RELENG_8 panic

[Mike Tancsa]

The box is a moderately busy LNS running mpd5.  I have another box 
running the same load that has not crashed so I am wondering if its 
hardware or this box is just "lucky" ?


Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x1378af
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc5ba1190
stack pointer           = 0x28:0xe79b784c
frame pointer           = 0x28:0xe79b7864
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         = 33060 (mpd5)
trap number             = 12
panic: page fault
cpuid = 1
Uptime: 2d4h49m17s
Physical memory: 2036 MB
Dumping 228 MB:panic: bufwrite: buffer is not busy???
cpuid = 1
  213 197 181 165 149 133 117 101 85 69 53 37 21 5


(kgdb) #0  doadump () at pcpu.h:231
#1  0xc06b0ac3 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:416
#2  0xc06b0d29 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:590
#3  0xc092239c in trap_fatal (frame=0xe79b780c, eva=1276079)
     at /usr/src/sys/i386/i386/trap.c:938
#4  0xc0922620 in trap_pfault (frame=0xe79b780c, usermode=0, eva=1276079)
     at /usr/src/sys/i386/i386/trap.c:851
#5  0xc0922f0c in trap (frame=0xe79b780c) at /usr/src/sys/i386/i386/trap.c:533
#6  0xc0904a9c in calltrap () at /usr/src/sys/i386/i386/exception.s:166
#7  0xc5ba1190 in ng_ID2noderef (ID=64998)
     at /usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:811
#8  0xc5ba192b in ng_path2noderef (here=0xc5f3f180,
     address=0xcac2a800 "[fde6]:", destp=0xe79b7ac0, lasthook=0xe79b7abc)
     at /usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:1679
#9  0xc5ba1d40 in ng_address_path (here=0xc5f3f180, item=0xc5c597c0,
     address=0xcac2a800 "[fde6]:", retaddr=0)
     at /usr/src/sys/modules/netgraph/netgraph/../../../netgraph/ng_base.c:3536
#10 0xc5b9c662 in ngc_send (so=0xc56e380c, flags=0, m=0xcaee6800,
     addr=0xca8baca0, control=0x0, td=0xc6298780)
     at /usr/src/sys/modules/netgraph/socket/../../../netgraph/ng_socket.c:296
#11 0xc07111aa in sosend_generic (so=0xc56e380c, addr=0xca8baca0,
     uio=0xe79b7be8, top=0xcaee6800, control=0x0, flags=0, td=0xc6298780)
     at /usr/src/sys/kern/uipc_socket.c:1260
#12 0xc070d40f in sosend (so=0xc56e380c, addr=0xca8baca0, uio=0xe79b7be8,
     top=0x0, control=0x0, flags=0, td=0xc6298780)
     at /usr/src/sys/kern/uipc_socket.c:1304
#13 0xc0714a47 in kern_sendit (td=0xc6298780, s=24, mp=0xe79b7c5c, flags=0,
     control=0x0, segflg=UIO_USERSPACE)
     at /usr/src/sys/kern/uipc_syscalls.c:788
#14 0xc0714c81 in sendit (td=0xc6298780, s=24, mp=0xe79b7c5c, flags=0)
     at /usr/src/sys/kern/uipc_syscalls.c:724
#15 0xc0714d98 in sendto (td=0xc6298780, uap=0xe79b7cf8)
     at /usr/src/sys/kern/uipc_syscalls.c:840
#16 0xc09228fa in syscall (frame=0xe79b7d38)
     at /usr/src/sys/i386/i386/trap.c:1111
#17 0xc0904b01 in Xint0x80_syscall ()
     at /usr/src/sys/i386/i386/exception.s:264
#18 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb)



	---Mike