Red Hat Bugzilla – Bug 144819
kernel BUG at net/ipv4/tcp_output.c:922
Last modified: 2015-01-04 17:15:19 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041201 Firefox/1.0 Description of problem: One of our webservers while doing completely normal traffic panic'd with the following message. kernel BUG at net/ipv4/tcp_output.c:922! invalid operand: 0000 [#1] SMP Modules linked in: nfs lockd sunrpc e1000 e100 mii microcode dm_mod uhci_hcd ehci_hcd ext3 jbd raid1 CPU: 1 EIP: 0060:[<c0295421>] Not tainted VLI EFLAGS: 00010202 (2.6.10-1.8_FC2smp) EIP is at tcp_retrans_try_collapse+0xbe/0x2c2 eax: e7273c80 ebx: ef1eb280 ecx: 00000550 edx: ec89fd94 esi: ec89fd94 edi: ec89fb80 ebp: cb490380 esp: c03b2f60 ds: 007b es: 007b ss: 0068 Process swapper (pid: 0, threadinfo=c03b2000 task=f7fa6530) Stack: 00000010 00000338 00000218 ec89fd94 ec89fb80 ef1eb280 ec89fd94 ec89fb80 fffffff5 c02958d8 00000004 00000550 ec89fb80 ec89fb80 ec89fd94 ec89fbf4 c02974da ec89fb80 ec89fd94 c2028a60 c03b2fcc c0297684 c0297605 ec89fb80 Call Trace: [<c02958d8>] tcp_retransmit_skb+0x162/0x2b8 [<c02974da>] tcp_retransmit_timer+0x252/0x37d [<c0297684>] tcp_write_timer+0x7f/0xb9 [<c0297605>] tcp_write_timer+0x0/0xb9 [<c0297605>] tcp_write_timer+0x0/0xb9 [<c0125556>] run_timer_softirq+0x123/0x150 [<c0122150>] __do_softirq+0x4c/0xb1 [<c0105d83>] do_softirq+0x41/0x48 ======================= [<c010470c>] apic_timer_interrupt+0x1c/0x24 [<c0102018>] default_idle+0x0/0x2f [<c0102041>] default_idle+0x29/0x2f [<c01020a0>] cpu_idle+0x26/0x3b Code: 00 8b 44 24 08 03 44 24 04 39 c8 0f 8f 16 02 00 00 8b 83 ac 00 00 00 66 83 78 0a 01 75 0d 8b 85 ac 00 00 00 66 83 78 0a 01 74 08 <0f> 0b 9a 03 f0 79 2f c0 8b 45 08 ff 48 08 c7 45 08 00 00 00 00 <0>Kernel panic - not syncing: Fatal exception in interrupt Version-Release number of selected component (if applicable): kernel-smp-2.6.10-1.8_FC2smp How reproducible: Didn't try Steps to Reproduce: 1. Setup standard webserver using NFSv3, apache 2. Run for a couple days under high load (10mbit or so) 3. Crash Actual Results: Crash / Reboot Expected Results: Shouldn't have crashed Additional info:
Fedora Core 2 has now reached end of life, and no further updates will be provided by Red Hat. The Fedora legacy project will be producing further kernel updates for security problems only. If this bug has not been fixed in the latest Fedora Core 2 update kernel, please try to reproduce it under Fedora Core 3, and reopen if necessary, changing the product version accordingly. Thank you.