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Date:      Sat, 02 May 2020 12:43:56 -0700
From:      Chris <bsd-lists@BSDforge.com>
To:        Grzegorz Junka <list1@gjunka.com>
Cc:        <freebsd-current@freebsd.org>
Subject:   Re: panic: Assertion lock == sq->sq_lock failed at /usr/src-13/sys/kern/subr_sleepqueue.c:371
Message-ID:  <af1f4e7a785ec88d5dea4d4c15e94d29@udns.ultimatedns.net>
In-Reply-To: <c8ac5e9a-47a0-f44b-ff52-594cd87bc67b@gjunka.com>

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On Sat, 2 May 2020 20:19:56 +0100 Grzegorz Junka list1@gjunka=2Ecom said

> On 02/05/2020 14:56, Grzegorz Junka wrote:
> >
> > On 02/05/2020 14:15, Grzegorz Junka wrote:
> >> cpuid =3D 3
> >>
> >> time =3D 1588422616
> >>
> >> KDB: stack backtrace:
> >>
> >> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame=20
> >> 0xfffffe00b27e86b0
> >>
> >> vpanic() at vpanic+0x182/frame 0xfffffe00b27e8700
> >>
> >> panic() at panic+0x43/frame =2E=2E=2E
> >>
> >> sleepq_add()
> >>
> >> =2E=2E=2E
> >>
> >> I see
> >>
> >> db>
> >>
> >> in the terminal=2E I tried "dump" but it says, Cannot dump: no dump=20
> >> device specified=2E
> >>
> >> Is there a guide how to deal wit those, i=2Ee=2E to gather information=20
> >> required to investigate issues?
> >
>=20
> Another thing is that I don't quite understand why the crash couldn't be=
=20
> dumped=2E
>=20
> root@crayon2:~ # swapinfo
> Device=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1K-blocks=
=C2=A0=C2=A0=C2=A0=C2=A0 Used=C2=A0=C2=A0=C2=A0 Avail Capacity
> /dev/zvol/tank3/swap=C2=A0 33554432=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 0 33554432=C2=A0=C2=A0=C2=A0=C2=A0 0%
>=20
> There is no entry in /etc/fstab though, should it be there too?

How about your rc=2Econf(5) ?

You need to define a dumpdev within it as:

# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
dumpdev=3D"YES"

Which defaults to the location of:

/var/crash


>=20
> --
>=20
> GrzegorzJ
>=20
>=20
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