kroah-Hartman
890226def6 This is the 4.14.204 stable release
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Merge 4.14.204 into android-4.14-stable

Changes in 4.14.204
	scripts/setlocalversion: make git describe output more reliable
	arm64: link with -z norelro regardless of CONFIG_RELOCATABLE
	efivarfs: Replace invalid slashes with exclamation marks in dentries.
	gtp: fix an use-before-init in gtp_newlink()
	ravb: Fix bit fields checking in ravb_hwtstamp_get()
	tipc: fix memory leak caused by tipc_buf_append()
	arch/x86/amd/ibs: Fix re-arming IBS Fetch
	x86/xen: disable Firmware First mode for correctable memory errors
	fuse: fix page dereference after free
	p54: avoid accessing the data mapped to streaming DMA
	mtd: lpddr: Fix bad logic in print_drs_error
	ata: sata_rcar: Fix DMA boundary mask
	fscrypt: return -EXDEV for incompatible rename or link into encrypted dir
	x86/unwind/orc: Fix inactive tasks with stack pointer in %sp on GCC 10 compiled kernels
	mlxsw: core: Fix use-after-free in mlxsw_emad_trans_finish()
	futex: Fix incorrect should_fail_futex() handling
	powerpc/powernv/smp: Fix spurious DBG() warning
	powerpc: select ARCH_WANT_IRQS_OFF_ACTIVATE_MM
	sparc64: remove mm_cpumask clearing to fix kthread_use_mm race
	f2fs: add trace exit in exception path
	f2fs: fix to check segment boundary during SIT page readahead
	um: change sigio_spinlock to a mutex
	ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses
	xfs: fix realtime bitmap/summary file truncation when growing rt volume
	video: fbdev: pvr2fb: initialize variables
	ath10k: start recovery process when payload length exceeds max htc length for sdio
	ath10k: fix VHT NSS calculation when STBC is enabled
	drm/brige/megachips: Add checking if ge_b850v3_lvds_init() is working correctly
	media: videodev2.h: RGB BT2020 and HSV are always full range
	media: platform: Improve queue set up flow for bug fixing
	usb: typec: tcpm: During PR_SWAP, source caps should be sent only after tSwapSourceStart
	media: tw5864: check status of tw5864_frameinterval_get
	mmc: via-sdmmc: Fix data race bug
	drm/bridge/synopsys: dsi: add support for non-continuous HS clock
	printk: reduce LOG_BUF_SHIFT range for H8300
	kgdb: Make "kgdbcon" work properly with "kgdb_earlycon"
	cpufreq: sti-cpufreq: add stih418 support
	USB: adutux: fix debugging
	uio: free uio id after uio file node is freed
	arm64/mm: return cpu_all_mask when node is NUMA_NO_NODE
	ACPI: Add out of bounds and numa_off protections to pxm_to_node()
	drivers/net/wan/hdlc_fr: Correctly handle special skb->protocol values
	bus/fsl_mc: Do not rely on caller to provide non NULL mc_io
	power: supply: test_power: add missing newlines when printing parameters by sysfs
	md/bitmap: md_bitmap_get_counter returns wrong blocks
	bnxt_en: Log unknown link speed appropriately.
	clk: ti: clockdomain: fix static checker warning
	net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
	drivers: watchdog: rdc321x_wdt: Fix race condition bugs
	ext4: Detect already used quota file early
	gfs2: add validation checks for size of superblock
	arm64: dts: renesas: ulcb: add full-pwr-cycle-in-suspend into eMMC nodes
	memory: emif: Remove bogus debugfs error handling
	ARM: dts: s5pv210: remove DMA controller bus node name to fix dtschema warnings
	ARM: dts: s5pv210: move PMU node out of clock controller
	ARM: dts: s5pv210: remove dedicated 'audio-subsystem' node
	nbd: make the config put is called before the notifying the waiter
	sgl_alloc_order: fix memory leak
	nvme-rdma: fix crash when connect rejected
	md/raid5: fix oops during stripe resizing
	perf/x86/amd/ibs: Don't include randomized bits in get_ibs_op_count()
	perf/x86/amd/ibs: Fix raw sample data accumulation
	leds: bcm6328, bcm6358: use devres LED registering function
	fs: Don't invalidate page buffers in block_write_full_page()
	NFS: fix nfs_path in case of a rename retry
	ACPI / extlog: Check for RDMSR failure
	ACPI: video: use ACPI backlight for HP 635 Notebook
	ACPI: debug: don't allow debugging when ACPI is disabled
	acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
	w1: mxc_w1: Fix timeout resolution problem leading to bus error
	scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()
	btrfs: reschedule if necessary when logging directory items
	btrfs: send, recompute reference path after orphanization of a directory
	btrfs: use kvzalloc() to allocate clone_roots in btrfs_ioctl_send()
	btrfs: cleanup cow block on error
	btrfs: fix use-after-free on readahead extent after failure to create it
	usb: dwc3: ep0: Fix ZLP for OUT ep0 requests
	usb: dwc3: core: add phy cleanup for probe error handling
	usb: dwc3: core: don't trigger runtime pm when remove driver
	usb: cdc-acm: fix cooldown mechanism
	usb: host: fsl-mph-dr-of: check return of dma_set_mask()
	drm/i915: Force VT'd workarounds when running as a guest OS
	vt: keyboard, simplify vt_kdgkbsent
	vt: keyboard, extend func_buf_lock to readers
	dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status
	iio:light:si1145: Fix timestamp alignment and prevent data leak.
	iio:adc:ti-adc0832 Fix alignment issue with timestamp
	iio:adc:ti-adc12138 Fix alignment issue with timestamp
	iio:gyro:itg3200: Fix timestamp alignment and prevent data leak.
	s390/stp: add locking to sysfs functions
	powerpc/rtas: Restrict RTAS requests from userspace
	powerpc: Warn about use of smt_snooze_delay
	powerpc/powernv/elog: Fix race while processing OPAL error log event.
	NFSv4.2: support EXCHGID4_FLAG_SUPP_FENCE_OPS 4.2 EXCHANGE_ID flag
	NFSD: Add missing NFSv2 .pc_func methods
	ubifs: dent: Fix some potential memory leaks while iterating entries
	perf python scripting: Fix printable strings in python3 scripts
	ubi: check kthread_should_stop() after the setting of task state
	ia64: fix build error with !COREDUMP
	drm/amdgpu: don't map BO in reserved region
	ceph: promote to unsigned long long before shifting
	libceph: clear con->out_msg on Policy::stateful_server faults
	9P: Cast to loff_t before multiplying
	ring-buffer: Return 0 on success from ring_buffer_resize()
	vringh: fix __vringh_iov() when riov and wiov are different
	ext4: fix leaking sysfs kobject after failed mount
	ext4: fix error handling code in add_new_gdb
	ext4: fix invalid inode checksum
	drm/ttm: fix eviction valuable range check.
	rtc: rx8010: don't modify the global rtc ops
	tty: make FONTX ioctl use the tty pointer they were actually passed
	arm64: berlin: Select DW_APB_TIMER_OF
	cachefiles: Handle readpage error correctly
	hil/parisc: Disable HIL driver when it gets stuck
	arm: dts: mt7623: add missing pause for switchport
	ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
	ARM: s3c24xx: fix missing system reset
	device property: Keep secondary firmware node secondary by type
	device property: Don't clear secondary pointer for shared primary firmware node
	KVM: arm64: Fix AArch32 handling of DBGD{CCINT,SCRext} and DBGVCR
	staging: comedi: cb_pcidas: Allow 2-channel commands for AO subdevice
	staging: octeon: repair "fixed-link" support
	staging: octeon: Drop on uncorrectable alignment or FCS error
	Linux 4.14.204

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ibed153216ddb983a9ef0640ae9c82781f51880fe
2020-11-05 13:16:23 +01:00
Johannes Berg
9368f119e8 um: change sigio_spinlock to a mutex
[ Upstream commit f2d05059e15af3f70502074f4e3a504530af504a ]

Lockdep complains at boot:

=============================
[ BUG: Invalid wait context ]
5.7.0-05093-g46d91ecd597b #98 Not tainted
-----------------------------
swapper/1 is trying to lock:
0000000060931b98 (&desc[i].request_mutex){+.+.}-{3:3}, at: __setup_irq+0x11d/0x623
other info that might help us debug this:
context-{4:4}
1 lock held by swapper/1:
 #0: 000000006074fed8 (sigio_spinlock){+.+.}-{2:2}, at: sigio_lock+0x1a/0x1c
stack backtrace:
CPU: 0 PID: 1 Comm: swapper Not tainted 5.7.0-05093-g46d91ecd597b #98
Stack:
 7fa4fab0 6028dfd1 0000002a 6008bea5
 7fa50700 7fa50040 7fa4fac0 6028e016
 7fa4fb50 6007f6da 60959c18 00000000
Call Trace:
 [<60023a0e>] show_stack+0x13b/0x155
 [<6028e016>] dump_stack+0x2a/0x2c
 [<6007f6da>] __lock_acquire+0x515/0x15f2
 [<6007eb50>] lock_acquire+0x245/0x273
 [<6050d9f1>] __mutex_lock+0xbd/0x325
 [<6050dc76>] mutex_lock_nested+0x1d/0x1f
 [<6008e27e>] __setup_irq+0x11d/0x623
 [<6008e8ed>] request_threaded_irq+0x169/0x1a6
 [<60021eb0>] um_request_irq+0x1ee/0x24b
 [<600234ee>] write_sigio_irq+0x3b/0x76
 [<600383ca>] sigio_broken+0x146/0x2e4
 [<60020bd8>] do_one_initcall+0xde/0x281

Because we hold sigio_spinlock and then get into requesting
an interrupt with a mutex.

Change the spinlock to a mutex to avoid that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-11-05 11:06:53 +01:00
Greg Kroah-Hartman
cfee25d274 This is the 4.14.126 stable release
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Merge 4.14.126 into android-4.14

Changes in 4.14.126
	rapidio: fix a NULL pointer dereference when create_workqueue() fails
	fs/fat/file.c: issue flush after the writeback of FAT
	sysctl: return -EINVAL if val violates minmax
	ipc: prevent lockup on alloc_msg and free_msg
	ARM: prevent tracing IPI_CPU_BACKTRACE
	mm/hmm: select mmu notifier when selecting HMM
	hugetlbfs: on restore reserve error path retain subpool reservation
	mem-hotplug: fix node spanned pages when we have a node with only ZONE_MOVABLE
	mm/cma.c: fix crash on CMA allocation if bitmap allocation fails
	mm/cma.c: fix the bitmap status to show failed allocation reason
	mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
	mm/slab.c: fix an infinite loop in leaks_show()
	kernel/sys.c: prctl: fix false positive in validate_prctl_map()
	thermal: rcar_gen3_thermal: disable interrupt in .remove
	drivers: thermal: tsens: Don't print error message on -EPROBE_DEFER
	mfd: tps65912-spi: Add missing of table registration
	mfd: intel-lpss: Set the device in reset state when init
	drm/nouveau/disp/dp: respect sink limits when selecting failsafe link configuration
	mfd: twl6040: Fix device init errors for ACCCTL register
	perf/x86/intel: Allow PEBS multi-entry in watermark mode
	drm/bridge: adv7511: Fix low refresh rate selection
	objtool: Don't use ignore flag for fake jumps
	EDAC/mpc85xx: Prevent building as a module
	pwm: meson: Use the spin-lock only to protect register modifications
	ntp: Allow TAI-UTC offset to be set to zero
	f2fs: fix to avoid panic in do_recover_data()
	f2fs: fix to clear dirty inode in error path of f2fs_iget()
	f2fs: fix to avoid panic in dec_valid_block_count()
	f2fs: fix to do sanity check on valid block count of segment
	percpu: remove spurious lock dependency between percpu and sched
	configfs: fix possible use-after-free in configfs_register_group
	uml: fix a boot splat wrt use of cpu_all_mask
	mmc: mmci: Prevent polling for busy detection in IRQ context
	watchdog: imx2_wdt: Fix set_timeout for big timeout values
	watchdog: fix compile time error of pretimeout governors
	blk-mq: move cancel of requeue_work into blk_mq_release
	iommu/vt-d: Set intel_iommu_gfx_mapped correctly
	misc: pci_endpoint_test: Fix test_reg_bar to be updated in pci_endpoint_test
	nvme-pci: unquiesce admin queue on shutdown
	ALSA: hda - Register irq handler after the chip initialization
	nvmem: core: fix read buffer in place
	fuse: retrieve: cap requested size to negotiated max_write
	nfsd: allow fh_want_write to be called twice
	vfio: Fix WARNING "do not call blocking ops when !TASK_RUNNING"
	x86/PCI: Fix PCI IRQ routing table memory leak
	platform/chrome: cros_ec_proto: check for NULL transfer function
	PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64
	soc: mediatek: pwrap: Zero initialize rdata in pwrap_init_cipher
	clk: rockchip: Turn on "aclk_dmac1" for suspend on rk3288
	soc: rockchip: Set the proper PWM for rk3288
	ARM: dts: imx51: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
	ARM: dts: imx50: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
	ARM: dts: imx53: Specify IMX5_CLK_IPG as "ahb" clock to SDMA
	ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ahb" clock to SDMA
	ARM: dts: imx7d: Specify IMX7D_CLK_IPG as "ipg" clock to SDMA
	ARM: dts: imx6ul: Specify IMX6UL_CLK_IPG as "ipg" clock to SDMA
	ARM: dts: imx6sx: Specify IMX6SX_CLK_IPG as "ipg" clock to SDMA
	ARM: dts: imx6qdl: Specify IMX6QDL_CLK_IPG as "ipg" clock to SDMA
	PCI: rpadlpar: Fix leaked device_node references in add/remove paths
	platform/x86: intel_pmc_ipc: adding error handling
	power: supply: max14656: fix potential use-before-alloc
	PCI: rcar: Fix a potential NULL pointer dereference
	PCI: rcar: Fix 64bit MSI message address handling
	video: hgafb: fix potential NULL pointer dereference
	video: imsttfb: fix potential NULL pointer dereferences
	block, bfq: increase idling for weight-raised queues
	PCI: xilinx: Check for __get_free_pages() failure
	gpio: gpio-omap: add check for off wake capable gpios
	dmaengine: idma64: Use actual device for DMA transfers
	pwm: tiehrpwm: Update shadow register for disabling PWMs
	ARM: dts: exynos: Always enable necessary APIO_1V8 and ABB_1V8 regulators on Arndale Octa
	pwm: Fix deadlock warning when removing PWM device
	ARM: exynos: Fix undefined instruction during Exynos5422 resume
	usb: typec: fusb302: Check vconn is off when we start toggling
	gpio: vf610: Do not share irq_chip
	percpu: do not search past bitmap when allocating an area
	Revert "Bluetooth: Align minimum encryption key size for LE and BR/EDR connections"
	Revert "drm/nouveau: add kconfig option to turn off nouveau legacy contexts. (v3)"
	drm: don't block fb changes for async plane updates
	ALSA: seq: Cover unsubscribe_port() in list_mutex
	Linux 4.14.126

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-06-15 15:56:56 +02:00
Maciej Żenczykowski
c752badd81 uml: fix a boot splat wrt use of cpu_all_mask
[ Upstream commit 689a58605b63173acb0a8cf954af6a8f60440c93 ]

Memory: 509108K/542612K available (3835K kernel code, 919K rwdata, 1028K rodata, 129K init, 211K bss, 33504K reserved, 0K cma-reserved)
NR_IRQS: 15
clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/time/clockevents.c:458 clockevents_register_device+0x72/0x140
posix-timer cpumask == cpu_all_mask, using cpu_possible_mask instead
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 5.1.0-rc4-00048-ged79cc87302b #4
Stack:
 604ebda0 603c5370 604ebe20 6046fd17
 00000000 6006fcbb 604ebdb0 603c53b5
 604ebe10 6003bfc4 604ebdd0 9000001ca
Call Trace:
 [<6006fcbb>] ? printk+0x0/0x94
 [<60083160>] ? clockevents_register_device+0x72/0x140
 [<6001f16e>] show_stack+0x13b/0x155
 [<603c5370>] ? dump_stack_print_info+0xe2/0xeb
 [<6006fcbb>] ? printk+0x0/0x94
 [<603c53b5>] dump_stack+0x2a/0x2c
 [<6003bfc4>] __warn+0x10e/0x13e
 [<60070320>] ? vprintk_func+0xc8/0xcf
 [<60030fd6>] ? block_signals+0x0/0x16
 [<6006fcbb>] ? printk+0x0/0x94
 [<6003c08b>] warn_slowpath_fmt+0x97/0x99
 [<600311a1>] ? set_signals+0x0/0x3f
 [<6003bff4>] ? warn_slowpath_fmt+0x0/0x99
 [<600842cb>] ? tick_oneshot_mode_active+0x44/0x4f
 [<60030fd6>] ? block_signals+0x0/0x16
 [<6006fcbb>] ? printk+0x0/0x94
 [<6007d2d5>] ? __clocksource_select+0x20/0x1b1
 [<60030fd6>] ? block_signals+0x0/0x16
 [<6006fcbb>] ? printk+0x0/0x94
 [<60083160>] clockevents_register_device+0x72/0x140
 [<60031192>] ? get_signals+0x0/0xf
 [<60030fd6>] ? block_signals+0x0/0x16
 [<6006fcbb>] ? printk+0x0/0x94
 [<60002eec>] um_timer_setup+0xc8/0xca
 [<60001b59>] start_kernel+0x47f/0x57e
 [<600035bc>] start_kernel_proc+0x49/0x4d
 [<6006c483>] ? kmsg_dump_register+0x82/0x8a
 [<6001de62>] new_thread_handler+0x81/0xb2
 [<60003571>] ? kmsg_dumper_stdout_init+0x1a/0x1c
 [<60020c75>] uml_finishsetup+0x54/0x59

random: get_random_bytes called from init_oops_id+0x27/0x34 with crng_init=0
---[ end trace 00173d0117a88acb ]---
Calibrating delay loop... 6941.90 BogoMIPS (lpj=34709504)

Signed-off-by: Maciej Żenczykowski <maze@google.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: linux-um@lists.infradead.org
Cc: linux-kernel@vger.kernel.org

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-06-15 11:54:53 +02:00
Kees Cook
47e67b43c2 UPSTREAM: Do not hash userspace addresses in fault handlers
The hashing of %p was designed to restrict kernel addresses. There is
no reason to hash the userspace values seen during a segfault report,
so switch these to %px. (Some architectures already use %lx.)

Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 10a7e9d849150a2879efc0b04d8a51068c9dd0c5)
Signed-off-by: Sandeep Patil <sspatil@android.com>

Bug: 78533979
Test: Build and boot cuttlefish
Change-Id: Ibd04bf839ec7c86884ad2366324bf9cd69d05f34
2019-03-28 21:16:19 -07:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Thomas Gleixner
69b73e9598 um/time: Fixup namespace collision
The new timer_setup() function for struct timer_list collides with a
private um function. Rename it.

Fixes: 686fef928bba ("timer: Prepare to change timer callback argument type")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Weinberger <richard@nod.at>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: Kees Cook  <keescook@chromium.org>
2017-09-29 10:07:44 +02:00
Thomas Meyer
d3488649dc um: Fix CONFIG_GCOV for modules.
Explicitly export symbols so modpost doesn't complain.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:33:54 +02:00
Thomas Meyer
6f602afda7 um: Fix FP register size for XSTATE/XSAVE
Hard code max size. Taken from
https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=gdb/common/x86-xstate.h

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-09-13 22:24:38 +02:00
Linus Torvalds
4ecd4ff55a Merge branch 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger:
 "Mostly fixes for UML:

   - First round of fixes for PTRACE_GETRESET/SETREGSET

   - A printf vs printk cleanup

   - Minor improvements"

* 'for-linus-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Correctly check for PTRACE_GETRESET/SETREGSET
  um: v2: Use generic NOTES macro
  um: Add kerneldoc for userspace_tramp() and start_userspace()
  um: Add kerneldoc for segv_handler
  um: stub-data.h: remove superfluous include
  um: userspace - be more verbose in ptrace set regs error
  um: add dummy ioremap and iounmap functions
  um: Allow building and running on older hosts
  um: Avoid longjmp/setjmp symbol clashes with libpthread.a
  um: console: Ignore console= option
  um: Use os_warn to print out pre-boot warning/error messages
  um: Add os_warn() for pre-boot warning/error messages
  um: Use os_info for the messages on normal path
  um: Add os_info() for pre-boot information messages
  um: Use printk instead of printf in make_uml_dir
2017-07-15 10:49:33 -07:00
Thomas Meyer
88af23381a um: Add kerneldoc for segv_handler
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-07-07 10:53:38 +02:00
Linus Torvalds
dc502142b6 Merge branch 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull user access str* updates from Al Viro:
 "uaccess str...() dead code removal"

* 'uaccess.strlen' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  s390 keyboard.c: don't open-code strndup_user()
  mips: get rid of unused __strnlen_user()
  get rid of unused __strncpy_from_user() instances
  kill strlen_user()
2017-07-06 22:07:44 -07:00
Masami Hiramatsu
0936d4f3d5 um: Use os_warn to print out pre-boot warning/error messages
Use os_warn() instead of printf/fprintf to print out
pre-boot warning/error messages to stderr.
Note that the help message and version message are
kept to print out to stdout, because user explicitly
specifies those options to get such information.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-07-05 23:18:25 +02:00
Masami Hiramatsu
d3878bb800 um: Use os_info for the messages on normal path
Use os_info() for printing out the messages on the
normal execution path.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-07-05 23:17:42 +02:00
Tobias Klauser
6474924e2b arch: remove unused macro/function thread_saved_pc()
The only user of thread_saved_pc() in non-arch-specific code was removed
in commit 8243d5597793 ("sched/core: Remove pointless printout in
sched_show_task()").  Remove the implementations as well.

Some architectures use thread_saved_pc() in their arch-specific code.
Leave their thread_saved_pc() intact.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-06-28 16:13:57 -07:00
Al Viro
8298525839 kill strlen_user()
no callers, no consistent semantics, no sane way to use it...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-05-15 23:40:22 -04:00
Linus Torvalds
ec059019b7 Merge branch 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML fixes from Richard Weinberger:
 "No new stuff, just fixes"

* 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Add missing NR_CPUS include
  um: Fix to call read_initrd after init_bootmem
  um: Include kbuild.h instead of duplicating its macros
  um: Fix PTRACE_POKEUSER on x86_64
  um: Set number of CPUs
  um: Fix _print_addr()
2017-05-13 10:20:02 -07:00
Masami Hiramatsu
5b4236e17c um: Fix to call read_initrd after init_bootmem
Since read_initrd() invokes alloc_bootmem() for allocating
memory to load initrd image, it must be called after init_bootmem.

This makes read_initrd() called directly from setup_arch()
after init_bootmem() and mem_total_pages().

Cc: <stable@vger.kernel.org>
Fixes: b63236972e1 ("um: Setup physical memory in setup_arch()")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-05-03 22:38:16 +02:00
Richard Weinberger
ecb6c7435f um: Fix _print_addr()
Recent changes to printk() broke UML's stack trace
output. Kill the root of the problem by using a single
printk() statement.

Signed-off-by: Richard Weinberger <richard@nod.at>
2017-05-03 22:30:20 +02:00
Linus Torvalds
174ddfd5df Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
 "The timer departement delivers:

   - more year 2038 rework

   - a massive rework of the arm achitected timer

   - preparatory patches to allow NTP correction of clock event devices
     to avoid early expiry

   - the usual pile of fixes and enhancements all over the place"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (91 commits)
  timer/sysclt: Restrict timer migration sysctl values to 0 and 1
  arm64/arch_timer: Mark errata handlers as __maybe_unused
  Clocksource/mips-gic: Remove redundant non devicetree init
  MIPS/Malta: Probe gic-timer via devicetree
  clocksource: Use GENMASK_ULL in definition of CLOCKSOURCE_MASK
  acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver
  clocksource: arm_arch_timer: add GTDT support for memory-mapped timer
  acpi/arm64: Add memory-mapped timer support in GTDT driver
  clocksource: arm_arch_timer: simplify ACPI support code.
  acpi/arm64: Add GTDT table parse driver
  clocksource: arm_arch_timer: split MMIO timer probing.
  clocksource: arm_arch_timer: add structs to describe MMIO timer
  clocksource: arm_arch_timer: move arch_timer_needs_of_probing into DT init call
  clocksource: arm_arch_timer: refactor arch_timer_needs_probing
  clocksource: arm_arch_timer: split dt-only rate handling
  x86/uv/time: Set ->min_delta_ticks and ->max_delta_ticks
  unicore32/time: Set ->min_delta_ticks and ->max_delta_ticks
  um/time: Set ->min_delta_ticks and ->max_delta_ticks
  tile/time: Set ->min_delta_ticks and ->max_delta_ticks
  score/time: Set ->min_delta_ticks and ->max_delta_ticks
  ...
2017-05-01 16:15:18 -07:00
Nicolai Stange
8ab3a284a6 um/time: Set ->min_delta_ticks and ->max_delta_ticks
In preparation for making the clockevents core NTP correction aware,
all clockevent device drivers must set ->min_delta_ticks and
->max_delta_ticks rather than ->min_delta_ns and ->max_delta_ns: a
clockevent device's rate is going to change dynamically and thus, the
ratio of ns to ticks ceases to stay invariant.

Make the uml arch's clockevent driver initialize these fields properly.

This patch alone doesn't introduce any change in functionality as the
clockevents core still looks exclusively at the (untouched) ->min_delta_ns
and ->max_delta_ns. As soon as this has changed, a followup patch will
purge the initialization of ->min_delta_ns and ->max_delta_ns from this
driver.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2017-04-14 13:11:22 -07:00
Al Viro
a668ce3a00 um: switch to RAW_COPY_USER
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-03-28 18:24:03 -04:00
Al Viro
db68ce10c4 new helper: uaccess_kernel()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-03-28 16:43:25 -04:00
Ingo Molnar
3f8c24529b sched/headers: Prepare to move kstack_end() from <linux/sched.h> to <linux/sched/task_stack.h>
But first update the usage sites with the new header dependency.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:39 +01:00
Ingo Molnar
9164bb4a18 sched/headers: Prepare to move 'init_task' and 'init_thread_union' from <linux/sched.h> to <linux/sched/task.h>
Update all usage sites first.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:38 +01:00
Ingo Molnar
589ee62844 sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>
Update code that relied on sched.h including various MM types for them.

This will allow us to remove the <linux/mm_types.h> include from <linux/sched.h>.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:37 +01:00
Ingo Molnar
68db0cf106 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
We are going to split <linux/sched/task_stack.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/task_stack.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:36 +01:00
Ingo Molnar
299300258d sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task.h>
We are going to split <linux/sched/task.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/task.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:35 +01:00
Ingo Molnar
b17b01533b sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h>
We are going to split <linux/sched/debug.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/debug.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:34 +01:00
Ingo Molnar
3f07c01441 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h>
We are going to split <linux/sched/signal.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder <linux/sched/signal.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:29 +01:00
Thomas Gleixner
a5a1d1c291 clocksource: Use a plain u64 instead of cycle_t
There is no point in having an extra type for extra confusion. u64 is
unambiguous.

Conversion was done with the following coccinelle script:

@rem@
@@
-typedef u64 cycle_t;

@fix@
typedef cycle_t;
@@
-cycle_t
+u64

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
2016-12-25 11:04:12 +01:00
Linus Torvalds
7c0f6ba682 Replace <asm/uaccess.h> with <linux/uaccess.h> globally
This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*<asm/uaccess.h>'
  sed -i -e "s!$PATT!#include <linux/uaccess.h>!" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-24 11:46:01 -08:00
Chris Metcalf
6727ad9e20 nmi_backtrace: generate one-line reports for idle cpus
When doing an nmi backtrace of many cores, most of which are idle, the
output is a little overwhelming and very uninformative.  Suppress
messages for cpus that are idling when they are interrupted and just
emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN".

We do this by grouping all the cpuidle code together into a new
.cpuidle.text section, and then checking the address of the interrupted
PC to see if it lies within that section.

This commit suitably tags x86 and tile idle routines, and only adds in
the minimal framework for other architectures.

Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Tested-by: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-07 18:46:30 -07:00
Mickaël Salaün
ce29856a5e um/ptrace: Fix the syscall number update after a ptrace
Update the syscall number after each PTRACE_SETREGS on ORIG_*AX.

This is needed to get the potentially altered syscall number in the
seccomp filters after RET_TRACE.

This fix four seccomp_bpf tests:
> [ RUN      ] TRACE_syscall.skip_after_RET_TRACE
> seccomp_bpf.c:1560:TRACE_syscall.skip_after_RET_TRACE:Expected -1 (18446744073709551615) == syscall(39) (26)
> seccomp_bpf.c:1561:TRACE_syscall.skip_after_RET_TRACE:Expected 1 (1) == (*__errno_location ()) (22)
> [     FAIL ] TRACE_syscall.skip_after_RET_TRACE
> [ RUN      ] TRACE_syscall.kill_after_RET_TRACE
> TRACE_syscall.kill_after_RET_TRACE: Test exited normally instead of by signal (code: 1)
> [     FAIL ] TRACE_syscall.kill_after_RET_TRACE
> [ RUN      ] TRACE_syscall.skip_after_ptrace
> seccomp_bpf.c:1622:TRACE_syscall.skip_after_ptrace:Expected -1 (18446744073709551615) == syscall(39) (26)
> seccomp_bpf.c:1623:TRACE_syscall.skip_after_ptrace:Expected 1 (1) == (*__errno_location ()) (22)
> [     FAIL ] TRACE_syscall.skip_after_ptrace
> [ RUN      ] TRACE_syscall.kill_after_ptrace
> TRACE_syscall.kill_after_ptrace: Test exited normally instead of by signal (code: 1)
> [     FAIL ] TRACE_syscall.kill_after_ptrace

Fixes: 26703c636c1f ("um/ptrace: run seccomp after ptrace")

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: James Morris <jmorris@namei.org>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-09-07 09:25:04 -07:00
Mickaël Salaün
972939e285 um/ptrace: Fix the syscall_trace_leave call
Keep the same semantic as before the commit 26703c636c1f: deallocate
audit context and fake a proper syscall exit.

This fix a kernel panic triggered by the seccomp_bpf test:
> [ RUN      ] global.ERRNO_valid
> BUG: failure at kernel/auditsc.c:1504/__audit_syscall_entry()!
> Kernel panic - not syncing: BUG!

Fixes: 26703c636c1f ("um/ptrace: run seccomp after ptrace")

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: James Morris <jmorris@namei.org>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-09-07 09:25:04 -07:00
Linus Torvalds
9e0243db61 Merge branch 'for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger:
 "Beside of various fixes this also contains patches to enable features
  such was Kcov, kmemleak and TRACE_IRQFLAGS_SUPPORT on UML"

* 'for-linus-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
  um: Support kcov
  um: Enable TRACE_IRQFLAGS_SUPPORT
  um: Use asm-generic/irqflags.h
  um: Fix possible deadlock in sig_handler_common()
  um: Select HAVE_DEBUG_KMEMLEAK
  um: Setup physical memory in setup_arch()
  um: Eliminate null test after alloc_bootmem
2016-08-04 19:37:59 -04:00
Vegard Nossum
915eed20e4 um: Support kcov
This adds support for kcov to UML.

There is a small problem where UML will randomly segfault during boot;
this is because current_thread_info() occasionally returns an invalid
(non-NULL) pointer and we try to dereference it in
__sanitizer_cov_trace_pc(). I consider this a bug in UML itself and this
patch merely exposes it.

[v2: disable instrumentation in UML-specific code]

Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: user-mode-linux-devel <user-mode-linux-devel@lists.sourceforge.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-04 00:18:06 +02:00
Richard Weinberger
b63236972e um: Setup physical memory in setup_arch()
Currently UML sets up physical memory very early,
long before setup_arch() was called by the kernel main
function.
This can cause problems when code paths in UML's memory setup
code assume that the kernel is already running.
i.e. when kmemleak is enabled it will evaluate current()
in free_bootmem(). That early current() is undefined and
UML explodes.

Solve the problem by setting up physical memory in setup_arch(),
at this stage the kernel has materialized and basic infrastructure
such as current() works.

Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-04 00:00:46 +02:00
Amitoj Kaur Chawla
fed4c72689 um: Eliminate null test after alloc_bootmem
alloc_bootmem function never returns NULL. Thus a NULL test after a
call to this function is unnecessary.

The Coccinelle semantic patch used to make this change is follows:
@@
expression E;
statement S;
@@

E =
alloc_bootmem(...)
... when != E
- if (E == NULL) S

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2016-08-04 00:00:06 +02:00
Linus Torvalds
7a1e8b80fb Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
 "Highlights:

   - TPM core and driver updates/fixes
   - IPv6 security labeling (CALIPSO)
   - Lots of Apparmor fixes
   - Seccomp: remove 2-phase API, close hole where ptrace can change
     syscall #"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits)
  apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling
  tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family)
  tpm: Factor out common startup code
  tpm: use devm_add_action_or_reset
  tpm2_i2c_nuvoton: add irq validity check
  tpm: read burstcount from TPM_STS in one 32-bit transaction
  tpm: fix byte-order for the value read by tpm2_get_tpm_pt
  tpm_tis_core: convert max timeouts from msec to jiffies
  apparmor: fix arg_size computation for when setprocattr is null terminated
  apparmor: fix oops, validate buffer size in apparmor_setprocattr()
  apparmor: do not expose kernel stack
  apparmor: fix module parameters can be changed after policy is locked
  apparmor: fix oops in profile_unpack() when policy_db is not present
  apparmor: don't check for vmalloc_addr if kvzalloc() failed
  apparmor: add missing id bounds check on dfa verification
  apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task
  apparmor: use list_next_entry instead of list_entry_next
  apparmor: fix refcount race when finding a child profile
  apparmor: fix ref count leak when profile sha1 hash is read
  apparmor: check that xindex is in trans_table bounds
  ...
2016-07-29 17:38:46 -07:00
Kirill A. Shutemov
dcddffd41d mm: do not pass mm_struct into handle_mm_fault
We always have vma->vm_mm around.

Link: http://lkml.kernel.org/r/1466021202-61880-8-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-26 16:19:19 -07:00
Michal Hocko
32d6bd9059 tree wide: get rid of __GFP_REPEAT for order-0 allocations part I
This is the third version of the patchset previously sent [1].  I have
basically only rebased it on top of 4.7-rc1 tree and dropped "dm: get
rid of superfluous gfp flags" which went through dm tree.  I am sending
it now because it is tree wide and chances for conflicts are reduced
considerably when we want to target rc2.  I plan to send the next step
and rename the flag and move to a better semantic later during this
release cycle so we will have a new semantic ready for 4.8 merge window
hopefully.

Motivation:

While working on something unrelated I've checked the current usage of
__GFP_REPEAT in the tree.  It seems that a majority of the usage is and
always has been bogus because __GFP_REPEAT has always been about costly
high order allocations while we are using it for order-0 or very small
orders very often.  It seems that a big pile of them is just a
copy&paste when a code has been adopted from one arch to another.

I think it makes some sense to get rid of them because they are just
making the semantic more unclear.  Please note that GFP_REPEAT is
documented as

* __GFP_REPEAT: Try hard to allocate the memory, but the allocation attempt

* _might_ fail.  This depends upon the particular VM implementation.
  while !costly requests have basically nofail semantic.  So one could
  reasonably expect that order-0 request with __GFP_REPEAT will not loop
  for ever.  This is not implemented right now though.

I would like to move on with __GFP_REPEAT and define a better semantic
for it.

  $ git grep __GFP_REPEAT origin/master | wc -l
  111
  $ git grep __GFP_REPEAT | wc -l
  36

So we are down to the third after this patch series.  The remaining
places really seem to be relying on __GFP_REPEAT due to large allocation
requests.  This still needs some double checking which I will do later
after all the simple ones are sorted out.

I am touching a lot of arch specific code here and I hope I got it right
but as a matter of fact I even didn't compile test for some archs as I
do not have cross compiler for them.  Patches should be quite trivial to
review for stupid compile mistakes though.  The tricky parts are usually
hidden by macro definitions and thats where I would appreciate help from
arch maintainers.

[1] http://lkml.kernel.org/r/1461849846-27209-1-git-send-email-mhocko@kernel.org

This patch (of 19):

__GFP_REPEAT has a rather weak semantic but since it has been introduced
around 2.6.12 it has been ignored for low order allocations.  Yet we
have the full kernel tree with its usage for apparently order-0
allocations.  This is really confusing because __GFP_REPEAT is
explicitly documented to allow allocation failures which is a weaker
semantic than the current order-0 has (basically nofail).

Let's simply drop __GFP_REPEAT from those places.  This would allow to
identify place which really need allocator to retry harder and formulate
a more specific semantic for what the flag is supposed to do actually.

Link: http://lkml.kernel.org/r/1464599699-30131-2-git-send-email-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chen Liqin <liqin.linux@gmail.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com> [for tile]
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: John Crispin <blogic@openwrt.org>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-06-24 17:23:52 -07:00