| commit | c0c0b649d67aa775aa9851de61aade17504be70c | |
| author | Oleg Nesterov <oleg@tv-sign.ru> | |
| Fri, 8 Feb 2008 12:19:00 +0000 (8 04:19 -0800) | ||
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | |
| Fri, 8 Feb 2008 17:22:26 +0000 (8 09:22 -0800) | ||
| tree | 5902fb53a364155352fcc04e87860d724d8b31fd | treesnapshot (tar.gz zip) |
| parent | 34a1738f7da0b3d28d4b066d03a78f46b8cab68f | commitdiff |
ptrace_check_attach: remove unneeded ->signal != NULL check
It is not possible to see the PT_PTRACED task without ->signal/sighand under
tasklist_lock, release_task() does ptrace_unlink() first. If the task was
already released before, ptrace_attach() can't succeed and set PT_PTRACED.
Remove this check.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It is not possible to see the PT_PTRACED task without ->signal/sighand under
tasklist_lock, release_task() does ptrace_unlink() first. If the task was
already released before, ptrace_attach() can't succeed and set PT_PTRACED.
Remove this check.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| kernel/ptrace.c | diffblobblamehistory |