diff options
| author | Oleg Nesterov <[email protected]> | 2015-11-06 16:30:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2015-11-06 17:50:42 -0800 |
| commit | 54708d2858e79a2bdda10bf8a20c80eb96c20613 (patch) | |
| tree | 4228afc090f3a84482ec6a039b06e3769c0ee1a1 /net/lapb/lapb_iface.c | |
| parent | 3a49f3d2a10dfb27411d321900197a3d6c52405b (diff) | |
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" <[email protected]>
Signed-off-by: Oleg Nesterov <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'net/lapb/lapb_iface.c')
0 files changed, 0 insertions, 0 deletions