Messages in this thread |  | | Date | Thu, 13 Feb 2014 18:40:20 +0100 | From | Oleg Nesterov <> | Subject | Re: 3.14-rc2 XFS backtrace because irqs_disabled. |
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On 02/12, Linus Torvalds wrote: > > On Wed, Feb 12, 2014 at 1:14 PM, Al Viro <viro@zeniv.linux.org.uk> wrote: > > > > Umm... What if we delay __sigqueue_free()? After all, that's where the > > fat sucker normally comes from. That way we might get away with much > > smaller structure on stack... > > Sounds like the RightThing(tm) to do to me, and I don't see why it > wouldn't work.
Probably... I'll try to reply tomorrow.
> We'd have to teach each user of "dequeue_signal()" to free the siginfo > thing.
And we should be careful with SIGQUEUE_PREALLOC, at least collect_signal() should not do list_del_init()... Plus we need to handle the SEND_SIG_FORCED-like case.
Oleg.
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