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From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Maninder Singh <maninder1.s@samsung.com>
Cc: catalin.marinas@arm.com, will.deacon@arm.com,
	akpm@linux-foundation.org, kirill.shutemov@linux.intel.com,
	mark.rutland@arm.com, jack@suse.cz, linux-kernel@vger.kernel.org,
	ajeet.y@samsung.com, shijie.huang@arm.com, james.morse@arm.com,
	sandeepa.s.prabhu@gmail.com, labbott@redhat.com,
	Amit Nagal <amit.nagal@samsung.com>,
	linux-arm-kernel@lists.infradead.org, pankaj.m@samsung.com
Subject: Re: [PATCH 1/1] mm: call force_sig_info before prints
Date: Mon, 19 Dec 2016 11:07:35 +0000	[thread overview]
Message-ID: <20161219110735.GR14217@n2100.armlinux.org.uk> (raw)
In-Reply-To: <1482143832-11158-1-git-send-email-maninder1.s@samsung.com>

On Mon, Dec 19, 2016 at 04:07:12PM +0530, Maninder Singh wrote:
> prints can delay queuing of signal, so better to print
> after force_sig_info.
> 
> Let's say process generated SIGSEGV , and some other thread sends
> SIGKILL to crashing process and it gets queued before SIGSEGV becuase
> of little delay due to prints so in this case coredump might not generate.

In any case, that's going to be a race - you can't predict exactly when
the "other thread" will send the SIGKILL in relation to the SIGSEGV.

So, I don't see the point of this change.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

  reply	other threads:[~2016-12-19 11:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-19 10:37 Maninder Singh
2016-12-19 11:07 ` Russell King - ARM Linux [this message]
     [not found] ` <CGME20161219110753epcas3p1e2a8b5ce7bd4b4e26345f28ae803d72b@epcas3p1.samsung.com>
     [not found]   ` <20161221055911epcms5p1146cee9212cc17fa8d5b18c49a085def@epcms5p1>
2016-12-21  9:21     ` Russell King - ARM Linux

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