RHEL-6 system crashed with message "kernel BUG at net/ipv4/tcp_output.c:1908!"

Issue

• RHEL-6 kernel panicked in the function tcp_retransmit_skb().

kernel BUG at net/ipv4/tcp_output.c:1908!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/devices/system/cpu/cpu3/cache/index2/shared_cpu_map
CPU 0 
Modules linked in: nfs lockd fscache nfs_acl auth_rpcgss ipmi_si mpt2sas scsi_transport_sas raid_class mptctl mptbase dell_rbu autofs4 sunrpc ipmi_devintf ipmi_msghandler ipv6 power_meter ses enclosure sg bnx2 microcode dcdbas iTCO_wdt iTCO_vendor_support serio_raw i7core_edac edac_core ext4 mbcache jbd2 sr_mod cdrom usb_storage sd_mod crc_t10dif pata_acpi ata_generic ata_piix megaraid_sas dm_mirror dm_region_hash dm_log dm_mod [last unloaded: ipmi_si]

Pid: 0, comm: swapper Not tainted 2.6.32-220.7.1.el6.x86_64 #1 Dell Inc. PowerEdge R710/0MD99X
RIP: 0010:[<ffffffff8147db1f>]  [<ffffffff8147db1f>] tcp_retransmit_skb+0x6f/0x5e0
RSP: 0018:ffff880036803840  EFLAGS: 00010a93
RAX: 00000000c34ece8c RBX: ffff8804221b2f00 RCX: 0000000000000001
RDX: 00000000709e7933 RSI: ffff8801004c2180 RDI: ffff8804221b2f00
RBP: ffff8800368038a0 R08: 000000000000000d R09: 00000000709e79c0
R10: 0000000000000002 R11: 00000000c34ee418 R12: ffff8801004c2180
R13: ffff8801004c21b8 R14: ffff8804221b2fc8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880036800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00007f18d91cd850 CR3: 0000000422411000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffffffff81a00000, task ffffffff81a8d020)
Stack:
 ffff880036803900 ffffffff81474672 ffff880000000000 3c2e81e94886d26e
<0> ffff880036803890 ffff880100000001 ffff8801c34ee418 ffff8804221b2f00
<0> ffff8801004c2180 0000000000000000 ffff8804221b2fc8 0000000000000000
Call Trace:
 <IRQ> 
 [<ffffffff81474672>] ? tcp_sacktag_write_queue+0x412/0xb70
 [<ffffffff8147f976>] tcp_xmit_retransmit_queue+0x196/0x320
 [<ffffffff814799c3>] tcp_ack+0x13d3/0x2300
 [<ffffffff8147757b>] ? tcp_validate_incoming+0x30b/0x3a0
 [<ffffffff8147acf8>] tcp_rcv_established+0x408/0x800
 [<ffffffff8147bb13>] ? tcp_rcv_state_process+0xa23/0xa30
 [<ffffffff8105e65c>] ? try_to_wake_up+0x24c/0x3e0
 [<ffffffff81482d23>] tcp_v4_do_rcv+0x2e3/0x430
 [<ffffffff8105e802>] ? default_wake_function+0x12/0x20
 [<ffffffff8118baf6>] ? pollwake+0x56/0x60
 [<ffffffff81484511>] tcp_v4_rcv+0x4e1/0x860
 [<ffffffff8107cff4>] ? mod_timer+0x144/0x220
 [<ffffffff8146229d>] ip_local_deliver_finish+0xdd/0x2d0
 [<ffffffff81462528>] ip_local_deliver+0x98/0xa0
 [<ffffffff814619ed>] ip_rcv_finish+0x12d/0x440
 [<ffffffff81461f75>] ip_rcv+0x275/0x350
 [<ffffffff8142bf7b>] __netif_receive_skb+0x49b/0x6e0
 [<ffffffff8142e028>] netif_receive_skb+0x58/0x60
 [<ffffffff8142e130>] napi_skb_finish+0x50/0x70
 [<ffffffff814307b9>] napi_gro_receive+0x39/0x50
 [<ffffffffa01a6d4f>] bnx2_poll_work+0xd4f/0x1270 [bnx2]
 [<ffffffff810dbb98>] ? handle_edge_irq+0x98/0x180
 [<ffffffffa01a72ad>] bnx2_poll_msix+0x3d/0xc0 [bnx2]
 [<ffffffff814308d3>] net_rx_action+0x103/0x2f0
 [<ffffffff81094dd3>] ? hrtimer_get_next_event+0xc3/0x100
 [<ffffffff81072001>] __do_softirq+0xc1/0x1d0
 [<ffffffff810d94a0>] ? handle_IRQ_event+0x60/0x170
 [<ffffffff8100c24c>] call_softirq+0x1c/0x30
 [<ffffffff8100de85>] do_softirq+0x65/0xa0
 [<ffffffff81071de5>] irq_exit+0x85/0x90
 [<ffffffff814f4dc5>] do_IRQ+0x75/0xf0
 [<ffffffff8100ba53>] ret_from_intr+0x0/0x11
 <EOI> 
 [<ffffffff812c4b0e>] ? intel_idle+0xde/0x170
 [<ffffffff812c4af1>] ? intel_idle+0xc1/0x170
 [<ffffffff813fa027>] cpuidle_idle_call+0xa7/0x140
 [<ffffffff81009e06>] cpu_idle+0xb6/0x110
 [<ffffffff814d420a>] rest_init+0x7a/0x80
 [<ffffffff81c1ff76>] start_kernel+0x424/0x430
 [<ffffffff81c1f33a>] x86_64_start_reservations+0x125/0x129
 [<ffffffff81c1f438>] x86_64_start_kernel+0xfa/0x109
Code: 93 a8 00 00 00 39 d0 0f 4f c2 39 c8 7c 25 4d 8d 6c 24 38 8b 83 68 04 00 00 41 8b 55 18 39 c2 79 2a 41 39 45 1c 0f 89 db 02 00 00 <0f> 0b eb fe 39 c2 74 50 41 be f5 ff ff ff 48 83 c4 38 44 89 f0 
RIP  [<ffffffff8147db1f>] tcp_retransmit_skb+0x6f/0x5e0   
 RSP <ffff880036803840>