4.11 panic, help decode gdb output
Charles Sprickman
spork at bway.net
Thu May 26 14:21:29 PDT 2005
Hi,
I had a 4.11 box panic today. Followed the example at
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-gdb.html
to get the following info:
FreeBSD miko.bway.net 4.11-RELEASE-p2 FreeBSD 4.11-RELEASE-p2 #6: Tue Apr
5 16:49:50 EDT 2005 spork at miko.bway.net:/usr/obj/usr/src/sys/MIKO
i386
root at miko[/usr/obj/usr/src/sys/MIKO]# gdb -k kernel.debug
/var/crash/vmcore.0
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This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read
called at
/usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
line 2627 in elfstab_build_psymtabs
Deprecated bfd_read called at
/usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
line 933 in fill_symbuf
IdlePTD at physical address 0x003de000
initial pcb at physical address 0x0033c6c0
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xf53958
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0263384
stack pointer = 0x10:0xd70e6d24
frame pointer = 0x10:0xd70e6d38
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 = 307 (mysqld)
interrupt mask = none
trap number = 12
panic: page fault
syncing disks...
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xabc694
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01c1aaf
stack pointer = 0x10:0xd70e6bcc
frame pointer = 0x10:0xd70e6be8
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 = 307 (mysqld)
interrupt mask = none
trap number = 12
panic: page fault
Uptime: 49d17h48m22s
dumping to dev #ad/0x20001, offset 1048736
dump ata0: resetting devices .. done
511 510 509 508 507 506 505 504 503 502 501 500 499 498 497 496 495 494
[snip]
8 7 6 5 4 3 2 1 0 y 18 14:38:56.279 EDT: %LINK-3-UPDOWN: Interface
Serial1/0, changed state to up <<-- ODD, a syslog message here???
---
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
487 if (dumping++) {
(kgdb) list *0xc01c1aaf
0xc01c1aaf is in vfs_msync (/usr/src/sys/kern/vfs_subr.c:2710).
warning: Source file is more recent than executable.
2705 int tries;
2706
2707 tries = 5;
2708 simple_lock(&mntvnode_slock);
2709 loop:
2710 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist); vp != NULL; vp
= nvp) {
2711 if (vp->v_mount != mp) {
2712 if (--tries > 0)
2713 goto loop;
2714 break;
(kgdb) backtrace
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc0191c07 in boot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:316
#2 0xc019202c in poweroff_wait (junk=0xc02fd5cc, howto=-1070608177)
at /usr/src/sys/kern/kern_shutdown.c:595
#3 0xc02abe6e in trap_fatal (frame=0xd70e6b8c, eva=11257492)
at /usr/src/sys/i386/i386/trap.c:974
#4 0xc02abb41 in trap_pfault (frame=0xd70e6b8c, usermode=0, eva=11257492)
at /usr/src/sys/i386/i386/trap.c:867
#5 0xc02ab72b in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = 11257472, tf_esi = 5, tf_ebp = -686920728, tf_isp =
-686920776,
tf_ebx = 11257472, tf_edx = 0, tf_ecx = -1070252352,
tf_eax = -1041269760, tf_trapno = 12, tf_err = 0, tf_eip =
-1071899985,
tf_cs = 8, tf_eflags = 66050, tf_esp = -1041269760, tf_ss = 0})
at /usr/src/sys/i386/i386/trap.c:466
#6 0xc01c1aaf in vfs_msync (mp=0xc1ef7c00, flags=2)
at /usr/src/sys/kern/vfs_subr.c:2710
#7 0xc01c2a88 in sync (p=0xc0353ec0, uap=0x0)
at /usr/src/sys/kern/vfs_syscalls.c:582
#8 0xc01919ca in boot (howto=256) at
/usr/src/sys/kern/kern_shutdown.c:235
#9 0xc019202c in poweroff_wait (junk=0xc02fd5cc, howto=-1070608177)
at /usr/src/sys/kern/kern_shutdown.c:595
#10 0xc02abe6e in trap_fatal (frame=0xd70e6ce4, eva=16071000)
at /usr/src/sys/i386/i386/trap.c:974
#11 0xc02abb41 in trap_pfault (frame=0xd70e6ce4, usermode=0, eva=16071000)
at /usr/src/sys/i386/i386/trap.c:867
#12 0xc02ab72b in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = -685923648, tf_esi = -686920296, tf_ebp = -686920392,
tf_isp = -686920432, tf_ebx = -1036461056, tf_edx = -685923648,
tf_ecx = 34, tf_eax = 16070656, tf_trapno = 12, tf_err = 0,
tf_eip = -1071238268, tf_cs = 8, tf_eflags = 66050,
tf_esp = -1041196288, tf_ss = -685923648})
at /usr/src/sys/i386/i386/trap.c:466
#13 0xc0263384 in ufs_getattr (ap=0xd70e6d68)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:408
#14 0xc0265985 in ufs_vnoperate (ap=0xd70e6d68)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:2376
#15 0xc020a9cb in nqsrv_getlease (vp=0xd71da2c0, duration=0xd70e6e24,
flags=6,
slp=0xffffffff, procp=0xd700b220, nam=0x0, cachablep=0xd70e6e28,
frev=0xd70e6e2c, cred=0xc1ff2200) at vnode_if.h:276
#16 0xc020ae24 in nqnfs_vop_lease_check (ap=0xd70e6e64)
at /usr/src/sys/nfs/nfs_nqlease.c:366
#17 0xc01bd945 in vop_defaultop (ap=0xd70e6e64)
at /usr/src/sys/kern/vfs_default.c:152
#18 0xc0265985 in ufs_vnoperate (ap=0xd70e6e64)
at /usr/src/sys/ufs/ufs/ufs_vnops.c:2376
#19 0xc01c7763 in vn_write (fp=0xc2068200, uio=0xd70e6ed4,
cred=0xc1ff2200,
---Type <return> to continue, or q <return> to quit---
flags=0, p=0xd700b220) at vnode_if.h:392
#20 0xc01a100d in dofilewrite (p=0xd700b220, fp=0xc2068200, fd=14,
buf=0xa449000, nbyte=118, offset=-1, flags=0)
at /usr/src/sys/sys/file.h:163
#21 0xc01a0ec4 in write (p=0xd700b220, uap=0xd70e6f80)
at /usr/src/sys/kern/sys_generic.c:329
#22 0xc02ac11d in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 172265472, tf_esi = 118, tf_ebp = -1103103308,
tf_isp = -686919724, tf_ebx = 676124848, tf_edx = -1103102944,
tf_ecx = 172265472, tf_eax = 4, tf_trapno = 7, tf_err = 2,
tf_eip = 676932060, tf_cs = 31, tf_eflags = 663, tf_esp =
-1103103368,
tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1175
#23 0xc02a0435 in Xint0x80_syscall ()
#24 0x82a9d10 in ?? ()
#25 0x82abbcf in ?? ()
#26 0x81028cc in ?? ()
#27 0x8103cad in ?? ()
#28 0x284c420b in ?? ()
(kgdb) quit
>From what I remember about reading this stuff, this does not seem like
hardware.
What's next?
Thanks,
Charles
___
Charles Sprickman
NetEng/SysAdmin
Bway.net - New York's Best Internet - www.bway.net
spork at bway.net - 212.655.9344
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