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Date:      Sun, 4 Nov 2012 00:08:43 +0200
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Alexander Leidinger <Alexander@Leidinger.net>
Cc:        current@freebsd.org
Subject:   Re: watchdogd coredump
Message-ID:  <20121103220843.GI73505@kib.kiev.ua>
In-Reply-To: <20121103225542.00001118@unknown>
References:  <20121103225542.00001118@unknown>

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On Sat, Nov 03, 2012 at 10:55:42PM +0100, Alexander Leidinger wrote:
> Hi,
>=20
> I updated from r239708 to r242511 and my watchdogd coredumps (and
> brings down the system... well, the WD works).
>=20
> Before I have a deeper look (recompiling with debugging and such) at
> this, can someone confirm that with a recent -current and a WD
> configured to call a shell script which does a simple ls to /dev/null
> there is a segfault in watchdogd?
>=20
> watchdogd_flags=3D"-e /root/bin/wd_check.sh -s 5 -t 60"
>=20
> ---snip---
> # cat /root/bin/wd_check.sh
> #!/bin/sh
>=20
> exec ls / /space/jails >/dev/null 2>&1 </dev/null
> ---snip---
>=20
> The not so useful backtrace of the watchdogd core:
> ---snip---
> #0  0x0000000800609520 in dlopen () from /libexec/ld-elf.so.1
> #1  0x000000080060309d in .text () from /libexec/ld-elf.so.1
> #2  0x0000000000000246 in ?? ()
> #3  0xfffffe001ee700f8 in ?? ()
> #4  0xfffffe001ee700f8 in ?? ()
> #5  0xffffffff80647e80 in ?? ()
> #6  0x0000000000000001 in ?? ()
> #7  0x00007fffffffdb90 in ?? ()
> #8  0x0000000000000013 in ?? ()
> #9  0x00007fffffffdb80 in ?? ()
> #10 0x0000000000000000 in ?? ()
> #11 0x0000000000000206 in ?? ()
> #12 0x00007fffffffdaf0 in ?? ()
> #13 0x000000080061cc00 in ?? ()
> #14 0x0000000000000031 in ?? ()
> #15 0x0000000800c93dc9 in system () from /lib/libc.so.7
> #16 0x0000000000401558 in ?? ()
> #17 0x0000000000400f7e in ?? ()
> #18 0x000000080061c000 in ?? ()
> #19 0x0000000000000000 in ?? ()
> #20 0x0000000000000007 in ?? ()
> #21 0x00007fffffffdef8 in ?? ()
> ---snip---

Are you sure that your kernel is at r242511 ?

The issue should have been fixed by r242011.

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