UEK Kernel panic on blk_finish_request

(Doc ID 2359049.1)

Last updated on FEBRUARY 14, 2018

Applies to:

Linux OS - Version Oracle Linux 7.2 with Unbreakable Enterprise Kerne [4.1.12] and later
Information in this document applies to any platform.

Symptoms

A server running Oracle Linux 7 with the kernel: 4.1.12-94.5.7.el7uek.x86_64 reboots unexpectedly, with a stack trace similar to the following:

PID: 0 TASK: ffff885fa5a4aa00 CPU: 20 COMMAND: "swapper/20"
#0 [ffff88607e8039e0] machine_kexec at ffffffff8105f2bb
#1 [ffff88607e803a50] crash_kexec at ffffffff81116252
#2 [ffff88607e803b20] oops_end at ffffffff8101b868
#3 [ffff88607e803b50] die at ffffffff8101be3b
#4 [ffff88607e803b80] do_trap at ffffffff81017fdc
#5 [ffff88607e803be0] do_error_trap at ffffffff81018517
#6 [ffff88607e803cc0] do_invalid_op at ffffffff81018d70
#7 [ffff88607e803cd0] invalid_op at ffffffff8173b61e
[exception RIP: blk_finish_request+240]
RIP: ffffffff8130f2f0 RSP: ffff88607e803d88 RFLAGS: 00010002
RAX: 0000000000000246 RBX: ffff883144a1d9e0 RCX: 0000000000009f3c
RDX: 000000009f3c9f3c RSI: 0000000000000000 RDI: ffff883144a1d9e0
RBP: ffff88607e803d98 R8: 0000000000200008 R9: ffff885fa5a4b800
R10: 0000000000000000 R11: 0000000000000400 R12: 0000000000000000
R13: ffff880197e94540 R14: 0000000000000000 R15: ffff881cbc8d0000
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#8 [ffff88607e803da0] scsi_end_request at ffffffff814ce487
#9 [ffff88607e803df0] scsi_io_completion at ffffffff814d04f6
#10 [ffff88607e803e60] scsi_finish_command at ffffffff814c6dff
#11 [ffff88607e803e90] scsi_softirq_done at ffffffff814cfbc2
#12 [ffff88607e803ec0] blk_done_softirq at ffffffff81316290
#13 [ffff88607e803f10] __do_softirq at ffffffff8108a76b
#14 [ffff88607e803f80] irq_exit at ffffffff8108ac95
#15 [ffff88607e803fa0] smp_call_function_single_interrupt at ffffffff81052ad5
#16 [ffff88607e803fb0] call_function_single_interrupt at ffffffff8173ad3e
--- <IRQ stack> ---
#17 [ffff882fa6497da8] call_function_single_interrupt at ffffffff8173ad3e
[exception RIP: cpuidle_enter_state+204]
RIP: ffffffff815bd56c RSP: ffff882fa6497e58 RFLAGS: 00000246
RAX: 001c0850d855ccf5 RBX: ffff88607e810fc0 RCX: 0000000000000018
RDX: 00000000005ed0a1 RSI: ffff882fa6498000 RDI: ffffffff81b19c00
RBP: ffff882fa6497e98 R8: 0000000000000018 R9: 0000000000001d7b
R10: 0000000000001f3b R11: 0000000000000499 R12: c0eaf3f0b492801c
R13: 0000000000000082 R14: 0000000000000014 R15: 0000000000000040
ORIG_RAX: ffffffffffffff04 CS: 0010 SS: 0018
#18 [ffff882fa6497ea0] cpuidle_enter at ffffffff815bd707
#19 [ffff882fa6497eb0] cpu_startup_entry at ffffffff810cd6ec
#20 [ffff882fa6497f20] start_secondary at ffffffff810534a3

 

Cause

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