Need help analyzing a 5.3-RELEASE-p2 crash

[Olafur Osvaldsson]

This is what I got, could someone help me with the next steps?

==================================================================

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 00
fault virtual address   = 0x413db14b
fault code              = supervisor write, page not present
instruction pointer     = 0x8:0xc06272e2
stack pointer           = 0x10:0xe75cd9bc
frame pointer           = 0x10:0xe75cd9c4
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         = 6535 (sshd)
trap number             = 12
panic: page fault

cpuid = 1
boot() called on cpu#1
Uptime: 12d6h22m21s
Dumping 1023 MB
 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256 272 288 304 320 336 352 368 384 400 416 432 448 464 480 496 512 528 544 560 576 592 608 624 640 656 672 688 704 720 736 752 768 784 800 816 832 848 864 880 896 912 928 944 960 976 992 1008

==================================================================

Backtrace:

#0  doadump () at pcpu.h:159
#1  0xc060560f in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:397
#2  0xc0605935 in panic (fmt=0xc07f164a "%s") at /usr/src/sys/kern/kern_shutdown.c:553
#3  0xc07a78c4 in trap_fatal (frame=0xe75cd97c, eva=1094562123)
    at /usr/src/sys/i386/i386/trap.c:809
#4  0xc07a7607 in trap_pfault (frame=0xe75cd97c, usermode=0, eva=1094562123)
    at /usr/src/sys/i386/i386/trap.c:727
#5  0xc07a7241 in trap (frame=
      {tf_fs = -413401064, tf_es = -1067515888, tf_ds = -413401072, tf_edi = -1033200280, tf_esi = 1103114931, tf_ebp = -413345340, tf_isp = -413345368, tf_ebx = -1033594764, tf_edx = 1094562119, tf_ecx = -1064546620, tf_eax = 0, tf_trapno = 12, tf_err = 2, tf_eip = -1067289886, tf_cs = 8, tf_eflags = 66054, tf_esp = -1033594880, tf_ss = -1031246336}) at /usr/src/sys/i386/i386/trap.c:417
#6  0xc079552a in calltrap () at /usr/src/sys/i386/i386/exception.s:140
#7  0xe75c0018 in ?? ()
#8  0xc05f0010 in fork1 (td=0xc2649874, flags=89, pages=-413345304, procp=0xc0633e91) at pcpu.h:159
#9  0xc0627236 in selwakeuppri (sip=0xc2649874, pri=89) at /usr/src/sys/kern/sys_generic.c:1096
#10 0xc0633e91 in ttwakeup (tp=0x10206) at /usr/src/sys/kern/tty.c:2366
#11 0xc0632b38 in ttymodem (tp=0xc2649800, flag=0) at /usr/src/sys/kern/tty.c:1625
#12 0xc0636823 in ptcopen (dev=0xc2886e00, flag=3, devtype=8192, td=0x0) at linedisc.h:136
#13 0xc05cda2e in spec_open (ap=0xe75cda84) at /usr/src/sys/fs/specfs/spec_vnops.c:207
#14 0xc05cd773 in spec_vnoperate (ap=0x0) at /usr/src/sys/fs/specfs/spec_vnops.c:118
#15 0xc0663861 in vn_open_cred (ndp=0xe75cdbe4, flagp=0xe75cdce4, cmode=0, cred=0xc2892180, 
    fdidx=0) at vnode_if.h:228
#16 0xc0663446 in vn_open (ndp=0x0, flagp=0xe75cdce4, cmode=0, fdidx=3)
    at /usr/src/sys/kern/vfs_vnops.c:91
#17 0xc065d55f in kern_open (td=0xc3074190, path=0x0, pathseg=UIO_USERSPACE, flags=3, mode=0)
    at /usr/src/sys/kern/vfs_syscalls.c:957
#18 0xc065d478 in open (td=0xc3074190, uap=0x0) at /usr/src/sys/kern/vfs_syscalls.c:926
#19 0xc07a7bcf in syscall (frame=
      {tf_fs = 47, tf_es = 134676527, tf_ds = -1078001617, tf_edi = -1077943125, tf_esi = 671947821, tf_ebp = -1077943096, tf_isp = -413344396, tf_ebx = 671955040, tf_edx = 671947836, tf_ecx = 674477548, tf_eax = 5, tf_trapno = 12, tf_err = 2, tf_eip = 673989911, tf_cs = 31, tf_eflags = 658, tf_esp = -1077943188, tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1001
#20 0xc079557f in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:201
#21 0x0000002f in ?? ()
#22 0x0807002f in ?? ()
#23 0xbfbf002f in ?? ()
#24 0xbfbfe4ab in ?? ()
#25 0x280d1c2d in ?? ()
#26 0xbfbfe4c8 in ?? ()
#27 0xe75cdd74 in ?? ()
#28 0x280d3860 in ?? ()
#29 0x280d1c3c in ?? ()
#30 0x2833b5ec in ?? ()
#31 0x00000005 in ?? ()
#32 0x0000000c in ?? ()
#33 0x00000002 in ?? ()
#34 0x282c4517 in ?? ()
#35 0x0000001f in ?? ()
#36 0x00000292 in ?? ()
#37 0xbfbfe46c in ?? ()
#38 0x0000002f in ?? ()
#39 0x73652528 in ?? ()
#40 0x090a2970 in ?? ()
#41 0x6c6c6163 in ?? ()
#42 0x67657209 in ?? ()
#43 0x1fc83000 in ?? ()
#44 0xc307254c in ?? ()
#45 0xc3074190 in ?? ()
#46 0xe75cdb00 in ?? ()
#47 0xe75cdae8 in ?? ()
#48 0xc22644b0 in ?? ()
#49 0xc0615c17 in sched_switch (td=0x280d1c2d, newtd=0x280d3860, flags=Cannot access memory at address 0xbfbfe4d8
)
    at /usr/src/sys/kern/sched_4bsd.c:865

-- 
Ólafur Osvaldsson
Kerfisstjóri
Internet á Íslandi hf.
Sími:  525-5291
Email: oli at isnic.is