RHEL7.1:Kernel BUG at net/ipv6/ip6_fib.c:1303!

Issue

• Kernel BUG at net/ipv6/ip6_fib.c:1303!
• Kernel panic with below backtraces:

crash> bt
PID: 0      TASK: ffff882f76e02d80  CPU: 4   COMMAND: "swapper/4"
 #0 [ffff882fbf9038e8] machine_kexec at ffffffff8104c4eb
 #1 [ffff882fbf903948] crash_kexec at ffffffff810e2182
 #2 [ffff882fbf903a18] oops_end at ffffffff8160cb88
 #3 [ffff882fbf903a40] no_context at ffffffff815fd601
 #4 [ffff882fbf903a90] __bad_area_nosemaphore at ffffffff815fd697
 #5 [ffff882fbf903ad8] bad_area_nosemaphore at ffffffff815fd801
 #6 [ffff882fbf903ae8] __do_page_fault at ffffffff8160f9ce
 #7 [ffff882fbf903be8] do_page_fault at ffffffff8160fbca
 #8 [ffff882fbf903c10] page_fault at ffffffff8160be08
    [exception RIP: fib6_age+146]
    RIP: ffffffff815b9022  RSP: ffff882fbf903cc8  RFLAGS: 00010246
    RAX: 0000000000000000  RBX: ffff882dd6b98e10  RCX: 000000022dac9380
    RDX: ffff882dd6b98ec8  RSI: 0000000000000000  RDI: ffff882dd6b98e10
    RBP: ffff882fbf903cd0   R8: ffffffff819eaec0   R9: ffff882f768c4000
    R10: 0000000000000002  R11: 0000000000000005  R12: ffff882fbf903d60
    R13: 0000000000000000  R14: ffffffff815b8f90  R15: ffff885f5c5f3198
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #9 [ffff882fbf903cd8] fib6_clean_node at ffffffff815bb1c7
#10 [ffff882fbf903d18] fib6_walk_continue at ffffffff815b8f76
#11 [ffff882fbf903d30] fib6_walk at ffffffff815b98f3
#12 [ffff882fbf903d50] fib6_clean_all at ffffffff815bb306
#13 [ffff882fbf903df8] fib6_run_gc at ffffffff815bb424
#14 [ffff882fbf903e18] fib6_gc_timer_cb at ffffffff815bb4e3
#15 [ffff882fbf903e28] call_timer_fn at ffffffff8107df66
#16 [ffff882fbf903e60] run_timer_softirq at ffffffff8107fddf
#17 [ffff882fbf903ed8] __do_softirq at ffffffff81077b3f
#18 [ffff882fbf903f48] call_softirq at ffffffff81615c9c
#19 [ffff882fbf903f60] do_softirq at ffffffff81015d95
#20 [ffff882fbf903f80] irq_exit at ffffffff81077ed5
#21 [ffff882fbf903f98] smp_apic_timer_interrupt at ffffffff81616915
#22 [ffff882fbf903fb0] apic_timer_interrupt at ffffffff81614fdd

• Please note: there can be other back traces caused by the same under-lying bug. But all back traces will show the Ipv6 routing routines.