diff options
| author |   Oleg Nesterov <oleg@tv-sign.ru> | 2008-02-08 04:18:58 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 09:22:26 -0800 |
| commit | 6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4 (patch) | |
| tree | 60d3d9719eef3076527fcbf9c3cb362fe0f52d61 /kernel/signal.c | |
| parent | IPC: consolidate sem_exit_ns(), msg_exit_ns() and shm_exit_ns() (diff) | |
| download | linux-dev-6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4.tar.xz linux-dev-6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4.zip | |
kill PT_ATTACHED
Since the patch
"Fix ptrace_attach()/ptrace_traceme()/de_thread() race"
commit f5b40e363ad6041a96e3da32281d8faa191597b9
we set PT_ATTACHED and change child->parent "atomically" wrt task_list lock.
This means we can remove the checks like "PT_ATTACHED && ->parent != ptracer"
which were needed to catch the "ptrace attach is in progress" case. We can
also remove the flag itself since nobody else uses it.
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>
Diffstat (limited to 'kernel/signal.c')
| -rw-r--r-- | kernel/signal.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 5d30ff561847..6d6d1ab39e7e 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1556,11 +1556,6 @@ static inline int may_ptrace_stop(void) { if (!likely(current->ptrace & PT_PTRACED)) return 0; - - if (unlikely(current->parent == current->real_parent && - (current->ptrace & PT_ATTACHED))) - return 0; - /* * Are we in the middle of do_coredump? * If so and our tracer is also part of the coredump stopping |