diff options
| author | Chao Yu <chao@kernel.org> | 2026-09-10 02:20:26 +0000 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2026-09-14 15:21:49 +0000 |
| commit | b5a71253c5c7e1139eab2f3e1e13e0bf2cbcaac7 (patch) | |
| tree | 5f3d258993882a45c02a717a2fa95fd11e770d0f /tools/lib/python | |
| parent | ea3eea801c5c54932818ac528e169012a7418825 (diff) | |
f2fs: fix to avoid folio->mapping dereference in is_{meta, node}_folio()
Otherwise, it may cause NULL pointer dereference in race condition:
Thread A Thread B
- f2fs_setattr
- f2fs_truncate
- f2fs_truncate_blocks
- f2fs_do_truncate_blocks
- f2fs_truncate_inode_blocks
- truncate_dnode
- truncate_node
- invalidate_mapping_pages
- folio->mapping = NULL
- folio_lock
- is_node_folio
- F2FS_F_SB(folio): dereference on folio->mapping
Cc: stable@kernel.org
Fixes: 019a8912425e ("f2fs: introduce is_{meta,node}_folio")
Reported-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Closes: https://lore.kernel.org/linux-f2fs-devel/c5d29b31-e764-4782-9639-be84b1b2bfc2@kernel.org
Signed-off-by: Chao Yu <chao@kernel.org>
Reviewed-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions