Oh, and is it repeatable?
George
The Doctor What wrote:
>
> Good day!
>
> Hit this oops and thought you all might like to look at it:
> Kernel version 2.4.13 vanilla with Robert Love's Premptive Patch.
>
> ksymoops 2.4.3 on i686 2.4.13-p1. Options used
> -V (default)
> -k /proc/ksyms (default)
> -l /proc/modules (default)
> -o /lib/modules/2.4.13-p1/ (default)
> -m /boot/System.map-2.4.13-p1 (default)
>
> Warning: You did not tell me where to find symbol information. I will
> assume that the log matches the kernel and modules that are running
> right now and I'll use the default options above for symbol resolution.
> If the current kernel and/or modules do not match the log, you can get
> more accurate output by telling me the kernel version and where to find
> map, modules, ksyms etc. ksymoops -h explains the options.
>
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> c013effa
> *pde = 00000000
> Oops: 0000
> CPU: 0
> EIP: 0010:[<c013effa>] Tainted: P
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010217
> eax: c2e6ffa4 ebx: c2e6ffa4 ecx: c2a20240 edx: c0221188
> esi: 00000000 edi: 00000000 ebp: c2e6ffa4 esp: c2e6ff1c
> ds: 0018 es: 0018 ss: 0018
> Process checkpc (pid: 410, stackpage=c2e6f000)
> Stack: c0221188 c2e6e000 c25f9c00 c2e6ffa4 c015bb85 c2e6ffa4 00000000 c25f80c0
> c013c344 c25f80c0 c2e6ffa4 c25f9c00 c7f89000 00000000 c2e6ffa4 00000009
> 00000001 00000009 c2e6ffa8 00000009 c7f89008 c25f80c0 c7f89005 00000003
> Call Trace: [<c015bb85>] [<c013c344>] [<c013c46a>] [<c013c8d1>] [<c0139415>]
> [<c0106d5b>]
> Code: 80 3e 2f 0f 85 d5 00 00 00 53 e8 af c8 ff ff 83 c4 04 ba 00
>
> >>EIP; c013effa <vfs_follow_link+1a/164> <=====
> Trace; c015bb84 <devfs_follow_link+44/6c>
> Trace; c013c344 <link_path_walk+7b4/8c0>
> Trace; c013c46a <path_walk+1a/1c>
> Trace; c013c8d0 <__user_walk+34/50>
> Trace; c0139414 <sys_stat64+18/74>
> Trace; c0106d5a <system_call+32/38>
> Code; c013effa <vfs_follow_link+1a/164>
> 00000000 <_EIP>:
> Code; c013effa <vfs_follow_link+1a/164> <=====
> 0: 80 3e 2f cmpb $0x2f,(%esi) <=====
> Code; c013effc <vfs_follow_link+1c/164>
> 3: 0f 85 d5 00 00 00 jne de <_EIP+0xde> c013f0d8 <vfs_follow_link+f8/164>
> Code; c013f002 <vfs_follow_link+22/164>
> 9: 53 push %ebx
> Code; c013f004 <vfs_follow_link+24/164>
> a: e8 af c8 ff ff call ffffc8be <_EIP+0xffffc8be> c013b8b8 <path_release+0/2c>
> Code; c013f008 <vfs_follow_link+28/164>
> f: 83 c4 04 add $0x4,%esp
> Code; c013f00c <vfs_follow_link+2c/164>
> 12: ba 00 00 00 00 mov $0x0,%edx
>
> 1 warning issued. Results may not be reliable.
>
> The above happened after doing a checkpc -f in my startup scripts.
>
> lp, parport_pc and parport were all modules that weren't loaded till
> the checkpc ran.
>
> I had just turned on devfs, and this happened.
>
> Also: /dev/lp0 had incorrect (unwritable) permissions after being
> created.
>
> Hope this is helpful.
>
> Ciao!
>
> --
> "So. let me get this straight. You want to fly on a magic carpet to see the
> King of the Potato People and plead with him for your freedom, and you're
> telling me you're completely sane?!"
> --Rimmer (Red Dwarf episode: Quarantine)
>
> The Doctor What: Kaboom! http://docwhat.gerf.org/
> docwhat@gerf.org KF6VNC
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