linux-kernel - Re: [PATCH v2] sysctl: Add panic-fatal-signals

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Message-ID: <20190130162942.ppapys75ffvjgfct@axis.com>
Date:   Wed, 30 Jan 2019 17:29:42 +0100
From:   Vincent Whitchurch <vincent.whitchurch@...s.com>
To:     Richard Weinberger <richard.weinberger@...il.com>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] sysctl: Add panic-fatal-signals

On Wed, Jan 30, 2019 at 04:02:36PM +0100, Richard Weinberger wrote:
> Hmm, why can't this be a core dump helper?
> Such as:
> 
> #!/bin/sh
> # Usage:
> # echo "|/root/crash.sh %p %e %s" > /proc/sys/kernel/core_pattern
> 
> PID="$1"
> COMM="$2"
> SIGNAL="$3"
> 
> echo "$COMM ($PID) died by signal $SIGNAL, killing kernel" > /dev/kmsg
> echo c > /proc/sysrq-trigger

Yes, that looks like it should work.  Thanks.