gistfile1.txt

Dec  9 14:27:03 acc-db-01 [248740.420900] divide error: 0000 [#1] SMP 
Dec  9 14:27:03 acc-db-01 [248740.428791] last sysfs file: /sys/devices/system/cpu/cpu15/cache/index2/shared_cpu_map
Dec  9 14:27:03 acc-db-01 [248740.444194] CPU 6 
Dec  9 14:27:03 acc-db-01 [248740.450660] Modules linked in: btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs reiserfs xfs exportfs nfs lockd nfs_acl auth_rpcgss sunrpc ipmi_devintf ipmi_si ipmi_msghandler autofs4 bonding fbcon tileblit font bitblit softcursor vga16fb vgastate bnx2 psmouse dell_wmi serio_raw joydev power_meter dcdbas lp parport ses enclosure usbhid hid megaraid_sas
Dec  9 14:27:03 acc-db-01 [248740.516499] Pid: 17864, comm: dsm_sa_snmp32d Not tainted 2.6.32-22-generic #33-Ubuntu PowerEdge R710
Dec  9 14:27:03 acc-db-01 [248740.538698] RIP: 0010:[<ffffffff8105621c>]  [<ffffffff8105621c>] find_busiest_group+0x63c/0x900
Dec  9 14:27:03 acc-db-01 [248740.561223] RSP: 0018:ffff880604711b88  EFLAGS: 00010046
Dec  9 14:27:03 acc-db-01 [248740.574067] RAX: 0000000000000000 RBX: ffff880604711d54 RCX: 0000000000000001
Dec  9 14:27:03 acc-db-01 [248740.597125] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
Dec  9 14:27:03 acc-db-01 [248740.621991] RBP: ffff880604711cf8 R08: ffff88034ac6fd88 R09: 0000000000000040
Dec  9 14:27:03 acc-db-01 [248740.648293] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
Dec  9 14:27:03 acc-db-01 [248740.676802] R13: 0000000000015bc0 R14: ffffffffffffffff R15: 0000000000000000
Dec  9 14:27:03 acc-db-01 [248740.706983] FS:  0000000000000000(0000) GS:ffff88034ac60000(0063) knlGS:00000000f56ffb70
Dec  9 14:27:03 acc-db-01 [248740.739611] CS:  0010 DS: 002b ES: 002b CR0: 000000008005003b
Dec  9 14:27:03 acc-db-01 [248740.757771] CR2: 00007f593183a000 CR3: 00000002abc38000 CR4: 00000000000006e0
Dec  9 14:27:03 acc-db-01 [248740.790812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Dec  9 14:27:03 acc-db-01 [248740.824413] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Dec  9 14:27:03 acc-db-01 [248740.858726] Process dsm_sa_snmp32d (pid: 17864, threadinfo ffff880604710000, task ffff88062d4a44d0)
Dec  9 14:27:03 acc-db-01 [248740.895283] Stack:
Dec  9 14:27:03 acc-db-01 [248740.910801]  ffff880604711c98 ffff880604711c08 ffff880604711d40 0000000000000cce
Dec  9 14:27:03 acc-db-01 [248740.932047] <0> ffff88034ac6fc60 00000006810fae02 000000010000000e 0000000000000008
Dec  9 14:27:03 acc-db-01 [248740.967302] <0> 0000000000015bc0 0000000000015bc0 ffff88034ac6fd70 0000000000015bc0
Dec  9 14:27:03 acc-db-01 [248741.016468] Call Trace:
Dec  9 14:27:03 acc-db-01 [248741.032629]  [<ffffffff8105c928>] load_balance_newidle+0xa8/0x310
Dec  9 14:27:03 acc-db-01 [248741.052237]  [<ffffffff8153ea7a>] thread_return+0x35a/0x420
Dec  9 14:27:03 acc-db-01 [248741.071095]  [<ffffffff8153fd4d>] do_nanosleep+0x8d/0xc0
Dec  9 14:27:03 acc-db-01 [248741.089458]  [<ffffffff81089834>] hrtimer_nanosleep+0xc4/0x180
Dec  9 14:27:03 acc-db-01 [248741.108107]  [<ffffffff81088550>] ? hrtimer_wakeup+0x0/0x30
Dec  9 14:27:03 acc-db-01 [248741.126252]  [<ffffffff81089664>] ? hrtimer_start_range_ns+0x14/0x20
Dec  9 14:27:03 acc-db-01 [248741.144902]  [<ffffffff810acee4>] compat_sys_nanosleep+0xb4/0x120
Dec  9 14:27:03 acc-db-01 [248741.163137]  [<ffffffff8104870f>] sysenter_dispatch+0x7/0x2e
Dec  9 14:27:03 acc-db-01 [248741.180700] Code: ff c7 85 c4 fe ff ff 01 00 00 00 e9 95 fb ff ff 0f 1f 80 00 00 00 00 48 8b 95 e0 fe ff ff 48 8b 45 a8 8b 72 08 48 c1 e0 0a 31 d2 <48> f7 f6 48 8b 75 b0 48 89 45 a0 31 c0 48 85 f6 74 0c 48 8b 45 
Dec  9 14:27:03 acc-db-01 [248741.242654] RIP  [<ffffffff8105621c>] find_busiest_group+0x63c/0x900
Dec  9 14:27:03 acc-db-01 [248741.261816]  RSP <ffff880604711b88>
Dec  9 14:27:03 acc-db-01 [248747.675681] ------------[ cut here ]------------
Dec  9 14:27:03 acc-db-01 [248747.692559] WARNING: at /build/buildd/linux-2.6.32/net/sched/sch_generic.c:261 dev_watchdog+0x262/0x270()
Dec  9 14:27:03 acc-db-01 [248747.725803] Hardware name: PowerEdge R710
Dec  9 14:27:03 acc-db-01 [248747.741343] NETDEV WATCHDOG: eth0 (bnx2): transmit queue 3 timed out
Dec  9 14:27:03 acc-db-01 [248747.759239] Modules linked in: btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs reiserfs xfs exportfs nfs lockd nfs_acl auth_rpcgss sunrpc ipmi_devintf ipmi_si ipmi_msghandler autofs4 bonding fbcon tileblit font bitblit softcursor vga16fb vgastate bnx2 psmouse dell_wmi serio_raw joydev power_meter dcdbas lp parport ses enclosure usbhid hid megaraid_sas
Dec  9 14:27:03 acc-db-01 [248747.856877] Pid: 0, comm: swapper Not tainted 2.6.32-22-generic #33-Ubuntu
Dec  9 14:27:03 acc-db-01 [248747.875145] Call Trace:
Dec  9 14:27:03 acc-db-01 [248747.888978]  <IRQ>  [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0
Dec  9 14:27:03 acc-db-01 [248747.907068]  [<ffffffff81066db1>] warn_slowpath_fmt+0x41/0x50
Dec  9 14:27:03 acc-db-01 [248747.923951]  [<ffffffff814765e2>] dev_watchdog+0x262/0x270
Dec  9 14:27:03 acc-db-01 [248747.940388]  [<ffffffff8108b37d>] ? sched_clock_cpu+0xcd/0x110
Dec  9 14:27:03 acc-db-01 [248747.957298]  [<ffffffff8101a103>] ? native_sched_clock+0x13/0x60
Dec  9 14:27:03 acc-db-01 [248747.974338]  [<ffffffff81019e59>] ? sched_clock+0x9/0x10
Dec  9 14:27:03 acc-db-01 [248747.990651]  [<ffffffff81476380>] ? dev_watchdog+0x0/0x270
Dec  9 14:27:03 acc-db-01 [248748.007098]  [<ffffffff81077697>] run_timer_softirq+0x197/0x340
Dec  9 14:27:03 acc-db-01 [248748.024087]  [<ffffffff81094870>] ? tick_sched_timer+0x0/0xc0
Dec  9 14:27:03 acc-db-01 [248748.040982]  [<ffffffff8108f523>] ? ktime_get+0x63/0xe0
Dec  9 14:27:03 acc-db-01 [248748.057391]  [<ffffffff8106e3a7>] __do_softirq+0xb7/0x1e0
Dec  9 14:27:03 acc-db-01 [248748.073871]  [<ffffffff8109445a>] ? tick_program_event+0x2a/0x30
Dec  9 14:27:03 acc-db-01 [248748.090929]  [<ffffffff810142ec>] call_softirq+0x1c/0x30
Dec  9 14:27:03 acc-db-01 [248748.107042]  [<ffffffff81015cb5>] do_softirq+0x65/0xa0
Dec  9 14:27:03 acc-db-01 [248748.122742]  [<ffffffff8106e245>] irq_exit+0x85/0x90
Dec  9 14:27:03 acc-db-01 [248748.137184]  [<ffffffff81545f91>] smp_apic_timer_interrupt+0x71/0x9c
Dec  9 14:27:03 acc-db-01 [248748.153075]  [<ffffffff81013cb3>] apic_timer_interrupt+0x13/0x20
Dec  9 14:27:03 acc-db-01 [248748.168536]  <EOI>  [<ffffffff8130d337>] ? acpi_idle_enter_bm+0x28a/0x2be
Dec  9 14:27:03 acc-db-01 [248748.185007]  [<ffffffff8130d330>] ? acpi_idle_enter_bm+0x283/0x2be
Dec  9 14:27:03 acc-db-01 [248748.200691]  [<ffffffff81437507>] ? cpuidle_idle_call+0xa7/0x140
Dec  9 14:27:03 acc-db-01 [248748.216235]  [<ffffffff81011e73>] ? cpu_idle+0xb3/0x110
Dec  9 14:27:03 acc-db-01 [248748.231001]  [<ffffffff8153ad4b>] ? start_secondary+0xa8/0xaa
Dec  9 14:27:03 acc-db-01 [248748.246119] ---[ end trace d893f09a380f2ae2 ]---

you need this: http://launchpadlibrarian.net/58956370/lp614853.patch

In lieu of patching the kernel for now, wouldn't it be possible to switch schedulers at boot to avoid the bug?

That's the exact patch we have started using.

@lusis Apparently switching schedulers does not help. Haven't tested this independently.

@tweibley yes i worked with the original bug reporter on this a while back. yes bnx2 is a piece of shit and no switching schedulers doesnt help.

@ice799 Know anything about C states (see http://support.citrix.com/article/CTX127395) and Ubuntu? http://lists.us.dell.com/pipermail/linux-poweredge/2010-May/042280.html also.