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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2006-10-02 09:18:59 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 14:57:25 (GMT) |
| commit | 1a657f78dcc8ea7c53eaa1f2a45ea2315738c15f (patch) | |
| tree | a19972027792082fed505c8d540f7d877e37c0ab /Documentation/RCU/whatisRCU.txt | |
| parent | 1c0d04c9e44f4a248335c33d2be7c7f7b06ff359 (diff) | |
| download | linux-1a657f78dcc8ea7c53eaa1f2a45ea2315738c15f.tar.xz | |
[PATCH] introduce get_task_pid() to fix unsafe get_pid()
proc_pid_make_inode:
ei->pid = get_pid(task_pid(task));
I think this is not safe. get_pid() can be preempted after checking "pid
!= NULL". Then the task exits, does detach_pid(), and RCU frees the pid.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/RCU/whatisRCU.txt')
0 files changed, 0 insertions, 0 deletions