malhuda/msm-4.14
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msm-4.14/kernel
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Martin KaFai Lau 937e41cb2e bpf: btf: Avoid WARN_ON when CONFIG_REFCOUNT_FULL=y 
If CONFIG_REFCOUNT_FULL=y, refcount_inc() WARN when refcount is 0.
When creating a new btf, the initial btf->refcnt is 0 and
triggered the following:

[   34.855452] refcount_t: increment on 0; use-after-free.
[   34.856252] WARNING: CPU: 6 PID: 1857 at lib/refcount.c:153 refcount_inc+0x26/0x30
....
[   34.868809] Call Trace:
[   34.869168]  btf_new_fd+0x1af6/0x24d0
[   34.869645]  ? btf_type_seq_show+0x200/0x200
[   34.870212]  ? lock_acquire+0x3b0/0x3b0
[   34.870726]  ? security_capable+0x54/0x90
[   34.871247]  __x64_sys_bpf+0x1b2/0x310
[   34.871761]  ? __ia32_sys_bpf+0x310/0x310
[   34.872285]  ? bad_area_access_error+0x310/0x310
[   34.872894]  do_syscall_64+0x95/0x3f0

This patch uses refcount_set() instead.

Reported-by: Yonghong Song <yhs@fb.com>
Tested-by: Yonghong Song <yhs@fb.com>
Change-Id: I61918a383eb08dd8fb9320dadd1f0e616f68af1b
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Cyber Knight <cyberknight755@gmail.com>
2025-01-13 14:37:38 -03:00
..
bpf
bpf: btf: Avoid WARN_ON when CONFIG_REFCOUNT_FULL=y
2025-01-13 14:37:38 -03:00
cgroup
cgroup: Boost whenever a zygote-forked process becomes a top app
2024-12-23 00:59:42 -03:00
configs
Merge android-4.14 (e709f59) into msm-4.14
2019-04-03 06:59:52 -07:00
debug
This is the 4.14.353 OpenELA-Extended LTS stable release
2024-10-11 00:50:20 -03:00
events
This is the 4.14.355 OpenELA-Extended LTS stable release
2024-10-31 20:49:41 -03:00
gcov
Merge branch 'linux-4.14.y' of https://github.com/openela/kernel-lts
2024-08-16 22:07:21 -03:00
irq
Revert "genirq/irqdomain: Don't try to free an interrupt that has no mapping"
2024-12-24 00:01:56 -03:00
livepatch
Merge branch 'android-4.14-stable' of https://android.googlesource.com/kernel/common
2023-12-07 20:15:44 -03:00
locking
This is the 4.14.355 OpenELA-Extended LTS stable release
2024-10-31 20:49:41 -03:00
power
power: swap: Use copy_page for full page copy
2024-11-20 02:27:51 -03:00
printk
This is the 4.14.354 OpenELA-Extended LTS stable release
2024-10-29 20:17:04 -03:00
rcu
msm-4.14: Drop perf-critical API
2024-12-23 00:53:44 -03:00
sched
sched/features: Disable LB_BIAS by default
2024-12-23 00:58:50 -03:00
time
time: Move frequently used functions to headers and declare them inline
2024-12-13 00:13:33 -03:00
trace
This is the 4.14.355 OpenELA-Extended LTS stable release
2024-10-31 20:49:41 -03:00
.gitignore
BACKPORT: Provide in-kernel headers to make extending kernel easier
2019-06-12 12:34:50 +00:00
acct.c
acct: fix potential integer overflow in encode_comp_t()
2023-01-18 09:26:30 +01:00
async.c
treewide: Remove uninitialized_var() usage
2023-08-11 11:33:32 +02:00
audit_fsnotify.c
audit: fix potential double free on error path from fsnotify_add_inode_mark
2022-09-05 10:25:02 +02:00
audit_tree.c
…
audit_watch.c
audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare()
2023-11-28 16:45:44 +00:00
audit.c
audit: Send netlink ACK before setting connection in auditd_set
2024-03-08 08:21:30 +00:00
audit.h
audit: fix a net reference leak in audit_list_rules_send()
2020-06-20 10:25:10 +02:00
auditfilter.c
audit: fix a net reference leak in audit_list_rules_send()
2020-06-20 10:25:10 +02:00
auditsc.c
audit: fix possible soft lockup in __audit_inode_child()
2023-09-23 10:46:56 +02:00
backtracetest.c
…
bounds.c
FROMLIST: mm: multi-gen LRU: minimal implementation
2022-07-01 09:16:44 +00:00
capability.c
…
cfi.c
ANDROID: cfi: remove unnecessary <asm/memory.h> include
2020-04-30 10:08:09 -07:00
compat.c
sched_getaffinity: don't assume 'cpumask_size()' is fully initialized
2023-04-05 11:14:19 +02:00
configs.c
…
context_tracking.c
…
cpu_pm.c
Merge android-4.14-stable.190 (d2d05bc) into msm-4.14
2020-09-06 01:12:33 +05:30
cpu.c
msm-4.14: Drop perf-critical API
2024-12-23 00:53:44 -03:00
crash_core.c
…
crash_dump.c
…
cred.c
cred: switch to using atomic_long_t
2023-12-20 15:32:35 +01:00
delayacct.c
UPSTREAM: delayacct: track delays from thrashing cache pages
2019-03-21 16:19:55 -07:00
dma.c
…
exec_domain.c
…
exit.c
af_unix: Block perfd from writing to the logd socket
2024-11-19 23:55:52 -03:00
extable.c
Merge branch 'android-4.14-stable' of https://android.googlesource.com/kernel/common
2023-12-07 20:15:44 -03:00
fork.c
msm-4.14: Bump boosts input timeouts
2024-12-23 00:59:46 -03:00
freezer.c
…
futex.c
Merge branch 'android-4.14-stable' of https://android.googlesource.com/kernel/common
2023-12-07 20:15:44 -03:00
gen_kheaders.sh
kheaders: include only headers into kheaders_data.tar.xz
2020-07-12 21:32:07 -07:00
groups.c
…
hung_task.c
Merge android-4.14.114 (c680586) into msm-4.14
2019-06-25 03:05:18 -07:00
irq_work.c
…
jump_label.c
jump_label: Disable jump labels in __exit code
2022-06-10 15:41:47 +07:00
kallsyms.c
ANDROID: kallsyms: strip hashes from function names with ThinLTO
2020-01-29 17:06:43 -08:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kcov.c
BACKPORT: kcov: remote coverage support
2020-01-13 19:40:11 +00:00
kexec_core.c
kexec: fix a memory leak in crash_shrink_memory()
2023-08-11 11:33:34 +02:00
kexec_file.c
kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add]
2022-07-02 16:18:11 +02:00
kexec_internal.h
…
kexec.c
…
kheaders.c
BACKPORT: kheaders: Move from proc to sysfs
2019-06-12 12:35:03 +00:00
kmod.c
kmod: make request_module() return an error when autoloading is disabled
2020-04-24 08:00:44 +02:00
kprobes.c
Merge branch 'linux-4.14.y' of https://github.com/openela/kernel-lts
2024-06-04 16:33:29 -03:00
ksysfs.c
Revert "rcu: Force rcu_expedited for Android"
2024-11-02 20:11:24 -03:00
kthread.c
cpu-boost: Rework scheduling setup
2024-03-27 17:56:46 -03:00
latencytop.c
…
Makefile
msm-4.14: Revert some unsafe optimizations
2024-09-29 17:32:34 -03:00
memremap.c
BACKPORT: mm: remove superfluous __ClearPageActive()
2022-07-01 09:14:41 +00:00
module_signing.c
…
module-internal.h
…
module.c
Merge branch 'android-4.14-stable' of https://android.googlesource.com/kernel/common
2023-12-07 20:15:44 -03:00
notifier.c
x86/mm: split vmalloc_sync_all()
2020-04-02 16:34:20 +02:00
nsproxy.c
…
padata.c
crypto: pcrypt - Fix hungtask for PADATA_RESET
2023-11-28 16:45:43 +00:00
panic.c
Merge branch 'deprecated/android-4.14-stable' of https://android.googlesource.com/kernel/common into HEAD
2024-03-25 23:54:05 -03:00
params.c
params: lift param_set_uint_minmax to common code
2024-07-15 17:44:31 +00:00
pid_namespace.c
memcg: enable accounting for pids in nested pid namespaces
2021-09-22 11:45:32 +02:00
pid.c
BACKPORT: pid: move pidfd_get_pid() to pid.c
2022-07-31 09:36:45 +00:00
profile.c
profiling: fix shift too large makes kernel panic
2022-08-25 11:11:24 +02:00
ptrace.c
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-14 16:53:43 +02:00
range.c
…
reboot.c
printk: Collapse shutdown types into a single dump reason
2024-11-01 22:39:10 -03:00
relay.c
kernel/relay.c: fix memleak on destroy relay channel
2020-08-26 10:29:54 +02:00
resource.c
…
scs.c
ANDROID: scs: fix recursive spinlock in scs_check_usage
2020-06-02 16:13:43 +00:00
seccomp.c
seccomp: Invalidate seccomp mode to catch death failures
2022-02-16 12:44:52 +01:00
signal.c
BACKPORT: pidfd: add P_PIDFD to waitid()
2022-07-31 09:36:45 +00:00
smp.c
This is the 4.14.355 OpenELA-Extended LTS stable release
2024-10-31 20:49:41 -03:00
smpboot.c
kthread: Extract KTHREAD_IS_PER_CPU
2021-02-07 14:47:41 +01:00
smpboot.h
…
softirq.c
softirq: Import Sony changes
2024-05-10 15:48:33 -03:00
stacktrace.c
…
stop_machine.c
…
sys_ni.c
BACKPORT: mm/madvise: introduce process_madvise() syscall: an external memory hinting API
2022-07-31 09:36:45 +00:00
sys.c
Merge branch 'linux-4.14.y' of https://github.com/openela/kernel-lts
2024-04-18 09:46:38 -03:00
sysctl_binary.c
net: ipv6: addrconf: IPv6 tethering enhancement
2019-02-05 17:36:19 -07:00
sysctl.c
BACKPORT: sched/uclamp: Add a new sysctl to control RT default boost value
2024-12-16 13:44:56 -03:00
task_work.c
…
taskstats.c
taskstats: extended taskstats2 with acct fields
2020-06-17 12:53:11 +05:30
test_kprobes.c
…
torture.c
rcu: Squash backport from v5.4
2022-04-06 13:18:17 +07:00
tracepoint.c
rcu: Squash backport from v5.4
2022-04-06 13:18:17 +07:00
tsacct.c
taskstats: Cleanup the use of task->exit_code
2022-02-23 11:57:34 +01:00
ucount.c
…
uid16.c
…
umh.c
usermodehelper: reset umask to default before executing user process
2020-10-14 09:51:10 +02:00
up.c
smp: Fix smp_call_function_single_async prototype
2021-05-22 10:57:35 +02:00
user_namespace.c
fuse: Restrict allow_other to the superblock's namespace or a descendant
2022-04-06 13:18:49 +07:00
user-return-notifier.c
…
user.c
…
utsname_sysctl.c
…
utsname.c
…
watchdog_hld.c
watchdog/perf: properly initialize the turbo mode timestamp and rearm counter
2024-10-10 10:27:24 +00:00
watchdog.c
Merge android-4.14-stable.180 (816f245) into msm-4.14
2020-08-05 11:41:56 +05:30
workqueue_internal.h
UPSTREAM: psi: fix aggregation idle shut-off
2019-03-21 16:19:56 -07:00
workqueue.c
msm-4.14: Drop perf-critical API
2024-12-23 00:53:44 -03:00