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Date:      Tue, 8 Oct 2013 22:50:01 GMT
From:      Berend de Boer <berend@pobox.com>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: kern/182557: Frequent reboots due to kernel trap happening in pf_test_rule
Message-ID:  <201310082250.r98Mo1uV017144@freefall.freebsd.org>

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The following reply was made to PR kern/182557; it has been noted by GNATS.

From: Berend de Boer <berend@pobox.com>
To: bug-followup@FreeBSD.org, berend@pobox.com
Cc:  
Subject: Re: kern/182557: Frequent reboots due to kernel trap happening in
 pf_test_rule
Date: Wed, 09 Oct 2013 11:43:40 +1300

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 Happens on 10-ALPHA5 as well:
 
 Oct  9 08:29:08 bmach kernel: Kernel page fault with the following
 non-sleepable locks held:
 Oct  9 08:29:08 bmach kernel: shared rw pf rulesets (pf rulesets) r =3D 0=
 
 (0xffffffff81d03ae8) locked @
 /usr/src/head/sys/modules/pf/../../netpfil/pf/pf.c:5660
 Oct  9 08:29:08 bmach kernel: shared rm PFil shared rmlock (PFil shared
 rmlock) r =3D 0 (0xffffffff8170cd00) locked @ /usr/src/head/sys/net/pfil.=
 c:77
 Oct  9 08:29:08 bmach kernel: shared rw udpinp (udpinp) r =3D 0
 (0xfffff80017affda8) locked @ /usr/src/head/sys/netinet/udp_usrreq.c:981
 Oct  9 08:29:08 bmach kernel: KDB: stack backtrace:
 Oct  9 08:29:08 bmach kernel: db_trace_self_wrapper() at
 db_trace_self_wrapper+0x2b/frame 0xfffffe011e9acb30
 Oct  9 08:29:08 bmach kernel: kdb_backtrace() at
 kdb_backtrace+0x39/frame 0xfffffe011e9acbe0
 Oct  9 08:29:08 bmach kernel: witness_warn() at witness_warn+0x4a8/frame
 0xfffffe011e9acca0
 Oct  9 08:29:08 bmach kernel: trap_pfault() at trap_pfault+0x5a/frame
 0xfffffe011e9acd40
 Oct  9 08:29:08 bmach kernel: trap() at trap+0x670/frame 0xfffffe011e9acf=
 60
 Oct  9 08:29:08 bmach kernel: calltrap() at calltrap+0x8/frame
 0xfffffe011e9acf60
 Oct  9 08:29:08 bmach kernel: --- trap 0xc, rip =3D 0xffffffff81ce1f6e,
 rsp =3D 0xfffffe011e9ad020, rbp =3D 0xfffffe011e9ad4f0 ---
 Oct  9 08:29:08 bmach kernel: pf_test_rule() at
 pf_test_rule+0x248e/frame 0xfffffe011e9ad4f0
 Oct  9 08:29:08 bmach kernel: pf_test() at pf_test+0x9c8/frame
 0xfffffe011e9ad690
 Oct  9 08:29:08 bmach kernel: pf_check_out() at pf_check_out+0x3c/frame
 0xfffffe011e9ad6c0
 Oct  9 08:29:08 bmach kernel: pfil_run_hooks() at
 pfil_run_hooks+0x93/frame 0xfffffe011e9ad750
 Oct  9 08:29:08 bmach kernel: ip_output() at ip_output+0x8c8/frame
 0xfffffe011e9ad840
 Oct  9 08:29:08 bmach kernel: udp_send() at udp_send+0x866/frame
 0xfffffe011e9ad900
 Oct  9 08:29:08 bmach kernel: sosend_dgram() at sosend_dgram+0x36b/frame
 0xfffffe011e9ad980
 Oct  9 08:29:08 bmach kernel: kern_sendit() at kern_sendit+0x207/frame
 0xfffffe011e9ada30
 Oct  9 08:29:08 bmach kernel: sendit() at sendit+0x116/frame
 0xfffffe011e9ada80
 Oct  9 08:29:08 bmach kernel: sys_sendmsg() at sys_sendmsg+0x61/frame
 0xfffffe011e9adae0
 Oct  9 08:29:08 bmach kernel: amd64_syscall() at
 amd64_syscall+0x265/frame 0xfffffe011e9adbf0
 Oct  9 08:29:08 bmach kernel: Xfast_syscall() at
 Xfast_syscall+0xfb/frame 0xfffffe011e9adbf0
 Oct  9 08:29:08 bmach kernel: --- syscall (28, FreeBSD ELF64,
 sys_sendmsg), rip =3D 0x80131769a, rsp =3D 0x7fffffbfd178, rbp =3D
 0x7fffffbfd1a0 ---
 Oct  9 08:29:08 bmach kernel:
 Oct  9 08:29:08 bmach kernel:
 Oct  9 08:29:08 bmach kernel: Fatal trap 12: page fault while in kernel m=
 ode
 Oct  9 08:29:08 bmach kernel: cpuid =3D 1; apic id =3D 01
 Oct  9 08:29:08 bmach kernel: fault virtual address	=3D 0x10
 Oct  9 08:29:08 bmach kernel: fault code		=3D supervisor read data, page
 not present
 Oct  9 08:29:08 bmach kernel: instruction pointer	=3D 0x20:0xffffffff81ce=
 1f6e
 Oct  9 08:29:08 bmach kernel: stack pointer	        =3D
 0x28:0xfffffe011e9ad020
 Oct  9 08:29:08 bmach kernel: frame pointer	        =3D
 0x28:0xfffffe011e9ad4f0
 Oct  9 08:29:11 bmach kernel: code segment		=3D base 0x0, limit 0xfffff,
 type 0x1b
 Oct  9 08:29:11 bmach kernel: =3D DPL 0, pres 1, long 1, def32 0, gran 1
 Oct  9 08:29:11 bmach kernel: processor eflags	=3D interrupt enabled,
 resume, IOPL =3D 0
 Oct  9 08:29:11 bmach kernel: current process		=3D 1082 (named)
 
 
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