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Date: Mon, 27 Jan 2003 10:26:46 +0200 (EET)
From: Catalin BOIE <util@ns2.deuroconsult.ro>
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To: <linux-kernel@vger.kernel.org>, <linux-net@vger.kernel.org>
Subject: Re: [OOPS] K2.4.20: "Kernel bug at slab.c:1128" - sch related
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I want to add that this happens only on P4 CPU and not on a Athlon 900 MHz
CPU.

Thanks!

On Sat, 25 Jan 2003, Catalin BOIE wrote:

> Hello!
>
> I use a custom script to generate qdiscs/classes/filters that triggers a
> kernel oops.
>
> Kernel 2.4.20
> Pentium IV 1.2 GHz
>
> Kernel bug at slab.c:1128
> Invalid operand: 0000
> CPU:    0
> EIP:    0010:[<c0127ab4>]  not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010202
> EAX: ffffffff   EBX: c12c52c0     ECX: 000001f0       EDX: 00000000
> ESI: 000001f0   EDI: c12c52c0     EBP: 000001f0       ESP: ceab1c60
> DS: 0018        ES: 0018       SS: 0018
> Process autohash (pid: 109, stackpage=ceab1000)
> Stack: [<c12c5200>] [<c12c52c8>] [<00000246>] [<000001f0>] [<cf8bb000>]
> [<c0127e0f>] [<c12c52c0>] [<000001f0>] [<00000064>] [<c0256640>]
> [<ce59ac00>]
> [<cfed8c00>] [<c01d3cac>] [<00000064>] [<000001f0>] [<cfed4400>]
> [<cf115034>]
> [<ce59ac00>] [<ce59b060>] [<ce59b060>] [<d081ecc7>] [<cfed8c00>]
> [<c0256640>]
> [<fffffffe>]
> Call trace: [<c0127e0f>] [<c01d3cac>] [<d081ecc7>] [<c01d5265>]
> [<d0820600>]
>             [<c01d27e4>] [<c01d0605>] [<c01d7cd4>] [<c01d7730>]
> [<c01d7b73>]
>             [<c01c79d5>] [<c01c8b48>] [<c0120010>] [<c0120d8e>]
> [<c0111394>]
>             [<c0123543>] [<c0123743>] [<c0123a74>] [<c012396c>]
> [<c01c8fcc>]
>             [<c0106bc7>]
> Code: 0f 0b 68 04 c0 50 21 c0 c7 44 24 10 01 00 00 00 b8 03 00 00
>
>
> >>EIP; c0127ab4 <kmem_cache_grow+44/1d8>   <=====
>
> >>EAX; ffffffff <END_OF_CODE+3fd31247/????>
> >>EBX; c12c52c0 <END_OF_CODE+ff6508/????>
> >>EDI; c12c52c0 <END_OF_CODE+ff6508/????>
> >>ESP; ceab1c60 <END_OF_CODE+e7e2ea8/????>
>
> Trace; c0127e0f <kmalloc+eb/110>
> Trace; c01d3cac <qdisc_create_dflt+20/bc>
> Trace; d081ecc7 <END_OF_CODE+1054ff0f/????>
> Trace; c01d5265 <tc_ctl_tclass+1cd/214>
> Trace; d0820600 <END_OF_CODE+10551848/????>
> Trace; c01d27e4 <rtnetlink_rcv+298/3bc>
> Trace; c01d0605 <__neigh_event_send+89/1b4>
> Trace; c01d7cd4 <netlink_data_ready+1c/60>
> Trace; c01d7730 <netlink_unicast+230/278>
> Trace; c01d7b73 <netlink_sendmsg+1fb/20c>
> Trace; c01c79d5 <sock_sendmsg+69/88>
> Trace; c01c8b48 <sys_sendmsg+18c/1e8>
> Trace; c0120010 <map_user_kiobuf+8/f8>
> Trace; c0120d8e <handle_mm_fault+52/b0>
> Trace; c0111394 <do_page_fault+160/480>
> Trace; c0123543 <do_generic_file_read+1f7/404>
> Trace; c0123743 <do_generic_file_read+3f7/404>
> Trace; c0123a74 <generic_file_read+7c/110>
> Trace; c012396c <file_read_actor+0/8c>
> Trace; c01c8fcc <sys_socketcall+1e4/200>
> Trace; c0106bc7 <system_call+33/38>
>
> Code;  c0127ab4 <kmem_cache_grow+44/1d8>
> 00000000 <_EIP>:
> Code;  c0127ab4 <kmem_cache_grow+44/1d8>   <=====
>    0:   0f 0b                     ud2a      <=====
> Code;  c0127ab6 <kmem_cache_grow+46/1d8>
>    2:   68 04 c0 50 21            push   $0x2150c004
> Code;  c0127abb <kmem_cache_grow+4b/1d8>
>    7:   c0 c7 44                  rol    $0x44,%bh
> Code;  c0127abe <kmem_cache_grow+4e/1d8>
>    a:   24 10                     and    $0x10,%al
> Code;  c0127ac0 <kmem_cache_grow+50/1d8>
>    c:   01 00                     add    %eax,(%eax)
> Code;  c0127ac2 <kmem_cache_grow+52/1d8>
>    e:   00 00                     add    %al,(%eax)
> Code;  c0127ac4 <kmem_cache_grow+54/1d8>
>   10:   b8 03 00 00 00            mov    $0x3,%eax
>
>
> Thanks!
>
>
> ---
> Catalin(ux) BOIE
> catab@deuroconsult.ro
>
> -
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---
Catalin(ux) BOIE
catab@deuroconsult.ro

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