Kernel bug - NLM: Fix Oops in nlmclnt_mark_reclaim() (Doc ID 1270622.1)

Last updated on MARCH 08, 2017

Applies to:

Linux OS - Version 4.4.69-25 and later
Information in this document applies to any platform.

Symptoms


System was in outage. Vmcore analysis shows log below:

Nov 18 23:53:36 testxx kernel: lockd: server xx.x.xx.xx not responding, still trying
Nov 18 23:53:52 testxx kernel: lockd: server xx.x.xx.xx not responding, still trying
Nov 18 23:55:30 testxx kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000000c
Nov 18 23:55:30 testxx kernel: printing eip:
Nov 18 23:55:30 testxx kernel: f88862c2
Nov 18 23:55:30 testxx kernel: *pde = 0972d001
Nov 18 23:55:30 testxx kernel: Oops: 0000 [#1]
Nov 18 23:55:30 testxx kernel: SMP
Nov 18 23:55:30 testxx kernel: Modules linked in: ext3 jbd md5 ipv6 autofs4 cpufreq_powersave dm_mod button battery ac 8139cp mii floppy xen_vbd xen_vnif nfs lockd nfs_acl sunrpc
Nov 18 23:55:30 testxx kernel: CPU: 3
Nov 18 23:55:30 testxx kernel: EIP: 0060:[<f88862c2>] Not tainted VLI
Nov 18 23:55:30 testxx kernel: EFLAGS: 00010246 (2.6.9-78.0.13.0.1.ELsmp)
Nov 18 23:55:30 testxx kernel: EIP is at nlmclnt_mark_reclaim+0x3b/0x53 [lockd]
Nov 18 23:55:30 testxx kernel: eax: 00000000 ebx: dfd80940 ecx: f713896c edx: f7138970
Nov 18 23:55:30 testxx kernel: esi: 00000017 edi: dfc13e00 ebp: 00000004 esp: c9687f58
Nov 18 23:55:30 testxx kernel: ds: 007b es: 007b ss: 0068
Nov 18 23:55:30 testxx kernel: Process lockd (pid: 2220, threadinfo=c9687000 task=f72ee1f0)
Nov 18 23:55:30 testxx kernel: Stack: dfd80940 f8886366 dfd80940 dfc16800 f888de30 8b020002 3fe0e00a 00000000
Nov 18 23:55:30 testxx kernel: 00000000 dfc16800 f888cf9c f8894d00 c94b8014 f8887db3 dfc16864 00000000
Nov 18 23:55:30 testxx kernel: f8894d00 dfcca804 dfc16800 f8867653 000186b5 c94b8008 c94b8014 dfc16864
Nov 18 23:55:30 testxx kernel: Call Trace:
Nov 18 23:55:30 testxx kernel: [<f8886366>] nlmclnt_recovery+0x8c/0x12e [lockd]
Nov 18 23:55:30 testxx kernel: [<f888de30>] nlm4svc_proc_sm_notify+0xd2/0x100 [lockd]
Nov 18 23:55:30 testxx kernel: [<f888cf9c>] nlm4svc_decode_reboot+0x0/0x74 [lockd]
Nov 18 23:55:30 testxx kernel: [<f8887db3>] nlmsvc_dispatch+0x7c/0x122 [lockd]
Nov 18 23:55:30 testxx kernel: [<f8867653>] svc_process+0x42a/0x707 [sunrpc]
Nov 18 23:55:30 testxx kernel: [<f8887fdc>] lockd+0x183/0x270 [lockd]
Nov 18 23:55:30 testxx kernel: [<f8887e59>] lockd+0x0/0x270 [lockd]
Nov 18 23:55:30 testxx kernel: [<c01041f5>] kernel_thread_helper+0x5/0xb
Nov 18 23:55:30 testxx kernel: Code: fa 2c d0 33 c0 74 3a 8d 4a fc f6 41 30 01 74 2d 8b 41 2c 8b 40 08 8b 40 10 8b 80 a4 00 00 00 81 78 38 69 69 00 00 75 15 8b 41 5c <39> 58 0c 75 0d 8b 41 58 a8 01 74 06 83 c8 02 89 41 58 8b 12 eb
Nov 18 23:55:30 testxx kernel: <0>Fatal exception: panic in 5 seconds

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms