misc/182141: Very frequent (at most 3 hours) kernel trap 12

Mon Sep 23 05:00:02 UTC 2013

The following reply was made to PR misc/182141; it has been noted by GNATS.

From: Berend de Boer <berend at pobox.com>
To: bug-followup at FreeBSD.org, berend at pobox.com
Cc:  
Subject: Re: misc/182141: Very frequent (at most 3 hours) kernel trap 12
Date: Mon, 23 Sep 2013 16:56:09 +1200

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 Have enabled:

 options         INVARIANTS
 options         INVARIANT_SUPPORT
 options         WITNESS
 options         DEBUG_MEMGUARD

 log dump is now:

 Sep 23 16:48:15 bmach syslogd: kernel boot file is /boot/kernel/kernel
 Sep 23 16:48:15 bmach kernel: Kernel page fault with the following
 non-sleepable locks held:
 Sep 23 16:48:15 bmach kernel: exclusive sleep mutex pf task mtx (pf task
 mtx) r =3D 0 (0xffffffff8190b7c0) locked @
 /usr/src/9.1/sys/modules/pf/../../contrib/pf/net/pf.c:6621
 Sep 23 16:48:15 bmach kernel: shared rm PFil hook read/write mutex (PFil
 hook read/write mutex) r =3D 0 (0xffffffff81419ee8) locked @
 /usr/src/9.1/sys/net/pfil.c:77
 Sep 23 16:48:15 bmach kernel: shared rw udpinp (udpinp) r =3D 0
 (0xfffffe008122d168) locked @ /usr/src/9.1/sys/netinet/udp_usrreq.c:975
 Sep 23 16:48:15 bmach kernel: KDB: stack backtrace:
 Sep 23 16:48:15 bmach kernel: #0 0xffffffff8090d386 at kdb_backtrace+0x66=

 Sep 23 16:48:15 bmach kernel: #1 0xffffffff8092141e at
 _witness_debugger+0x2e
 Sep 23 16:48:15 bmach kernel: #2 0xffffffff80922206 at witness_warn+0x2c6=

 Sep 23 16:48:15 bmach kernel: #3 0xffffffff80bba27a at trap_pfault+0x6a
 Sep 23 16:48:15 bmach kernel: #4 0xffffffff80bbaa10 at trap+0x440
 Sep 23 16:48:15 bmach kernel: #5 0xffffffff80ba4cdf at calltrap+0x8
 Sep 23 16:48:15 bmach kernel: #6 0xffffffff818ec11f at pf_test_rule+0xf2f=

 Sep 23 16:48:15 bmach kernel: #7 0xffffffff818ef944 at pf_test+0xe74
 Sep 23 16:48:15 bmach kernel: #8 0xffffffff818f76f1 at pf_check_out+0x41
 Sep 23 16:48:15 bmach kernel: #9 0xffffffff8099b802 at pfil_run_hooks+0xd=
 2
 Sep 23 16:48:15 bmach kernel: #10 0xffffffff809f340f at ip_output+0x55f
 Sep 23 16:48:15 bmach kernel: #11 0xffffffff80a6c4c5 at udp_send+0x4d5
 Sep 23 16:48:15 bmach kernel: #12 0xffffffff80945a0e at sosend_dgram+0x21=
 e
 Sep 23 16:48:15 bmach kernel: #13 0xffffffff8094cd44 at kern_sendit+0x1b4=

 Sep 23 16:48:15 bmach kernel: #14 0xffffffff8094cfac at sendit+0xdc
 Sep 23 16:48:15 bmach kernel: #15 0xffffffff8094d037 at sys_sendmsg+0x87
 Sep 23 16:48:15 bmach kernel: #16 0xffffffff80bb979a at amd64_syscall+0x2=
 fa
 Sep 23 16:48:15 bmach kernel: #17 0xffffffff80ba4fc7 at Xfast_syscall+0xf=
 7
 Sep 23 16:48:15 bmach kernel:
 Sep 23 16:48:15 bmach kernel:
 Sep 23 16:48:15 bmach kernel: Fatal trap 12: page fault while in kernel m=
 ode
 Sep 23 16:48:15 bmach kernel: cpuid =3D 0; apic id =3D 00
 Sep 23 16:48:15 bmach kernel: fault virtual address	=3D 0x10
 Sep 23 16:48:15 bmach kernel: fault code		=3D supervisor read data, page
 not present
 Sep 23 16:48:15 bmach kernel: instruction pointer	=3D 0x20:0xffffffff818e=
 1888
 Sep 23 16:48:15 bmach kernel: stack pointer	        =3D
 0x28:0xffffff82fc485370
 Sep 23 16:48:15 bmach kernel: frame pointer	        =3D
 0x28:0xffffff82fc485380
 Sep 23 16:48:15 bmach kernel: code segment		=3D base 0x0, limit 0xfffff,
 type 0x1b
 Sep 23 16:48:15 bmach kernel: =3D DPL 0, pres 1, long 1, def32 0, gran 1
 Sep 23 16:48:15 bmach kernel: processor eflags	=3D interrupt enabled,
 resume, IOPL =3D 0
 Sep 23 16:48:15 bmach kernel: current process		=3D 2199 (named)
 Sep 23 16:48:15 bmach kernel: trap number		=3D 12
 Sep 23 16:48:15 bmach kernel: panic: page fault
 Sep 23 16:48:15 bmach kernel: cpuid =3D 0
 Sep 23 16:48:15 bmach kernel: KDB: stack backtrace:
 Sep 23 16:48:15 bmach kernel: #0 0xffffffff8090d386 at kdb_backtrace+0x66=

 Sep 23 16:48:15 bmach kernel: #1 0xffffffff808d6e68 at panic+0x1d8
 Sep 23 16:48:15 bmach kernel: #2 0xffffffff80bba0c0 at trap_fatal+0x290
 Sep 23 16:48:15 bmach kernel: #3 0xffffffff80bba28a at trap_pfault+0x7a
 Sep 23 16:48:15 bmach kernel: #4 0xffffffff80bbaa10 at trap+0x440
 Sep 23 16:48:15 bmach kernel: #5 0xffffffff80ba4cdf at calltrap+0x8
 Sep 23 16:48:15 bmach kernel: #6 0xffffffff818ec11f at pf_test_rule+0xf2f=

 Sep 23 16:48:15 bmach kernel: #7 0xffffffff818ef944 at pf_test+0xe74
 Sep 23 16:48:15 bmach kernel: #8 0xffffffff818f76f1 at pf_check_out+0x41
 Sep 23 16:48:15 bmach kernel: #9 0xffffffff8099b802 at pfil_run_hooks+0xd=
 2
 Sep 23 16:48:15 bmach kernel: #10 0xffffffff809f340f at ip_output+0x55f
 Sep 23 16:48:15 bmach kernel: #11 0xffffffff80a6c4c5 at udp_send+0x4d5
 Sep 23 16:48:15 bmach kernel: #12 0xffffffff80945a0e at sosend_dgram+0x21=
 e
 Sep 23 16:48:15 bmach kernel: #13 0xffffffff8094cd44 at kern_sendit+0x1b4=

 Sep 23 16:48:15 bmach kernel: #14 0xffffffff8094cfac at sendit+0xdc
 Sep 23 16:48:15 bmach kernel: #15 0xffffffff8094d037 at sys_sendmsg+0x87
 Sep 23 16:48:15 bmach kernel: #16 0xffffffff80bb979a at amd64_syscall+0x2=
 fa
 Sep 23 16:48:15 bmach kernel: #17 0xffffffff80ba4fc7 at Xfast_syscall+0xf=
 7
 Sep 23 16:48:15 bmach kernel: Uptime: 5h21m4s

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