diff options
| author | Oleg Nesterov | 2008-04-30 09:52:51 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2008-04-30 17:29:35 +0200 |
| commit | 08d2c30ce98d274137f12b0a9b9c74137455922c (patch) | |
| tree | cc649fd249aef0c4d227406b17a1a75c9d327e50 /kernel/fork.c | |
| parent | signals: do_tkill: don't use tasklist_lock (diff) | |
| download | kernel-qcow2-linux-08d2c30ce98d274137f12b0a9b9c74137455922c.tar.gz kernel-qcow2-linux-08d2c30ce98d274137f12b0a9b9c74137455922c.tar.xz kernel-qcow2-linux-08d2c30ce98d274137f12b0a9b9c74137455922c.zip | |
signals: send_sig_info: don't take tasklist_lock
The comment in send_sig_info() is wrong, tasklist_lock can't help.
The caller must ensure the task can't go away, otherwise ->sighand can be NULL
even before we take the lock.
p->sighand could be changed by exec(), but I can't imagine how it is possible
to prevent exit(), but not exec().
Since the things seem to work, I assume all callers are correct. However,
drm_vbl_send_signals() looks broken. block_all_signals() which is solely used
by drm is definitely broken.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/fork.c')
0 files changed, 0 insertions, 0 deletions