kernel panic at nf_nat_setup_info.

Solution Unverified - Updated -

Issue

  • Kernel crashes with following panic message
BUG: unable to handle kernel NULL pointer dereference at 000000000000003e
IP: [<ffffffffa0281f79>] nf_nat_setup_info+0x5d9/0x740 [nf_nat]
PGD 2580c8067 PUD 27dd79067 PMD 1851c5067 PTE 0
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/mpdx/mpdh0/host6/target6:0:0/6:0:0:0/model
CPU 0 
..
Pid: 0, comm: swapper Tainted: P           ----------------   2.6.32-131.0.15.el6.x86_64 #1 PRIMERGY RX300 S6             
RIP: 0010:[<ffffffffa0281f79>]  [<ffffffffa0281f79>] nf_nat_setup_info+0x5d9/0x740 [nf_nat]
..
Process swapper (pid: 0, threadinfo ffffffff81a00000, task ffffffff81a2d020)
..
Call Trace:
 <IRQ> 
 [<ffffffffa028e1bb>] alloc_null_binding+0x5b/0xa0 [iptable_nat]
 [<ffffffffa028e56f>] nf_nat_fn+0x1bf/0x260 [iptable_nat]
 [<ffffffff8144782c>] nf_iterate+0x6c/0xb0
 [<ffffffff814524a0>] ? ip_local_deliver_finish+0x0/0x2d0
 [<ffffffff814478e4>] nf_hook_slow+0x74/0x100
 [<ffffffff814524a0>] ? ip_local_deliver_finish+0x0/0x2d0
 [<ffffffff814527ca>] ip_local_deliver+0x5a/0xa0
 [<ffffffff81451ccd>] ip_rcv_finish+0x12d/0x440
 [<ffffffff81452255>] ip_rcv+0x275/0x350
 [<ffffffff8141dd6b>] __netif_receive_skb+0x39b/0x6b0
 [<ffffffff81420048>] netif_receive_skb+0x58/0x60
 [<ffffffff81420150>] napi_skb_finish+0x50/0x70
 [<ffffffff81422489>] napi_gro_receive+0x39/0x50
 [<ffffffffa01ac1bb>] e1000_receive_skb+0x5b/0x90 [e1000e]
 [<ffffffffa01af638>] e1000_clean_rx_irq+0x2a8/0x520 [e1000e]
 [<ffffffffa01adcbe>] e1000_clean+0x7e/0x2b0 [e1000e]
 [<ffffffff814225a3>] net_rx_action+0x103/0x2f0
 [<ffffffff8106f717>] __do_softirq+0xb7/0x1e0
 [<ffffffff810d69d6>] ? handle_IRQ_event+0xf6/0x170
 [<ffffffff8100c2cc>] call_softirq+0x1c/0x30
 [<ffffffff8100df05>] do_softirq+0x65/0xa0
 [<ffffffff8106f505>] irq_exit+0x85/0x90
 [<ffffffff814e3505>] do_IRQ+0x75/0xf0
 [<ffffffff8100bad3>] ret_from_intr+0x0/0x11
 <EOI> 
 [<ffffffff812bb86e>] ? intel_idle+0xde/0x170
 [<ffffffff812bb851>] ? intel_idle+0xc1/0x170
 [<ffffffff813eccb7>] cpuidle_idle_call+0xa7/0x140
 [<ffffffff81009e96>] cpu_idle+0xb6/0x110
 [<ffffffff814c376a>] rest_init+0x7a/0x80
 [<ffffffff81bbdf28>] start_kernel+0x41d/0x429
 [<ffffffff81bbd33a>] x86_64_start_reservations+0x125/0x129
 [<ffffffff81bbd438>] x86_64_start_kernel+0xfa/0x109

Environment

  • Red Hat Enterprise Linux 6
  • kernel version earlier than fixed versions

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