diff options
| author | Linus Torvalds <torvalds@osdl.org> | 2005-11-09 11:37:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-11-10 21:22:08 -0800 |
| commit | 082d52c56f642d21b771a13221068d40915a1409 (patch) | |
| tree | f9aaef5204923c5dd1e2a6ca2080b940ecd1d9b8 | |
| parent | 24547e2e65e534598580945b791f3ce7777f829b (diff) | |
[PATCH] Fix ptrace self-attach rule
Before we did CLONE_THREAD, the way to check whether we were attaching
to ourselves was to just check "current == task", but with CLONE_THREAD
we should check that the thread group ID matches instead.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | kernel/ptrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 019e04ec065..fcfc4568b45 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -152,7 +152,7 @@ int ptrace_attach(struct task_struct *task) retval = -EPERM; if (task->pid <= 1) goto bad; - if (task == current) + if (task->tgid == current->tgid) goto bad; /* the same process cannot be attached many times */ if (task->ptrace & PT_PTRACED) |