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Josef Bacik 0eaf383c6a btrfs: do not BUG_ON in link_to_fixup_dir 
[ Upstream commit 91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d ]

While doing error injection testing I got the following panic

  kernel BUG at fs/btrfs/tree-log.c:1862!
  invalid opcode: 0000 [#1] SMP NOPTI
  CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305
  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014
  RIP: 0010:link_to_fixup_dir+0xd5/0xe0
  RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216
  RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0
  RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000
  RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001
  R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800
  R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065
  FS:  00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0
  Call Trace:
   replay_one_buffer+0x409/0x470
   ? btree_read_extent_buffer_pages+0xd0/0x110
   walk_up_log_tree+0x157/0x1e0
   walk_log_tree+0xa6/0x1d0
   btrfs_recover_log_trees+0x1da/0x360
   ? replay_one_extent+0x7b0/0x7b0
   open_ctree+0x1486/0x1720
   btrfs_mount_root.cold+0x12/0xea
   ? __kmalloc_track_caller+0x12f/0x240
   legacy_get_tree+0x24/0x40
   vfs_get_tree+0x22/0xb0
   vfs_kern_mount.part.0+0x71/0xb0
   btrfs_mount+0x10d/0x380
   ? vfs_parse_fs_string+0x4d/0x90
   legacy_get_tree+0x24/0x40
   vfs_get_tree+0x22/0xb0
   path_mount+0x433/0xa10
   __x64_sys_mount+0xe3/0x120
   do_syscall_64+0x3d/0x80
   entry_SYSCALL_64_after_hwframe+0x44/0xae

We can get -EIO or any number of legitimate errors from
btrfs_search_slot(), panicing here is not the appropriate response.  The
error path for this code handles errors properly, simply return the
error.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-06-03 08:36:22 +02:00
..
9p
9P: Cast to loff_t before multiplying
2020-11-05 11:07:03 +01:00
adfs
fs/adfs: super: fix use-after-free bug
2019-08-06 19:05:21 +02:00
affs
fs/affs: release old buffer head on error path
2021-03-03 18:22:54 +01:00
afs
afs: Fix some tracing details
2020-04-02 16:34:33 +02:00
autofs4
autofs: fix a leak in autofs_expire_indirect()
2019-12-17 20:37:24 +01:00
befs
…
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:42:51 +01:00
btrfs
btrfs: do not BUG_ON in link_to_fixup_dir
2021-06-03 08:36:22 +02:00
cachefiles
cachefiles: Handle readpage error correctly
2020-11-05 11:07:05 +01:00
ceph
ceph: fix fscache invalidation
2021-05-22 10:57:42 +02:00
cifs
cifs: fix memory leak in smb2_copychunk_range
2021-05-26 11:46:58 +02:00
coda
coda: add error handling for fget
2019-08-06 19:05:23 +02:00
configfs
configfs: fix a use-after-free in __configfs_open_file
2021-03-17 16:34:34 +01:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-13 11:15:12 -08:00
crypto
fscrypt: return -EXDEV for incompatible rename or link into encrypted dir
2020-11-05 11:06:52 +01:00
debugfs
debugfs: fix use-after-free on symlink traversal
2019-05-08 07:20:49 +02:00
devpts
fs/devpts: always delete dcache dentry-s in dput()
2019-03-23 14:35:21 +01:00
dlm
fs: dlm: fix debugfs dump
2021-05-22 10:57:35 +02:00
ecryptfs
Revert "ecryptfs: replace BUG_ON with error handling code"
2021-05-26 11:47:00 +02:00
efivarfs
efivarfs: revert "fix memory leak in efivarfs_create()"
2020-12-02 08:34:44 +01:00
efs
…
exofs
exofs_mount(): fix leaks on failure exits
2019-12-05 15:37:28 +01:00
exportfs
exportfs: fix 'passing zero to ERR_PTR()' warning
2020-01-27 14:46:06 +01:00
ext2
ext2: fix missing percpu_counter_inc
2020-08-21 09:48:18 +02:00
ext4
ext4: fix error code in ext4_commit_super
2021-05-22 10:57:22 +02:00
f2fs
f2fs: fix a redundant call to f2fs_balance_fs if an error occurs
2021-05-22 10:57:38 +02:00
fat
fat: don't allow to mount if the FAT length == 0
2020-06-20 10:25:05 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 09:28:53 +01:00
fuse
cuse: prevent clone
2021-05-22 10:57:36 +02:00
gfs2
gfs2: report "already frozen/thawed" errors
2021-04-16 11:57:53 +02:00
hfs
fs/hfs/extent.c: fix array out of bounds read of array extent
2019-12-01 09:13:57 +01:00
hfsplus
hfsplus: fix crash and filesystem corruption when deleting files
2020-04-24 08:00:45 +02:00
hostfs
…
hpfs
…
hugetlbfs
mm: hugetlbfs: fix cannot migrate the fallocated HugeTLB page
2021-02-10 09:12:09 +01:00
isofs
isofs: release buffer head before return
2021-03-03 18:22:46 +01:00
jbd2
jbd2: abort journal if free a async write error metadata buffer
2020-09-03 11:22:29 +02:00
jffs2
jffs2: check the validity of dstlen in jffs2_zlib_compress()
2021-05-22 10:57:22 +02:00
jfs
JFS: more checks for invalid superblock
2021-03-07 11:27:42 +01:00
kernfs
kernfs: fix ino wrap-around detection
2019-12-17 20:38:50 +01:00
lockd
lockd: don't use interval-based rebinding over TCP
2020-12-29 13:46:57 +01:00
minix
fs/minix: reject too-large maximum file size
2020-08-21 09:48:15 +02:00
ncpfs
…
nfs
NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
2021-06-03 08:36:18 +02:00
nfs_common
nfs_common: need lock during iterate through the list
2020-12-29 13:47:01 +01:00
nfsd
nfsd4: readdirplus shouldn't return parent of export
2021-01-23 15:48:45 +01:00
nilfs2
nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()
2020-06-20 10:25:01 +02:00
nls
…
notify
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
ntfs
ntfs: check for valid standard information attribute
2021-03-03 18:22:36 +01:00
ocfs2
ocfs2: fix deadlock between setattr and dio_end_io_write
2021-04-16 11:57:48 +02:00
omfs
…
openpromfs
…
orangefs
help_next should increase position index
2020-02-28 16:36:08 +01:00
overlayfs
ovl: skip getxattr of security labels
2021-02-23 14:00:31 +01:00
proc
proc: Check /proc/$pid/attr/ writes against file opener
2021-06-03 08:36:12 +02:00
pstore
pstore/ram: Write new dumps to start of recycled zones
2020-01-09 10:17:55 +01:00
qnx4
…
qnx6
…
quota
quota: Fix memory leak when handling corrupted quota file
2021-03-03 18:22:44 +01:00
ramfs
ramfs: fix nommu mmap with gaps in the page cache
2020-10-29 09:07:11 +01:00
reiserfs
reiserfs: update reiserfs_xattrs_initialized() condition
2021-04-07 12:47:02 +02:00
romfs
romfs: fix uninitialized memory leak in romfs_dev_read()
2020-08-26 10:29:54 +02:00
squashfs
squashfs: fix divide error in calculate_skip()
2021-05-22 10:57:39 +02:00
sysfs
sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
2021-03-07 11:27:45 +01:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 09:28:48 +01:00
tracefs
…
ubifs
ubifs: wbuf: Don't leak kernel memory to flash
2021-01-17 13:58:59 +01:00
udf
udf: fix silent AED tagLocation corruption
2021-03-17 16:34:30 +01:00
ufs
fs/ufs: avoid potential u32 multiplication overflow
2020-08-21 09:48:22 +02:00
xfs
xfs: Fix assert failure in xfs_setattr_size()
2021-03-07 11:27:43 +01:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-21 14:13:04 +01:00
anon_inodes.c
…
attr.c
…
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()
2020-06-03 08:18:03 +02:00
binfmt_em86.c
…
binfmt_flat.c
fs/binfmt_flat.c: make load_flat_shared_library() work
2019-07-03 13:15:59 +02:00
binfmt_misc.c
binfmt_misc: fix possible deadlock in bm_register_write
2021-03-17 16:34:35 +01:00
binfmt_script.c
exec: load_script: Do not exec truncated interpreter path
2019-11-06 12:42:59 +01:00
block_dev.c
block: reexpand iov_iter after read/write
2021-05-22 10:57:43 +02:00
buffer.c
fs: Don't invalidate page buffers in block_write_full_page()
2020-11-05 11:06:58 +01:00
char_dev.c
chardev: Avoid potential use-after-free in 'chrdev_open()'
2020-01-14 20:05:39 +01:00
compat_binfmt_elf.c
…
compat_ioctl.c
fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP
2020-01-09 10:17:58 +01:00
compat.c
…
coredump.c
coredump: fix crash when umh is disabled
2020-05-20 08:16:58 +02:00
dax.c
dax: pass NOWAIT flag to iomap_apply
2020-03-11 18:02:43 +01:00
dcache.c
fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb()
2019-02-06 17:31:34 +01:00
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-16 11:57:48 +02:00
drop_caches.c
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:11:59 +01:00
eventfd.c
…
eventpoll.c
ep_create_wakeup_source(): dentry name can change under you...
2020-10-14 09:51:09 +02:00
exec.c
mm: fix exec activate_mm vs TLB shootdown and lazy tlb switching race
2020-11-18 18:28:03 +01:00
fcntl.c
…
fhandle.c
…
file_table.c
…
file.c
fix multiplication overflow in copy_fdtable()
2020-05-27 16:42:51 +02:00
filesystems.c
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
2020-04-24 08:00:43 +02:00
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
memcg: fix a crash in wb_workfn when a device disappears
2021-02-23 14:00:30 +01:00
inode.c
futex: Fix inode life-time issue
2020-04-02 16:34:21 +02:00
internal.h
…
ioctl.c
vfs: swap names of {do,vfs}_clone_file_range()
2018-11-10 07:48:33 -08:00
iomap.c
iomap: Fix pipe page leakage during splicing
2019-12-17 20:38:57 +01:00
Kconfig
…
Kconfig.binfmt
…
libfs.c
libfs: fix error cast of negative value in simple_attr_write()
2020-11-24 13:05:50 +01:00
locks.c
locks: print unsigned ino in /proc/locks
2020-01-09 10:17:55 +01:00
Makefile
…
mbcache.c
…
mount.h
…
mpage.c
…
namei.c
namei: only return -ECHILD from follow_dotdot_rcu()
2020-03-11 18:02:53 +01:00
namespace.c
fs/namespace.c: fix mountpoint reference counter race
2020-05-02 17:24:20 +02:00
no-block.c
…
nsfs.c
…
open.c
cifs_atomic_open(): fix double-put on late allocation failure
2020-03-20 10:54:16 +01:00
pipe.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
pnode.c
propagate_one(): mnt_set_mountpoint() needs mount_lock
2020-05-02 17:24:47 +02:00
pnode.h
…
posix_acl.c
…
proc_namespace.c
…
read_write.c
vfs: avoid problematic remapping requests into partial EOF block
2019-12-01 09:13:51 +01:00
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-28 12:08:41 +02:00
select.c
kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()
2021-03-24 11:05:05 +01:00
seq_file.c
…
signalfd.c
…
splice.c
fs: prevent page refcount overflow in pipe_buf_get
2019-05-04 09:15:18 +02:00
stack.c
…
stat.c
…
statfs.c
vfs: Fix EOVERFLOW testing in put_compat_statfs64
2019-10-11 18:18:48 +02:00
super.c
vfs: remove lockdep bogosity in __sb_start_write
2020-11-24 13:05:44 +01:00
sync.c
…
timerfd.c
…
userfaultfd.c
userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK
2020-01-04 13:59:58 +01:00
utimes.c
…
xattr.c
xattr: break delegations in {set,remove}xattr
2020-08-21 09:48:00 +02:00