OL7 Kernel Panic "Unable To Handle Kernel NULL Pointer Dereference" (Exception RIP: NFS4_DO_OPEN+1408)

(Doc ID 2313124.1)

Last updated on OCTOBER 06, 2017

Applies to:

Linux OS - Version Oracle Linux 7.0 and later
Linux x86-64

Symptoms

Oracle Linux 7 server crashes by throwing the below output in vmcore

KERNEL: /share/linuxrpm/vmlinux_repo/64/3.10.0-123.13.2.el7.x86_64/vmlinux
DUMPFILE: vmcore [PARTIAL DUMP]
CPUS: 4
DATE: Tue Sep 12 19:50:02 2017
UPTIME: 3 days, 14:54:10
LOAD AVERAGE: 0.97, 0.63, 0.56
TASKS: 708
NODENAME:test
RELEASE: 3.10.0-123.13.2.el7.x86_64
VERSION: #1 SMP Thu Dec 18 10:51:45 PST 2014

MACHINE: x86_64 (2200 Mhz)
MEMORY: 16 GB
PANIC: "BUG: unable to handle kernel NULL pointer dereference at 0000000000000018" <<<<<<<<<<<<
PID: 440428
COMMAND: "amqzlaa0"
TASK: ffff8803ff0b5b00 [THREAD_INFO: ffff88008ebc8000]
CPU: 1
STATE: TASK_RUNNING (PANIC)

#6 [ffff88008ebc9878] __do_page_fault at ffffffff815eddac
/usr/src/debug/kernel-3.10.0-123.13.2.el7/linux-3.10.0-123.13.2.el7.x86_64/arch/x86/mm/fault.c: 1173
#7 [ffff88008ebc9978] do_page_fault at ffffffff815ede8a
/usr/src/debug/kernel-3.10.0-123.13.2.el7/linux-3.10.0-123.13.2.el7.x86_64/arch/x86/mm/fault.c: 1233
#8 [ffff88008ebc99a0] page_fault at ffffffff815ea0c8
/usr/src/debug/kernel-3.10.0-123.13.2.el7/linux-3.10.0-123.13.2.el7.x86_64/arch/x86/kernel/entry_64.S: 1511
[exception RIP: nfs4_do_open+1408] <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
RIP: ffffffffa057ab10 RSP: ffff88008ebc9a50 RFLAGS: 00010202
RAX: 0000000000000018 RBX: ffff880426684000 RCX: 0000000000008000
RDX: 0000000000000000 RSI: ffff880426684250 RDI: ffff8803f4ea1670
RBP: ffff88008ebc9b68 R8: 0000000000000000 R9: 0000000000000039
R10: ffffffff81144377 R11: ffffea00109a2780 R12: ffff880424ab2d80
R13: ffff880424953800 R14: ffff880424ab2cc0 R15: 00000000000080c2
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#9 [ffff88008ebc9b70] nfs4_atomic_open at ffffffffa057aff7 [nfsv4]
#10 [ffff88008ebc9bc8] scdrv_nfs4_vop_open_context at ffffffffa04ac441 [scdrv]
#11 [ffff88008ebc9c08] fsh_new_open_context at ffffffffa04b297d [scdrv]

[312542.580730] Call Trace:
[312542.580764] [<ffffffffa057aff7>] nfs4_atomic_open+0xf7/0x110 [nfsv4]
[312542.580797] [<ffffffffa04ac441>] scdrv_nfs4_vop_open_context+0xb1/0x100 [scdrv]
[312542.580827] [<ffffffffa057af00>] ? nfs4_do_open+0x970/0x970 [nfsv4]
[312542.580858] [<ffffffffa04b297d>] fsh_new_open_context+0x3d/0x60 [scdrv]
[312542.580908] [<ffffffffa0537ff8>] nfs_atomic_open+0x178/0x3c0 [nfs]
[312542.580938] [<ffffffff811bf615>] do_last+0x9d5/0x1220
[312542.580961] [<ffffffff811bff22>] path_openat+0xc2/0x4c0
[312542.580983] [<ffffffff8108ed38>] ? __wake_up_common+0x58/0x90
[312542.581008] [<ffffffff811c0b3b>] do_filp_open+0x4b/0xb0
[312542.581061] [<ffffffff810e724d>] ? __audit_getname+0x9d/0xa0
[312542.581084] [<ffffffff811cd2f7>] ? __alloc_fd+0xa7/0x130
[312542.581106] [<ffffffff811ae9e3>] do_sys_open+0xf3/0x1f0
[312542.581128] [<ffffffff811aeafe>] SyS_open+0x1e/0x20
[312542.581148] [<ffffffff815f2a19>] system_call_fastpath+0x16/0x1b
[312542.581172] Code: ff ff ff 48 8b b5 48 ff ff ff 48 89 04 24 e8 98 c5 ff ff 85 c0 0f 84 4d 02 00 00 f6 83 a8 03 00 00 02 74 0a 48 8b 85 00 ff ff ff <83> 08 01 48 8b 83 20 03 00 00 48 85 c0 74 31 48 83 bd 08 ff ff
[312542.583322] RIP [<ffffffffa057ab10>] nfs4_do_open+0x580/0x970 [nfsv4]
[312542.584435] RSP <ffff88008ebc9a50>
[312542.585350] CR2: 0000000000000018

 

 

 

Cause

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