[Bug 65542] kernel BUG() triggered under high load

[Per Buer]

Public bug reported:

Binary package hint: linux-image-2.6.15-27-sparc64-smp

Whilst hammering on my brand new T2000 with ab - apachebench - on a
T2000 server running lighttpd I triggered the following BUG:

Oct 11 16:02:01 dhcp217 kernel: [    0.211363] kernel BUG at include/linux/skbuff.h:466!
Oct 11 16:02:01 dhcp217 kernel: [    0.211384]               \|/ ____ \|/
Oct 11 16:02:01 dhcp217 kernel: [    0.211390]               "@'/ .. \`@"
Oct 11 16:02:01 dhcp217 kernel: [    0.211396]               /_| \__/ |_\
Oct 11 16:02:01 dhcp217 kernel: [    0.211402]                  \__U_/
Oct 11 16:02:01 dhcp217 kernel: [    0.211416] events/5(71): Kernel bad sw trap 5 [#1]
Oct 11 16:02:01 dhcp217 kernel: [    0.211433] TSTATE: 0000000080001605 TPC: 0000000000639694 TNPC: 0000000000639698 Y: 00000000    Not tainted
Oct 11 16:02:01 dhcp217 kernel: [    0.211466] TPC: <tso_fragment+0x214/0x220>
Oct 11 16:02:01 dhcp217 kernel: [    0.211481] g0: ffffffffffffffbf g1: 00000000006c8000 g2: 0000000000000001 g3: 0000000000000000
Oct 11 16:02:01 dhcp217 kernel: [    0.211503] g4: fffff801ff8832a0 g5: fffff80003d0a0c0 g6: fffff801ff8b4000 g7: 0000000000000000
Oct 11 16:02:01 dhcp217 kernel: [    0.211521] o0: 0000000000000039 o1: 0000000000680410 o2: 00000000000001d2 o3: 0000000000000018
Oct 11 16:02:01 dhcp217 kernel: [    0.211543] o4: 00000000b488ab82 o5: ffffffffcfffffff sp: fffff801ff8b66b1 ret_pc: 000000000063968c
Oct 11 16:02:01 dhcp217 kernel: [    0.211565] RPC: <tso_fragment+0x20c/0x220>
Oct 11 16:02:01 dhcp217 kernel: [    0.211581] l0: 00000000000005a8 l1: fffff801eb084720 l2: fffff801eb954d60 l3: 0000000000000000
Oct 11 16:02:01 dhcp217 kernel: [    0.211600] l4: 0000000000007530 l5: 00000000c0a800ae l6: 0000000000721800 l7: 00000000a68c0050
Oct 11 16:02:01 dhcp217 kernel: [    0.211620] i0: 0000000000000100 i1: fffff801e99f4e60 i2: 0000000000000b50 i3: 00000000000005a8
Oct 11 16:02:01 dhcp217 kernel: [    0.211640] i4: 0000000000000006 i5: 0000000000000005 i6: fffff801ff8b6771 i7: 0000000000639e74
Oct 11 16:02:01 dhcp217 kernel: [    0.211664] I7: <__tcp_push_pending_frames+0x2d4/0x4e0>
Oct 11 16:02:01 dhcp217 kernel: [    0.211675] Caller[0000000000639e74]: __tcp_push_pending_frames+0x2d4/0x4e0
Oct 11 16:02:01 dhcp217 kernel: [    0.211700] Caller[0000000000635424]: tcp_rcv_state_process+0x784/0x12a0
Oct 11 16:02:01 dhcp217 kernel: [    0.211723] Caller[000000000063e90c]: tcp_v4_do_rcv+0xcc/0x400
Oct 11 16:02:01 dhcp217 kernel: [    0.211742] Caller[0000000000640328]: tcp_v4_rcv+0xbe8/0xc20
Oct 11 16:02:01 dhcp217 kernel: [    0.211759] Caller[000000000061fa78]: ip_local_deliver+0x178/0x380
Oct 11 16:02:01 dhcp217 kernel: [    0.211780] Caller[0000000000620050]: ip_rcv+0x3d0/0x660
Oct 11 16:02:01 dhcp217 kernel: [    0.211797] Caller[00000000005ff4d0]: netif_receive_skb+0x310/0x420
Oct 11 16:02:01 dhcp217 kernel: [    0.211819] Caller[00000000100ed024]: e1000_clean_rx_irq_ps+0xc4/0xbe0 [e1000]
Oct 11 16:02:01 dhcp217 kernel: [    0.211895] Caller[00000000100ecde8]: e1000_clean+0xa8/0x220 [e1000]
Oct 11 16:02:01 dhcp217 kernel: [    0.211943] Caller[00000000005fd9f4]: net_rx_action+0xb4/0x1c0
Oct 11 16:02:01 dhcp217 kernel: [    0.211962] Caller[000000000045e47c]: __do_softirq+0x7c/0x120
Oct 11 16:02:01 dhcp217 kernel: [    0.211981] Caller[000000000045e568]: do_softirq+0x48/0x60
Oct 11 16:02:01 dhcp217 kernel: [    0.211997] Caller[0000000000433a98]: smp_percpu_timer_interrupt+0xb8/0x160
Oct 11 16:02:01 dhcp217 kernel: [    0.212025] Caller[00000000004109d4]: tl0_irq14+0x14/0x20
Oct 11 16:02:01 dhcp217 kernel: [    0.212044] Caller[00000000100e6c50]: e1000_update_stats+0x930/0x980 [e1000]
Oct 11 16:02:01 dhcp217 kernel: [    0.212094] Caller[00000000100ea2c0]: e1000_watchdog_task+0x60/0x720 [e1000]
Oct 11 16:02:01 dhcp217 kernel: [    0.212142] Caller[000000000046b32c]: worker_thread+0x14c/0x240
Oct 11 16:02:01 dhcp217 kernel: [    0.212169] Caller[0000000000470380]: kthread+0xe0/0x100
Oct 11 16:02:01 dhcp217 kernel: [    0.212190] Caller[0000000000417f90]: kernel_thread+0x30/0x60
Oct 11 16:02:01 dhcp217 kernel: [    0.212208] Caller[00000000004703b0]: keventd_create_kthread+0x10/0x60
Oct 11 16:02:01 dhcp217 kernel: [    0.212228] Instruction DUMP: 921021d2  7ff77e1d  90122010 <91d02005> 01000000  01000000  9de3bf40  94102000  9210
0019 
Oct 11 16:02:01 dhcp217 kernel: [    0.212273] Kernel panic - not syncing: Aiee, killing interrupt handler!
Oct 11 16:02:01 dhcp217 kernel: [    9.198290]  <0>Press Stop-A (L1-A) to return to the boot prom


The server is running Ubuntu Dapper 6.06.1. Let me know if you require more information or if I should take the problem upstream.

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

-- 
kernel BUG() triggered under high load
https://launchpad.net/bugs/65542