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kern/49459: netbsd-7 crashes in network code



>Number:         49459
>Category:       kern
>Synopsis:       netbsd-7 crashes in network code
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Dec 08 18:55:00 +0000 2014
>Originator:     Uwe Toenjes
>Release:        NetBSD 7.0_BETA
>Organization:
University of Leipzig
>Environment:
NetBSD gate.ipv6.uni-leipzig.de 7.0_BETA NetBSD 7.0_BETA (MYCONF7) #1: Tue Oct 21 22:07:17 CEST 2014  root%gate.ipv6.uni-leipzig.de@localhost:/usr/obj/sys/arch/amd64/compile/MYCONF7 amd64
>Description:
hello,

 We run a router with a 7-netbsd kernel. It happens from time to time that the kernel crashes. Sometimes after a day, sometimes after a month. The kernel dump always looks similar.

 Unfortunately I cannot send outputs of debug kernels as the debug code has an error (http://mail-index.netbsd.org/netbsd-bugs/2014/10/27/msg038819.html).


fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff0000ac7f cs 8 rflags 10282 cr2 ffffffff0000ac7f ilevel 8 rsp fffffe813a5fac60
curlwp 0xfffffe882df26840 pid 0.2 lowest kstack 0xfffffe813a5f72c0
panic: trap
cpu0: Begin traceback...
vpanic() at netbsd:vpanic+0x13c
snprintf() at netbsd:snprintf
startlwp() at netbsd:startlwp
alltraps() at netbsd:alltraps+0x9e
ixgbe_txeof() at netbsd:ixgbe_txeof+0x15d
ixgbe_legacy_irq() at netbsd:ixgbe_legacy_irq+0x85
intr_biglock_wrapper() at netbsd:intr_biglock_wrapper+0x19
Xintr_ioapic_level4() at netbsd:Xintr_ioapic_level4+0xf2
--- interrupt ---
x86_mwait() at netbsd:x86_mwait+0xd
acpicpu_cstate_idle_enter() at netbsd:acpicpu_cstate_idle_enter+0xc2
acpicpu_cstate_idle() at netbsd:acpicpu_cstate_idle+0xb6
idle_loop() at netbsd:idle_loop+0x186
cpu0: End traceback...

dumping to dev 4,1 (offset=4589220, size=8388067):
dump

It would be great if anyone can fix the problem.
>How-To-Repeat:

>Fix:



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