RELENG_7 crash

Mikolaj Golub at
Tue Apr 21 20:53:07 UTC 2009

On Tue, 21 Apr 2009 01:25:06 -0400 Mike Tancsa wrote:

 MT> The box has a fairly heavy UDP load.  Its RELENG_7 as of today and
 MT> took 3hrs for it to dump core.

 MT> Fatal trap 12: page fault while in kernel mode
 MT> cpuid = 1; apic id = 01
 MT> fault virtual address   = 0x68
 MT> fault code              = supervisor read, page not present
 MT> instruction pointer     = 0x20:0xc0637146
 MT> stack pointer           = 0x28:0xe766eaac
 MT> frame pointer           = 0x28:0xe766eb54
 MT> code segment            = base 0x0, limit 0xfffff, type 0x1b
 MT>                         = DPL 0, pres 1, def32 1, gran 1
 MT> processor eflags        = interrupt enabled, resume, IOPL = 0
 MT> current process         = 761 (bsnmpd)
 MT> trap number             = 12
 MT> panic: page fault
 MT> cpuid = 1
 MT> Uptime: 3h47m43s
 MT> Physical memory: 2036 MB
 MT> Dumping 83 MB: 68 52 36 20 4

 MT> (kgdb) bt
 MT> #0  doadump () at pcpu.h:196
 MT> #1  0xc05964d7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
 MT> #2  0xc05967a9 in panic (fmt=Variable "fmt" is not available.
 MT> ) at /usr/src/sys/kern/kern_shutdown.c:574
 MT> #3  0xc07f64ac in trap_fatal (frame=0xe766ea6c, eva=104) at
 MT> /usr/src/sys/i386/i386/trap.c:939
 MT> #4  0xc07f6730 in trap_pfault (frame=0xe766ea6c, usermode=0, eva=104)
 MT> at /usr/src/sys/i386/i386/trap.c:852
 MT> #5  0xc07f70dc in trap (frame=0xe766ea6c) at /usr/src/sys/i386/i386/trap.c:530
 MT> #6  0xc07db7eb in calltrap () at /usr/src/sys/i386/i386/exception.s:159
 MT> #7  0xc0637146 in sysctl_ifdata (oidp=0xc08816a0, arg1=0xe766ec24,
 MT> arg2=2, req=0xe766eba4) at /usr/src/sys/net/if_mib.c:127
 MT> #8  0xc059fd77 in sysctl_root (oidp=Variable "oidp" is not available.
 MT> ) at /usr/src/sys/kern/kern_sysctl.c:1413
 MT> #9  0xc059ff14 in userland_sysctl (td=0xc5374460, name=0xe766ec14,
 MT> namelen=6, old=0x0, oldlenp=0xbfbf8478, inkernel=0, new=0x0,
 MT>     newlen=0, retval=0xe766ec10, flags=0) at
 MT> /usr/src/sys/kern/kern_sysctl.c:1506
 MT> #10 0xc05a0064 in __sysctl (td=0xc5374460, uap=0xe766ecfc) at
 MT> /usr/src/sys/kern/kern_sysctl.c:1443
 MT> #11 0xc07f6a85 in syscall (frame=0xe766ed38) at
 MT> /usr/src/sys/i386/i386/trap.c:1090
 MT> #12 0xc07db850 in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:255
 MT> #13 0x00000033 in ?? ()
 MT> Previous frame inner to this frame (corrupt stack?)
 MT> (kgdb)

Just FYI, the same problem has already been registered in pr database as kern/132734.

Mikolaj Golub

More information about the freebsd-stable mailing list