Messages in this thread | | | From | Roland McGrath <> | Subject | Re: [PATCH -mm 2/3] proc: make collect_sigign_sigcatch() rcu-safe | Date | Fri, 9 Apr 2010 12:53:25 -0700 (PDT) |
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> In theory, this ->sighand can be re-used under us (but it can't go away). > We could check task->sighand == sighand once again after the main loop > to prevent the race with exit/exec, but I don't think this is really > needed for fs/proc.
In v2.6.34-rc3-500-g0eddb51 this isn't possible because the calls from task_sig() and do_task_stat() are under siglock. Is that locking removed by another pending change?
Thanks, Roland
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