OOPS in 2.4.3-12 and 2.4.8

DISCUSSION Diego Santa Cruz 1 participant 1 message Aug 15, 2001

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Diego Santa Cruz

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2001-08-15 09:36 UTC #0 lore raw

Hi,

I have experienced an OOPS while unloading the cdrom module. My system is an HP Omnibook 4150 laptop. I booted the standard 2.4.3-12 kernel of RedHat 7.1 without having the CDROM drive inserted. If I load the cdrom and ide-cd modules (which are sometimes automatically loaded) and then unload them I get an OOPS right after unloading cdrom. The bug is reproducible. I have also tried 2.4.8 (official kernel this time) and the problem also occurs (I can check for sure where and provide ksymoops output if necessary).

Kernel command line: auto BOOT_IMAGE=rh-7.1 ro root=301 BOOT_FILE=/boot/vmlinuz-2.4.3-12

The oops analysis by ksymoops on kernel 2.4.3-12 gives:

ksymoops 2.4.0 on i686 2.4.3-12. Options used

     -v /boot/vmlinux-2.4.3-12 (specified)
     -k /home/sun1/dsanta/ksyms (specified)
     -l /home/sun1/dsanta/modules (specified)
     -o /lib/modules/2.4.3-12/ (specified)
     -m /boot/System.map-2.4.3-12 (specified)

Warning (compare_maps): mismatch on symbol partition_name , ksyms_base says c01af700, vmlinux says c0151680. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol proc_irda , irda says d09358fc, /lib/modules/2.4.3-12/kernel/net/irda/irda.o says d0934f3c. Ignoring /lib/modules/2.4.3-12/kernel/net/irda/irda.o entry
Warning (compare_maps): mismatch on symbol nlmsvc_grace_period , lockd says d08f7994, /lib/modules/2.4.3-12/kernel/fs/lockd/lockd.o says d08f6e00. Ignoring /lib/modules/2.4.3-12/kernel/fs/lockd/lockd.o entry
Warning (compare_maps): mismatch on symbol nlmsvc_ops , lockd says d08f7990, /lib/modules/2.4.3-12/kernel/fs/lockd/lockd.o says d08f6dfc. Ignoring /lib/modules/2.4.3-12/kernel/fs/lockd/lockd.o entry
Warning (compare_maps): mismatch on symbol nlmsvc_timeout , lockd says d08f7998, /lib/modules/2.4.3-12/kernel/fs/lockd/lockd.o says d08f6e04. Ignoring /lib/modules/2.4.3-12/kernel/fs/lockd/lockd.o entry
Warning (compare_maps): mismatch on symbol nfs_debug , sunrpc says d08c7120, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6de0. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol nfsd_debug , sunrpc says d08c7124, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6de4. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol nlm_debug , sunrpc says d08c7128, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6de8. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol rpc_debug , sunrpc says d08c711c, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6ddc. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol rpc_garbage_args , sunrpc says d08c70fc, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6dbc. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol rpc_success , sunrpc says d08c70ec, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6dac. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol rpc_system_err , sunrpc says d08c7100, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6dc0. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol xdr_one , sunrpc says d08c70e4, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6da4. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol xdr_two , sunrpc says d08c70e8, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6da8. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol xdr_zero , sunrpc says d08c70e0, /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o says d08c6da0. Ignoring /lib/modules/2.4.3-12/kernel/net/sunrpc/sunrpc.o entry
Warning (compare_maps): mismatch on symbol usb_devfs_handle , usbcore says d084dc80, /lib/modules/2.4.3-12/kernel/drivers/usb/usbcore.o says d084d7a0. Ignoring /lib/modules/2.4.3-12/kernel/drivers/usb/usbcore.o entry

Unable to handle kernel NULL pointer dereference at virtual address 00000008
c011a345
Oops: 0000
CPU:    0
EIP:    0010:[<c011a345>]

Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00210246
eax: 00000000 ebx: 00000000 ecx: 00000000 edx: 00000000
esi: c19cd000 edi: 00000000 ebp: 00000000 esp: cbf63f7c
ds: 0018 es: 0018 ss: 0018
Process rmmod (pid: 2171, stackpage=cbf63000)

Stack: d08aa000 d08ae5bb 00000000 d08ae5fa 00000000 d08b0240 c011792e d08aa000 
       c19cd000 00000000 c0116e19 d08aa000 00000000 cbf62000 bffff6b5 00000001 
       bfffe458 c0106d2b bffff6b5 0805f168 00000131 bffff6b5 00000001 bfffe458 
Call Trace: [<d08aa000>] [<d08ae5bb>] [<d08ae5fa>] [<d08b0240>] [<c011792e>] 
   [<d08aa000>] [<c0116e19>] [<d08aa000>] [<c0106d2b>] 
Code: 8b 53 08 8b 43 04 89 50 04 89 02 8b 0d 94 5c 2a c0 51 8b 13

Quoted 1 line

Quoted 1 line
EIP; c011a345 <unregister_sysctl_table+5/30> <=====

Trace; d08aa000 <[serial_cs].data.end+4021/4081> Trace; d08ae5bb <[cdrom]cdrom_sysctl_unregister+b/10> Trace; d08ae5fa <[cdrom]cdrom_exit+1a/1f> Trace; d08b0240 <[cdrom].rodata.start+1a20/1a5f> Trace; c011792e <free_module+1e/d0>
Trace; d08aa000 <[serial_cs].data.end+4021/4081> Trace; c0116e19 <sys_delete_module+109/1e0> Trace; d08aa000 <[serial_cs].data.end+4021/4081> Trace; c0106d2b <system_call+33/38>
Code; c011a345 <unregister_sysctl_table+5/30> 00000000 <_EIP>:
Code; c011a345 <unregister_sysctl_table+5/30> <=====
0: 8b 53 08 mov 0x8(%ebx),%edx <=====
Code; c011a348 <unregister_sysctl_table+8/30>
3: 8b 43 04 mov 0x4(%ebx),%eax
Code; c011a34b <unregister_sysctl_table+b/30>
6: 89 50 04 mov %edx,0x4(%eax)
Code; c011a34e <unregister_sysctl_table+e/30>
9: 89 02 mov %eax,(%edx)
Code; c011a350 <unregister_sysctl_table+10/30>
b: 8b 0d 94 5c 2a c0 mov 0xc02a5c94,%ecx
Code; c011a356 <unregister_sysctl_table+16/30>
11: 51 push %ecx
Code; c011a357 <unregister_sysctl_table+17/30>
12: 8b 13 mov (%ebx),%edx

16 warnings issued. Results may not be reliable.

Signature · 11 lines

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Diego Santa Cruz                         mailto:[email protected]
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