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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2006-02-15 22:50:10 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-15 11:05:43 -0800 |
| commit | 5ecfbae093f0c37311e89b29bfc0c9d586eace87 (patch) | |
| tree | eabd0a145af64e26c900578c95175ab313828661 /include | |
| parent | dadac81b1b86196fcc48fb87620403c4a7174f06 (diff) | |
| download | linux-stable-5ecfbae093f0c37311e89b29bfc0c9d586eace87.tar.gz linux-stable-5ecfbae093f0c37311e89b29bfc0c9d586eace87.tar.bz2 linux-stable-5ecfbae093f0c37311e89b29bfc0c9d586eace87.zip | |
[PATCH] fix zap_thread's ptrace related problems
1. The tracee can go from ptrace_stop() to do_signal_stop()
after __ptrace_unlink(p).
2. It is unsafe to __ptrace_unlink(p) while p->parent may wait
for tasklist_lock in ptrace_detach().
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ptrace.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index 9d5cd106b344..0d36750fc0f1 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -84,6 +84,7 @@ extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __us extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned long dst, int len); extern int ptrace_attach(struct task_struct *tsk); extern int ptrace_detach(struct task_struct *, unsigned int); +extern void __ptrace_detach(struct task_struct *, unsigned int); extern void ptrace_disable(struct task_struct *); extern int ptrace_check_attach(struct task_struct *task, int kill); extern int ptrace_request(struct task_struct *child, long request, long addr, long data); |