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

Fri Sep 20 02:40:04 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: Fri, 20 Sep 2013 14:37:31 +1200

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 Same bug, but with rebuilt setup. Changed my root from ufs to zfs. Went
 from i368 to amd62. My kernel is
 https://svn0.us-west.freebsd.org/base/releng/9.1

 Got exactly similar message.

 Sep 20 14:31:59 bmach kernel: Fatal trap 12: page fault while in kernel m=
 ode
 Sep 20 14:31:59 bmach kernel: cpuid =3D 0; apic id =3D 00
 Sep 20 14:31:59 bmach kernel: fault virtual address	=3D 0x10
 Sep 20 14:31:59 bmach kernel: fault code		=3D supervisor read data, page
 not present
 Sep 20 14:31:59 bmach kernel: instruction pointer	=3D 0x20:0xffffffff8174=
 f8b8
 Sep 20 14:31:59 bmach kernel: stack pointer	        =3D
 0x28:0xffffff81193bf380
 Sep 20 14:31:59 bmach kernel: frame pointer	        =3D
 0x28:0xffffff81193bf390
 Sep 20 14:31:59 bmach kernel: code segment		=3D base 0x0, limit 0xfffff,
 type 0x1b
 Sep 20 14:31:59 bmach kernel: =3D DPL 0, pres 1, long 1, def32 0, gran 1
 Sep 20 14:31:59 bmach kernel: processor eflags	=3D interrupt enabled,
 resume, IOPL =3D 0
 Sep 20 14:31:59 bmach kernel: current process		=3D 2128 (named)
 Sep 20 14:31:59 bmach kernel: trap number		=3D 12
 Sep 20 14:31:59 bmach kernel: panic: page fault
 Sep 20 14:31:59 bmach kernel: cpuid =3D 0
 Sep 20 14:31:59 bmach kernel: KDB: stack backtrace:
 Sep 20 14:31:59 bmach kernel: #0 0xffffffff8092a076 at kdb_backtrace+0x66=

 Sep 20 14:31:59 bmach kernel: #1 0xffffffff808f41cd at panic+0x1cd
 Sep 20 14:31:59 bmach kernel: #2 0xffffffff80be8350 at trap_fatal+0x290
 Sep 20 14:31:59 bmach kernel: #3 0xffffffff80be868d at trap_pfault+0x1ed
 Sep 20 14:31:59 bmach kernel: #4 0xffffffff80be8cae at trap+0x3ce
 Sep 20 14:31:59 bmach kernel: #5 0xffffffff80bd32bf at calltrap+0x8
 Sep 20 14:31:59 bmach kernel: #6 0xffffffff81759e6f at pf_test_rule+0xf3f=

 Sep 20 14:31:59 bmach kernel: #7 0xffffffff8175d644 at pf_test+0xe34
 Sep 20 14:31:59 bmach kernel: #8 0xffffffff817651c1 at pf_check_out+0x41
 Sep 20 14:31:59 bmach kernel: #9 0xffffffff809b800e at pfil_run_hooks+0x9=
 e
 Sep 20 14:31:59 bmach kernel: #10 0xffffffff80a14806 at ip_output+0x416
 Sep 20 14:31:59 bmach kernel: #11 0xffffffff80a91909 at udp_send+0x509
 Sep 20 14:31:59 bmach kernel: #12 0xffffffff8095ec67 at sosend_dgram+0x2d=
 7
 Sep 20 14:31:59 bmach kernel: #13 0xffffffff80962f53 at kern_sendit+0x1a3=

 Sep 20 14:31:59 bmach kernel: #14 0xffffffff809631ec at sendit+0xdc
 Sep 20 14:31:59 bmach kernel: #15 0xffffffff80963277 at sys_sendmsg+0x87
 Sep 20 14:31:59 bmach kernel: #16 0xffffffff80be7bf6 at amd64_syscall+0x5=
 46
 Sep 20 14:31:59 bmach kernel: #17 0xffffffff80bd35a7 at Xfast_syscall+0xf=
 7
 Sep 20 14:31:59 bmach kernel: Uptime: 6h24m26s

 My kernel is an exact copy of GENERIC + these additions:

 options         MROUTING                # Multicast routing

 # ALTQ
 options         ALTQ
 options         ALTQ_CBQ        # Class Bases Queuing (CBQ)
 options         ALTQ_RED        # Random Early Detection (RED)
 options         ALTQ_RIO        # RED In/Out
 options         ALTQ_HFSC       # Hierarchical Packet Scheduler (HFSC)
 options         ALTQ_CDNR
 options         ALTQ_PRIQ       # Priority Queuing (PRIQ)
 #options         ALTQ_NOPCC      # Required if the TSC is unusable

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