Date: Mon, 13 Jul 2015 23:50:21 +0200 From: Pawel Pekala <pawel@FreeBSD.org> To: Mateusz Guzik <mjguzik@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: Instant panic while trying run ports-mgmt/poudriere Message-ID: <20150713235021.5824ee48@FreeBSD.org> In-Reply-To: <20150713212820.GA21313@dft-labs.eu> References: <20150713231205.627bab36@FreeBSD.org> <20150713212820.GA21313@dft-labs.eu>
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Hi Mateusz,
On 2015-07-13 23:28 +0200, Mateusz Guzik <mjguzik@gmail.com> wrote:
>On Mon, Jul 13, 2015 at 11:12:05PM +0200, Pawel Pekala wrote:
>> Hi
>>=20
>> I'm getting 100% reproducible kernel crash while trying build ports
>> with poudriere on my system. This started to show up about 2-3 weeks
>> ago. I upgrade my system on weekly basis usually on saturday.
>> Here's backtrace:
>>=20
>> (kgdb) bt
>[..]
>> at /hdd/src/sys/amd64/amd64/trap.c:201
>> #25 0xffffffff80dace32 in calltrap ()
>> at /hdd/src/sys/amd64/amd64/exception.S:235 #26 0xffffffff80941430
>> in knote (list=3D0xfffff801a2589408, hint=3D2147483648, lockflags=3D<val=
ue
>> optimized out>) at /hdd/src/sys/kern/kern_event.c:1920 #27
>> 0xffffffff80946a51 in exit1 (td=3D0xfffff801b84014d0, rv=3D<value
>> optimized out>) at /hdd/src/sys/kern/kern_exit.c:560 #28
>> 0xffffffff80945f1e in sys_sys_exit (td=3D0x0, uap=3D<value optimized
>> out>) at /hdd/src/sys/kern/kern_exit.c:178 #29 0xffffffff80dcdaa2 in
>> out>amd64_syscall (td=3D0xfffff801b84014d0, traced=3D0)
>> at subr_syscall.c:133
>> #30 0xffffffff80dad11b in Xfast_syscall ()
>> at /hdd/src/sys/amd64/amd64/exception.S:395 #31 0x0000000800922eea
>> in ?? () Previous frame inner to this frame (corrupt stack?)
>> Current language: auto; currently minimal
>>=20
>> Let me know if you need more details.
>
>
>Well, if the problem is really that reproducible it would be best if
>you narrowed it down to the exact commit.
>
>However, quick look suggests you may be a "victim" of r284861.
>
>Can you enter kgdb and:
>f 26
>p *list
>
>?
(kgdb) f 26
#26 0xffffffff80941430 in knote (list=3D0xfffff801a2589408, hint=3D21474836=
48,=20
lockflags=3D<value optimized out>) at /hdd/src/sys/kern/kern_event.c:19=
20
1920 } else if ((lockflags & KNF_NOKQLOCK) !=3D 0) {
Current language: auto; currently minimal
(kgdb) p *list
$1 =3D {kl_list =3D {slh_first =3D 0x0}, kl_lock =3D 0xffffffff809418e0 <kn=
list_mtx_lock>,=20
kl_unlock =3D 0xffffffff80941900 <knlist_mtx_unlock>,=20
kl_assert_locked =3D 0xffffffff80941920 <knlist_mtx_assert_locked>,=20
kl_assert_unlocked =3D 0xffffffff80941940 <knlist_mtx_assert_unlocked>,=20
kl_lockarg =3D 0xfffff801a2589120}
Forgot to add my uname -a last time:
FreeBSD blaviken.slowicza.org 11.0-CURRENT FreeBSD 11.0-CURRENT #44 r285509=
: Mon Jul 13 22:38:11 CEST 2015 corn@blaviken.slowicza.org:/usr/obj/hdd=
/src/sys/GENERIC amd64
--=20
pozdrawiam / with regards
Pawe=C5=82 P=C4=99kala
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