diff options
| author | Kirill Korotaev <dev@sw.ru> | 2006-09-29 02:00:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 09:18:12 -0700 |
| commit | 3b9b8ab65d8eed784b9164d03807cb2bda7b5cd6 (patch) | |
| tree | 104c7b01768acd7e152cbf66e4868a73804e8af9 /include | |
| parent | fc09561d6392771a392dea55c287de7e849b6b63 (diff) | |
| download | lwn-3b9b8ab65d8eed784b9164d03807cb2bda7b5cd6.tar.gz lwn-3b9b8ab65d8eed784b9164d03807cb2bda7b5cd6.zip | |
[PATCH] Fix unserialized task->files changing
Fixed race on put_files_struct on exec with proc. Restoring files on
current on error path may lead to proc having a pointer to already kfree-d
files_struct.
->files changing at exit.c and khtread.c are safe as exit_files() makes all
things under lock.
Found during OpenVZ stress testing.
[akpm@osdl.org: add export]
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/file.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/file.h b/include/linux/file.h index 9f7c2513866f..74183e6f7f45 100644 --- a/include/linux/file.h +++ b/include/linux/file.h @@ -112,5 +112,6 @@ struct task_struct; struct files_struct *get_files_struct(struct task_struct *); void FASTCALL(put_files_struct(struct files_struct *fs)); +void reset_files_struct(struct task_struct *, struct files_struct *); #endif /* __LINUX_FILE_H */ |