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Re: Issue with core dump

To: Tejun Heo <>
Subject: Re: Issue with core dump
From: Oleg Nesterov <>
Date: Wed, 2 Nov 2011 16:55:05 +0100
Cc: trisha yad <>, linux-mm <>, Russell King - ARM Linux <>,,,,,, Andrew Morton <>, Konstantin Khlebnikov <>, KOSAKI Motohiro <>, "Rafael J. Wysocki" <>, Rusty Russell <>
In-reply-to: <>
References: <> <> <> <>
User-agent: Mutt/1.5.18 (2008-05-17)
On 11/02, Tejun Heo wrote:
> Also, the time between do_user_fault() and actual core dumping isn't
> the important factor here.  do_user_fault() directly triggers delivery
> of SIGSEGV (or BUS) and signal delivery will immediately deliver
> SIGKILL to all other threads in the process,

Not really, note the "if (!sig_kernel_coredump(sig))" check. And this
is what we can improve. But this is not simple, and personally I think
doesn't worth the trouble.


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