Date: Thu, 2 Jun 2016 00:07:48 +0000 (UTC)
From: Christos Zoulas <christos%astron.com@localhost>
To: current-users%netbsd.org@localhost
Subject: Re: nfs client kernel crash
In article <Pine.NEB.4.64.1606010908500.25929%6bone.informatik.uni-leipzig.de@localhost>,
<6bone%6bone.informatik.uni-leipzig.de@localhost> wrote:
hello
in rare cases, under high load the nfs client crashs:
0xffffffff8068630f in cpu_reboot (howto=howto@entry=260,
bootstr=bootstr@entry=0x0) at
/usr/src/sys/arch/amd64/amd64/machdep.c:671
671 dumpsys();
(gdb) bt
#0 0xffffffff8068630f in cpu_reboot (howto=howto@entry=260,
bootstr=bootstr@entry=0x0) at
/usr/src/sys/arch/amd64/amd64/machdep.c:671
#1 0xffffffff808cbce4 in vpanic (fmt=fmt@entry=0xffffffff80dd3d3d "trap",
ap=ap@entry=0xfffffe8157920d18) at /usr/src/sys/kern/subr_prf.c:340
#2 0xffffffff808cbd9f in panic (fmt=fmt@entry=0xffffffff80dd3d3d "trap")
at /usr/src/sys/kern/subr_prf.c:256
#3 0xffffffff8091b001 in trap (frame=0xfffffe8157920e20)
at /usr/src/sys/arch/amd64/amd64/trap.c:298
#4 0xffffffff80100fde in alltraps ()
#5 0xffffffff8070605c in nfs_timer (arg=<optimized out>)
at /usr/src/sys/nfs/nfs_socket.c:770
#6 0xffffffff80622022 in callout_softclock (v=<optimized out>)
at /usr/src/sys/kern/kern_timeout.c:736
#7 0xffffffff80616bb8 in softint_execute (l=<optimized out>, s=2,
si=0xffff80035866a0c0) at /usr/src/sys/kern/kern_softint.c:589
#8 softint_dispatch (pinned=<optimized out>, s=2)
at /usr/src/sys/kern/kern_softint.c:871
#9 0xffffffff8011412f in Xsoftintr ()
kernel: NetBSD 7.0_STABLE
Any ideas what could be the problem?
See PR/40491. I don't think that the mutex there is correct. It seems
that in other places the nfs_reqq is protected with splsoftnet().