Kernel core dump in recent 4.8-STABLE

[Mark Knight]

In message <200306232314.02175.dgw at liwest.at>, Daniela <dgw at liwest.at>
writes
>Today my system coredumped (4.8-STABLE from Saturday), I believe it's somehow
>X11 related:

I just updated my system to RELENG_4 from Tuesday morning, and saw a
crash as X started.  Unfortunately, It was a remote restart, so I had to
win a race to move xdm out of the way before the system crashed ;)

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xb0
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc1abe290
stack pointer           = 0x10:0xd360ed40
frame pointer           = 0x10:0xd360ed6c
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 3
current process         = 289 (XFree86)
interrupt mask          = none
trap number             = 12
panic: page fault

(kgdb) bt
#0  dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1  0xc0185a3c in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
#2  0xc0185e70 in poweroff_wait (junk=0xc02f610c, howto=-1070638065)
    at /usr/src/sys/kern/kern_shutdown.c:595
#3  0xc02a9e53 in trap_fatal (frame=0xd360ed00, eva=176)
    at /usr/src/sys/i386/i386/trap.c:974
#4  0xc02a9b0d in trap_pfault (frame=0xd360ed00, usermode=0, eva=176)
    at /usr/src/sys/i386/i386/trap.c:867
#5  0xc02a96e3 in trap (frame={tf_fs = -1045757936, tf_es = -748683248,
      tf_ds = -1045692400, tf_edi = 0, tf_esi = -1045415936,
      tf_ebp = -748622484, tf_isp = -748622548, tf_ebx = 0,
      tf_edx = 143587328, tf_ecx = -1047585952, tf_eax = -1045421312,
      tf_trapno = 12, tf_err = 0, tf_eip = -1045699952, tf_cs = 8,
      tf_eflags = 78470, tf_esp = -1045733376, tf_ss = -1045660664})
    at /usr/src/sys/i386/i386/trap.c:466
#6  0xc1abe290 in ?? ()
#7  0xc1abfa88 in ?? ()
#8  0xc01bfc3c in spec_ioctl (ap=0xd360edf0)
    at /usr/src/sys/miscfs/specfs/spec_vnops.c:306
#9  0xc01bf94d in spec_vnoperate (ap=0xd360edf0)
    at /usr/src/sys/miscfs/specfs/spec_vnops.c:119
#10 0xc0241b09 in ufs_vnoperatespec (ap=0xd360edf0)
    at /usr/src/sys/ufs/ufs/ufs_vnops.c:2394
#11 0xc01bc0af in vn_ioctl (fp=0xc1a52b80, com=3222037529,
    data=0xd360eeb4 "\200", p=0xd3596a80) at vnode_if.h:429
#12 0xc01956da in ioctl (p=0xd3596a80, uap=0xd360ef80)
    at /usr/src/sys/sys/file.h:178
#13 0xc02aa0b9 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
      tf_edi = 143392256, tf_esi = 143392256, tf_ebp = -1077937296,
      tf_isp = -748621868, tf_ebx = 7, tf_edx = 0, tf_ecx = 0, tf_eax = 54,
      tf_trapno = 12, tf_err = 2, tf_eip = 673282704, tf_cs = 31,
      tf_eflags = 12947, tf_esp = -1077937340, tf_ss = 47})
    at /usr/src/sys/i386/i386/trap.c:1175
#14 0xc029db75 in Xint0x80_syscall ()
#15 0x8500f0b in ?? ()
#16 0x879ec43 in ?? ()
#17 0x879f325 in ?? ()
#18 0x8781e0d in ?? ()
#19 0x80bfd46 in ?? ()
#20 0x806c1ad in ?? ()
#21 0x80bf3be in ?? ()
#22 0x806b21a in ?? ()
(kgdb)

Cheers,
-- 
Mark A. R. Knight                               finger: markk at knigma.org
Tel: +44 7880 556751                            http://www.knigma.org/