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authorKirill Korotaev <dev@sw.ru>2006-09-29 02:00:05 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 09:18:12 -0700
commit3b9b8ab65d8eed784b9164d03807cb2bda7b5cd6 (patch)
tree104c7b01768acd7e152cbf66e4868a73804e8af9 /include/linux/file.h
parentfc09561d6392771a392dea55c287de7e849b6b63 (diff)
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[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/linux/file.h')
-rw-r--r--include/linux/file.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/file.h b/include/linux/file.h
index 9f7c251..74183e6 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 */
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