Searched hist:"54708 d2858e79a2bdda10bf8a20c80eb96c20613" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/fs/proc/ |
| H A D | fd.c | diff 54708d2858e79a2bdda10bf8a20c80eb96c20613 Fri Nov 06 18:30:06 CST 2015 Oleg Nesterov <oleg@redhat.com> proc: actually make proc_fd_permission() thread-friendly
The commit 96d0df79f264 ("proc: make proc_fd_permission() thread-friendly")
fixed the access to /proc/self/fd from sub-threads, but introduced another
problem: a sub-thread can't access /proc/<tid>/fd/ or /proc/thread-self/fd
if generic_permission() fails.
Change proc_fd_permission() to check same_thread_group(pid_task(), current).
Fixes: 96d0df79f264 ("proc: make proc_fd_permission() thread-friendly")
Reported-by: "Jin, Yihua" <yihua.jin@intel.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|