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SubjectRe: [PATCH 5/5] ptrace: Revert "Prepare to fix racy accesses on task breakpoints"
On Sun, Apr 14, 2013 at 06:05:41PM +0200, Oleg Nesterov wrote:
> This reverts commit bf26c018490c2fce7fe9b629083b96ce0e6ad019.
>
> The patch was fine but we can no longer race with SIGKILL after
> 9899d11f "ptrace: ensure arch_ptrace/ptrace_request can never race
> with SIGKILL", the __TASK_TRACED tracee can't be woken up and
> ->ptrace_bps[] can't go away.
>
> Now that ptrace_get_breakpoints/ptrace_put_breakpoints have no
> callers, we can kill them and remove task->ptrace_bp_refcnt.
>
> Signed-off-by: Oleg Nesterov <oleg@redhat.com>

Acked-by: Frederic Weisbecker <fweisbec@gmail.com>

Thanks a lot!


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