Re: [PATCH 5/5] ptrace: Revert "Prepare to fix racy accesses on task breakpoints"

2013-04-15 Thread Frederic Weisbecker
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

[PATCH 5/5] ptrace: Revert "Prepare to fix racy accesses on task breakpoints"

2013-04-14 Thread Oleg Nesterov
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 ptr