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Running on Redhat AS 2.1, with a vanilla 2.4.22 kernel + the device mapper and opengfs. It looks like the oops happened while backupexec was trying to do a backup of the opengfs partition through the agent running on the machine. I ran it through ksymoops, but it did spit out errors (which I included). I haven't rebooted yet so if you want me to make any changes and boot with a new kernel and try again I can do that.
ksymoops 2.4.1 on i686 2.4.22-ogfs1. Options used
-v /boot/vmlinuz-2.4.22-ogfs1 (specified)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.22-ogfs1/ (default)
-m /boot/System.map-2.4.22-ogfs1 (default)
Error (pclose_local): read_nm_symbols pclose failed 0x100
Warning (read_vmlinux): no kernel symbols in vmlinux, is /boot/vmlinuz-2.4.22-ogfs1 a valid vmlinux file?
Error (expand_objects): cannot stat(/lib/cciss.o) for cciss
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/net/fc/fc.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/sound/sounddrivers.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/ide/raid/idedriver-raid.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/ide/ppc/idedriver-ppc.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/ide/legacy/idedriver-legacy.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/ide/arm/idedriver-arm.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/misc/misc.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/parport/driver.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/media/radio/radio.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/media/video/video.o
Warning (read_object): no symbols in /lib/modules/2.4.22-ogfs1/build/drivers/media/media.o
Warning (compare_maps): mismatch on symbol ogfs_debug_flags , ogfs says f89337e0, /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o says f8932c80. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o entry
Warning (compare_maps): mismatch on symbol ogfs_icdb_buf , ogfs says f8933820, /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o says f8932cc0. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o entry
Warning (compare_maps): mismatch on symbol ogfs_icdb_lock , ogfs says f8a33820, /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o says f8a32cc0. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o entry
Warning (compare_maps): mismatch on symbol ogfs_mount_args_lock , ogfs says f8a33838, /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o says f8a32cd8. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o entry
Warning (compare_maps): mismatch on symbol ogfs_random_number , ogfs says f8a33834, /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o says f8a32cd4. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/ogfs.o entry
Warning (compare_maps): mismatch on symbol ip_mep , memexp says f88f2da4, /lib/modules/2.4.22-ogfs1/ogfs/memexp.o says f88f2bc0. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/memexp.o entry
Warning (compare_maps): mismatch on symbol scsi_mep , memexp says f88f2da8, /lib/modules/2.4.22-ogfs1/ogfs/memexp.o says f88f2bc4. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/memexp.o entry
Warning (compare_maps): mismatch on symbol pools , pool says f88ddd20, /lib/modules/2.4.22-ogfs1/ogfs/pool.o says f88ddcc0. Ignoring /lib/modules/2.4.22-ogfs1/ogfs/pool.o entry
Warning (compare_maps): mismatch on symbol md_size , md says f887cec0, /lib/modules/2.4.22-ogfs1/kernel/drivers/md/md.o says f887cc80. Ignoring /lib/modules/2.4.22-ogfs1/kernel/drivers/md/md.o entry
Warning (compare_maps): mismatch on symbol mddev_map , md says f887c6c0, /lib/modules/2.4.22-ogfs1/kernel/drivers/md/md.o says f887c480. Ignoring /lib/modules/2.4.22-ogfs1/kernel/drivers/md/md.o entry
Warning (map_ksym_to_module): cannot match loaded module cciss to a unique module object. Trace may not be reliable.
Unable to handle kernel NULL pointer dereference at virtual address 00000020
f891e1d3
*pde = 00000000
Oops: 0000
CPU: 1
EIP: 0010:[<f891e1d3>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010213
eax: ffffe000 ebx: 7fffffff ecx: 00000000 edx: 0000007d
esi: f06fb1e0 edi: f4733400 ebp: 00000000 esp: dc8d1eb0
ds: 0018 es: 0018 ss: 0018
Process agent.be (pid: 4959, stackpage=dc8d1000)
Stack: 08063e54 00000000 0000000c 00000000 00000000 00000001 f5b89a84 00000000
00000000 00000000 f5b89a60 f5ae7300 f8b28000 03000000 ffffffff 7fffffff
00000000 00000000 dc8d1f0c f73e9e60 00000000 00000000 00000006 f88f89ff
Call Trace: [<f88f89ff>] [<c0151561>] [<c023202d>] [<c013d6cd>] [<c013d73b>]
[<c0108c43>]
Code: 8b 51 20 21 e0 39 50 7c 0f 85 aa 01 00 00 0f be 54 24 37 0f
>>EIP; f891e1d3 <[ogfs]ogfs_plock_act+22f/4fc> <=====
Trace; f88f89ff <[ogfs]ogfs_lock_file+167/22c>
Trace; c0151561 <locks_remove_posix+b1/190>
Trace; c023202d <sys_recv+1d/30>
Trace; c013d6cd <filp_close+8d/a0>
Trace; c013d73b <sys_close+5b/70>
Trace; c0108c43 <system_call+33/38>
Code; f891e1d3 <[ogfs]ogfs_plock_act+22f/4fc>
00000000 <_EIP>:
Code; f891e1d3 <[ogfs]ogfs_plock_act+22f/4fc> <=====
0: 8b 51 20 mov 0x20(%ecx),%edx <=====
Code; f891e1d6 <[ogfs]ogfs_plock_act+232/4fc>
3: 21 e0 and %esp,%eax
Code; f891e1d8 <[ogfs]ogfs_plock_act+234/4fc>
5: 39 50 7c cmp %edx,0x7c(%eax)
Code; f891e1db <[ogfs]ogfs_plock_act+237/4fc>
8: 0f 85 aa 01 00 00 jne 1b8 <_EIP+0x1b8> f891e38b <[ogfs]ogfs_plock_act+3e7/4fc>
Code; f891e1e1 <[ogfs]ogfs_plock_act+23d/4fc>
e: 0f be 54 24 37 movsbl 0x37(%esp,1),%edx
Code; f891e1e6 <[ogfs]ogfs_plock_act+242/4fc>
13: 0f 00 00 sldt (%eax)
23 warnings and 2 errors issued. Results may not be reliable.