Date: Tue, 21 Apr 2009 11:11:57 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: RELENG_7 crash Message-ID: <200904211111.57295.jhb@freebsd.org> In-Reply-To: <200904210524.n3L5O9YS086865@lava.sentex.ca> References: <200904210524.n3L5O9YS086865@lava.sentex.ca>
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On Tuesday 21 April 2009 1:25:06 am Mike Tancsa wrote: > The box has a fairly heavy UDP load. Its RELENG_7 as of today and > took 3hrs for it to dump core. > > Fatal trap 12: page fault while in kernel mode > cpuid = 1; apic id = 01 > fault virtual address = 0x68 > fault code = supervisor read, page not present > instruction pointer = 0x20:0xc0637146 > stack pointer = 0x28:0xe766eaac > frame pointer = 0x28:0xe766eb54 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 761 (bsnmpd) > trap number = 12 > panic: page fault > cpuid = 1 > Uptime: 3h47m43s > Physical memory: 2036 MB > Dumping 83 MB: 68 52 36 20 4 > > (kgdb) bt > #0 doadump () at pcpu.h:196 > #1 0xc05964d7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418 > #2 0xc05967a9 in panic (fmt=Variable "fmt" is not available. > ) at /usr/src/sys/kern/kern_shutdown.c:574 > #3 0xc07f64ac in trap_fatal (frame=0xe766ea6c, eva=104) at > /usr/src/sys/i386/i386/trap.c:939 > #4 0xc07f6730 in trap_pfault (frame=0xe766ea6c, usermode=0, eva=104) > at /usr/src/sys/i386/i386/trap.c:852 > #5 0xc07f70dc in trap (frame=0xe766ea6c) at /usr/src/sys/i386/i386/trap.c:530 > #6 0xc07db7eb in calltrap () at /usr/src/sys/i386/i386/exception.s:159 > #7 0xc0637146 in sysctl_ifdata (oidp=0xc08816a0, arg1=0xe766ec24, > arg2=2, req=0xe766eba4) at /usr/src/sys/net/if_mib.c:127 > #8 0xc059fd77 in sysctl_root (oidp=Variable "oidp" is not available. > ) at /usr/src/sys/kern/kern_sysctl.c:1413 > #9 0xc059ff14 in userland_sysctl (td=0xc5374460, name=0xe766ec14, > namelen=6, old=0x0, oldlenp=0xbfbf8478, inkernel=0, new=0x0, > newlen=0, retval=0xe766ec10, flags=0) at > /usr/src/sys/kern/kern_sysctl.c:1506 > #10 0xc05a0064 in __sysctl (td=0xc5374460, uap=0xe766ecfc) at > /usr/src/sys/kern/kern_sysctl.c:1443 > #11 0xc07f6a85 in syscall (frame=0xe766ed38) at > /usr/src/sys/i386/i386/trap.c:1090 > #12 0xc07db850 in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:255 > #13 0x00000033 in ?? () > Previous frame inner to this frame (corrupt stack?) > (kgdb) Can you do 'frame 7' followed by 'l', 'p ifp', and 'p ifp->if_snd'? -- John Baldwin
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