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Subject: [Bug 204340] [panic] nfsd, em, msix, fatal trap 9
Date: Fri, 27 Jan 2017 15:10:34 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D204340

Andriy Gapon <avg@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |avg@FreeBSD.org

--- Comment #17 from Andriy Gapon <avg@FreeBSD.org> ---
Rick,
we got what looks like a very similar crash in FreeBSD 10.3:

db_trace_self_wrapper+0x2a
kdb_backtrace+0x37
vpanic+0xf7
panic+0x67
trap_fatal+0x264
trap_pfault+0x216
trap+0x32b
calltrap+0x8
__mtx_lock_sleep+0xa2
xprt_active+0xe7
svc_vc_soupcall+0x25
sowakeup+0x69
tcp_do_segment+0x319e
tcp_input+0x701
ip_input+0x14c
netisr_dispatch_src+0x228
ether_demux+0x1a5
ether_nh_input+0x1fc
netisr_dispatch_src+0x228
tcp_lro_flush+0x2b
ixgbe_rxeof+0x30d
ixgbe_msix_que+0x88
intr_event_execute_handlers+0x102
ithread_loop+0x9a
fork_exit+0x11f
fork_trampoline+0xe

It's this lock:
void=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20
xprt_active(SVCXPRT *xprt)=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
{=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20
        SVCGROUP *grp =3D xprt->xp_group;=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20

        mtx_lock(&grp->sg_lock);

Do you have any suggestions?
Thank you!

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