Messages in this thread | | | Date | Sat, 17 Oct 2009 19:35:08 -0700 | From | Anirban Sinha <> | Subject | Re: Kernel oops when clearing bgp neighbor info with TCP MD5SUM enabled |
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Once upon a time, like on 09-10-17 10:57 AM, Anirban Sinha wrote: > On Thu, 8 Oct 2009, David Miller wrote: > >>>>> We are noticing a kernel OOPS on 2.6.26 kernel when we issue the command >>>>> "clear ip bgp <bgp-peer-ip>" on Quagga BGP routing software.
and btw, this is the crash (on mips) we are talking about:
# [23:10:35.108808] Kernel bug detected[#1]: [23:10:35.112527] Cpu 0 [23:10:35.114676] $ 0 : 0000000000000000 0000000014001fe0 0000000000000066 0000000000000004 [23:10:35.122845] $ 4 : ffffffff80516c10 0000000014001fe0 ffffffff8050c010 0000000000000004 [23:10:35.131015] $ 8 : 0000000000000000 0000000000000041 ffffffff805142e8 0000000000000001 [23:10:35.139184] $12 : ffffffff80600000 ffffffff805f0000 0000000000000064 0000000000000190 [23:10:35.147354] $16 : 0000000000000102 ffffffff803afdf0 ffffffff80539040 ffffffff80600780 [23:10:35.155526] $20 : ffffffff80540000 0000000000200200 ffffffff804c0000 000000000000000a [23:10:35.163695] $24 : a3d70a3d70a3d70b 8000000000000003 [23:10:35.171865] $28 : ffffffff8050c000 ffffffff8050fd90 9000000010030000 ffffffff801487a8 [23:10:35.180035] Hi : 0000000000000000 [23:10:35.183819] Lo : 0000000000000000 [23:10:35.187603] epc : ffffffff801487a8 run_timer_softirq+0x198/0x258 Tainted: P [23:10:35.196032] ra : ffffffff801487a8 run_timer_softirq+0x198/0x258 [23:10:35.202395] Status: 14001fe3 KX SX UX KERNEL EXL IE [23:10:35.207814] Cause : 00808024 [23:10:35.210911] PrId : 01041100 (SiByte SB1A) [23:10:35.215209] Modules linked in: xt_state ipt_REJECT iptable_filter nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 ip_tables ebtable_filter ebtables bridge llc zeug_ipmcdrv(P) irqdisp(P) zvirt(P) zeugmod(P) softdog [23:10:35.236024] Process swapper (pid: 0, threadinfo=ffffffff8050c000, task=ffffffff805142e8, tls=0000000000000000) [23:10:35.246169] Stack : ffffffff8050fd90 ffffffff8050fd90 0000000014001fe0 ffffffff805ff3e0 [23:10:35.254166] ffffffff806003c4 0000000000000001 ffffffff8053f650 ffffffff805706d0 [23:10:35.262337] ffffffff80572020 ffffffff80142280 ffffffff806003c0 0000000000000000 [23:10:35.270507] 0000000014001fe0 000000000000c5b0 ffffffff8fefc520 ffffffff8feea52c [23:10:35.278676] 0000000000000015 0000000000004460 0000000000000940 ffffffff8fe1bf00 [23:10:35.286846] ffffffff8fffdab0 ffffffff80142410 0000000000000000 ffffffff80142778 [23:10:35.295017] ffffffff80103d20 ffffffff80103d20 0000000000000000 0000000014001fe1 [23:10:35.303187] 0000000000040000 ffffffff8050c010 0000000000000000 a80000017f87c138 [23:10:35.311357] 0000000014001fe0 ffffffffffff00fe 0000000000000004 a80000017e7e0680 [23:10:35.319528] 0000000000000000 000000000000001d ffffffff8050ffe0 0000000000001f00 [23:10:35.327696] ... [23:10:35.330536] Call Trace: [23:10:35.333201] [<ffffffff801487a8>] run_timer_softirq+0x198/0x258 [23:10:35.339224] [<ffffffff80142280>] __do_softirq+0x198/0x288 [23:10:35.344812] [<ffffffff80142410>] do_softirq+0xa0/0xa8 [23:10:35.350057] [<ffffffff80142778>] irq_exit+0x70/0x88 [23:10:35.355131] [<ffffffff80103d20>] ret_from_irq+0x0/0x4 [23:10:35.360377] [<ffffffff801063f4>] cpu_idle+0x1c/0x88 [23:10:35.365455] [23:10:35.367171] [23:10:35.367174] Code: 0040382d 0c04ef4c 00000000 <0200000d> 0c10ee9c 0260202d dfa60000 17a6ffe5 00000000 [23:10:35.378822] Kernel panic - not syncing: Fatal exception in interrupt
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