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I have a panic on machines which have very high rate of incoming TCP connections.
This panic occurs with 2.4.19 with SuSE patches applied to it. Specs: Pentium III (Coppermine), 1GHz, with memory = 515356 kB
cat /proc/modules gives the following:
ppp_generic 20576 0
slhc 6724 0 [ppp_generic]
af_packet 11432 0 (autoclean)
eepro100 22136 3 (autoclean)
ipt_state 1112 14 (autoclean)
ip_conntrack 21176 1 (autoclean) [ipt_state]
ipt_LOG 4280 8 (autoclean)
iptable_filter 2444 1 (autoclean)
ip_tables 14720 3 [ipt_state ipt_LOG iptable_filter]
rtc 8684 0 (autoclean)
Following is the output from ksymoops:
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Unable to handle kernel paging request at virtual address 0013c1da
c01f8bcd
*pde = 00000000
Oops: 0000 2.4.19-prod-sles-ded8470bc8d929ffca7ec0daf42b93d6 #1 Thu Oct 9 05:10:58 EDT 2003
CPU: 0
EIP: 0010:[<c01f8bcd>] Tainted: P
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 03049a34 ebx: 0013c192 ecx: 0013c192 edx: 00000000
esi: c3007e98 edi: 00000c00 ebp: 00000096 esp: c3007e64
ds: 0018 es: 0018 ss: 0018
Process netstat (pid: 11340, stackpage=c3007000)
Stack: 0013c192 c3007e98 c01f8fa1 0013c192 c3007e98 0000000e 00000000 00000c00
c0128bf0 00000960 00003ca5 0000000e 0000012c 33312020 3030202a 42303430
303a3037 20303031 36303030 34324431 3630303a 44442035 30303020 30303030
Call Trace: [<c01f8fa1>] [<c0128bf0>] [<c01303c4>] [<c01561b4>] [<c0136d46>] [<c0108933>]
Code: 8b 59 48 29 c3 0f b7 41 08 0f 48 da 86 c4 0f b7 51 22 86 d6
>>EIP; c01f8bcd <get_timewait_sock+d/70> <=====
>>esi; c3007e98 <[ip_conntrack].bss.end+83306d/eaf235>
>>esp; c3007e64 <[ip_conntrack].bss.end+833039/eaf235>
Trace; c01f8fa1 <tcp_get_info+371/440>
Trace; c0128bf0 <filemap_nopage+0/210>
Trace; c01303c4 <__alloc_pages+74/2e0>
Trace; c01561b4 <proc_file_read+94/1c0>
Trace; c0136d46 <sys_read+96/f0>
Trace; c0108933 <system_call+33/38>
Code; c01f8bcd <get_timewait_sock+d/70>
00000000 <_EIP>:
Code; c01f8bcd <get_timewait_sock+d/70> <=====
0: 8b 59 48 mov 0x48(%ecx),%ebx <=====
Code; c01f8bd0 <get_timewait_sock+10/70>
3: 29 c3 sub %eax,%ebx
Code; c01f8bd2 <get_timewait_sock+12/70>
5: 0f b7 41 08 movzwl 0x8(%ecx),%eax
Code; c01f8bd6 <get_timewait_sock+16/70>
9: 0f 48 da cmovs %edx,%ebx
Code; c01f8bd9 <get_timewait_sock+19/70>
c: 86 c4 xchg %al,%ah
Code; c01f8bdb <get_timewait_sock+1b/70>
e: 0f b7 51 22 movzwl 0x22(%ecx),%edx
Code; c01f8bdf <get_timewait_sock+1f/70>
12: 86 d6 xchg %dl,%dh
<0> Kernel panic: Aiee, killing interrupt handler!
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Looks tcp_ehash[i+tcp_ehash_size] which accomodates all the timewait socks has been corrupted by the time procfs read happens.
Is this panic already reported if so is there patch available for this.
Thanks,
-KC
PS: Please copy me as I am not the list.
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