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SubjectRe: 2.4.18-pre9-xfs-shawn4 - kmem_cache_alloc oops
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Can you compile the kdb debugger into the kernel?
Also, if you have memory, enable the BUG() reporting (will use 70K of
memory) but will determine what line the kernel is crashing on.

On Tue, 2002-02-12 at 08:10, Dag Bakke wrote:
> After ditching hpfs support, I got the kernel to boot. I do get one
> ooops during boot, though.
> I'll try ditching CONFIG_PNPBIOS and see if that makes a difference.
>
> Thanks,
>
> Dag B
>
>
>
> root@dagb:/usr/src/kernelpatches# ksymoops < ~dagb/kerneloops2.txt
> ksymoops 2.4.3 on i686 2.4.18-pre9-xfs-shawn4. Options used
> -V (default)
> -k /proc/ksyms (default)
> -l /proc/modules (default)
> -o /lib/modules/2.4.18-pre9-xfs-shawn4/ (default)
> -m /usr/src/linux/System.map (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.
>
> Warning (compare_maps): mismatch on symbol partition_name , ksyms_base says c02fb0c0, System.map says c0150450. Ignoring ksyms_base entry
> Unable to handle kernel NULL pointer dereference at virtual address 0000002c
> c012a994
> *pde = 00000000
> Oops: 0000
> CPU: 0
> EIP: 0010:[<c012a994>] Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010046
> eax: 00000000 ebx: 00000008 ecx: c1374000 edx: 00000000
> esi: 00000000 edi: c0444880 ebp: 000001f0 esp: c1375f90
> ds: 0018 es: 0018 ss: 0018
> Process swapper (pid: 2, stackpage=c1375000)
> Stack: 00000000 00000000 c0444880 c1375fd4 c011d6f8 00000000 000001f0 c1374000
> 00000000 00000000 c011f6c3 00000000 00010f00 cffe7fb8 c0114982 00000000
> 00000000 0008e000 c02d67b1 00010f00 cffe7fb8 00000000 0008e000 c01054df
> Call Trace: [<c011d6f8>] [<c011f6c3>] [<c0114982>] [<c02d67b1>] [<c01054df>]
> [<c01054e8>]
> Code: f6 46 2c 01 74 02 0f 0b 9c 5f fa 8b 4e 08 39 d9 75 22 8b 4e
>
> >>EIP; c012a994 <kmem_cache_alloc+24/b0> <=====
> Trace; c011d6f8 <alloc_uid+48/c0>
> Trace; c011f6c2 <set_user+12/60>
> Trace; c0114982 <reparent_to_init+122/130>
> Trace; c02d67b0 <pnp_dock_thread+10/f0>
> Trace; c01054de <kernel_thread+1e/40>
> Trace; c01054e8 <kernel_thread+28/40>
> Code; c012a994 <kmem_cache_alloc+24/b0>
> 00000000 <_EIP>:
> Code; c012a994 <kmem_cache_alloc+24/b0> <=====
> 0: f6 46 2c 01 testb $0x1,0x2c(%esi) <=====
> Code; c012a998 <kmem_cache_alloc+28/b0>
> 4: 74 02 je 8 <_EIP+0x8> c012a99c <kmem_cache_alloc+2c/b0>
> Code; c012a99a <kmem_cache_alloc+2a/b0>
> 6: 0f 0b ud2a
> Code; c012a99c <kmem_cache_alloc+2c/b0>
> 8: 9c pushf
> Code; c012a99c <kmem_cache_alloc+2c/b0>
> 9: 5f pop %edi
> Code; c012a99e <kmem_cache_alloc+2e/b0>
> a: fa cli
> Code; c012a99e <kmem_cache_alloc+2e/b0>
> b: 8b 4e 08 mov 0x8(%esi),%ecx
> Code; c012a9a2 <kmem_cache_alloc+32/b0>
> e: 39 d9 cmp %ebx,%ecx
> Code; c012a9a4 <kmem_cache_alloc+34/b0>
> 10: 75 22 jne 34 <_EIP+0x34> c012a9c8 <kmem_cache_alloc+58/b0>
> Code; c012a9a6 <kmem_cache_alloc+36/b0>
> 12: 8b 4e 00 mov 0x0(%esi),%ecx
>
>
> 2 warnings issued. Results may not be reliable.
>


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