OL: UEK4 - Unexpected Reboots of Server Running with Kernel 4.1.12-37.4.1.el6uek.x86_64

(Doc ID 2376567.1)

Last updated on APRIL 04, 2018

Applies to:

Linux OS - Version Oracle Linux 6.8 with Unbreakable Enterprise Kernel [4.1.12] and later
Linux x86-64

Symptoms

Unexpected reboots of server running with UEK4 kernel 4.1.12-37.4.1.el6uek.x86_64

[ 72.100343] mtrr: no MTRR for c5000000,7f0000 found
[ 7223.459945] perf interrupt took too long (2510 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[ 8753.356104] perf interrupt took too long (5005 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[22798.875357] RPC: Registered named UNIX socket transport module.
[22798.875362] RPC: Registered udp transport module.
[22798.875364] RPC: Registered tcp transport module.
[22798.875365] RPC: Registered tcp NFSv4.1 backchannel transport module.
[22798.940357] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[22799.023531] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[22799.028634] NFSD: starting 90-second grace period (net ffffffff81b8b040)
[86696.719134] rpc-srv/tcp: nfsd: got error -32 when sending 24 bytes - shutting down socket
[86797.165073] rpc-srv/tcp: nfsd: got error -32 when sending 24 bytes - shutting down socket
[143099.381673] rpc-srv/tcp: nfsd: got error -32 when sending 24 bytes - shutting down socket
[273747.126381] rpc-srv/tcp: nfsd: got error -32 when sending 24 bytes - shutting down socket
[420389.759038] rpc-srv/tcp: nfsd: got error -32 when sending 24 bytes - shutting down socket
[431500.095708] nfsd: peername failed (err 107)!
[433105.693002] general protection fault: 0000 [#1] SMP
[433105.693008] Modules linked in: nfsd lockd grace nfs_acl auth_rpcgss sunrpc mptctl mptbase ipmi_devintf autofs4 cpufreq_powersave 8021q mrp garp stp llc bonding ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 nls_utf8 uinput iTCO_wdt iTCO_vendor_support pcspkr btrfs raid6_pq xor sb_edac edac_core i2c_i801 lpc_ich mfd_core cdc_ether usbnet mii ixgbe dca ptp pps_core vxlan udp_tunnel ip6_udp_tunnel mdio sg ses enclosure ipmi_ssif i2c_core ipmi_si ipmi_msghandler acpi_pad ext4 jbd2 mbcache sd_mod ahci libahci qla2xxx scsi_transport_fc megaraid_sas mxm_wmi wmi dm_mirror dm_region_hash dm_log dm_mod
[433105.693074] CPU: 1 PID: 307 Comm: kswapd0 Not tainted 4.1.12-37.4.1.el6uek.x86_64 #2
[433105.693077] Hardware name: Oracle Corporation ORACLE SERVER X6-2L/ASM,MOBO TRAY,2U, BIOS 39070200 03/29/2017
[433105.693081] task: ffff88085b25aa00 ti: ffff881056e98000 task.ti: ffff881056e98000
[433105.693083] RIP: 0010:[] [] detach_if_pending+0x43/0x100 <<<<<<<<<<<<<<<< race condition on detach_if_pending
[433105.693091] RSP: 0018:ffff881056e9b9e8 EFLAGS: 00010002
[433105.693093] RAX: dead000000200200 RBX: ffffffffa11a99a0 RCX: 0000000000000082
[433105.693095] RDX: ffff88107e610168 RSI: ffff88085f84eb80 RDI: ffffffffa11a99a0
[433105.693097] RBP: ffff881056e9ba08 R08: ffff881056e9b9c8 R09: 0000000000008000
[433105.693100] R10: 0000000000000000 R11: 0000000000009700 R12: ffff88085f84eb80
[433105.693101] R13: 0000000000000000 R14: 0000000000000001 R15: ffff881056e9bab0
[433105.693104] FS: 0000000000000000(0000) GS:ffff88085f840000(0000) knlGS:0000000000000000
[433105.693107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[433105.693109] CR2: ffffffffff600400 CR3: 0000000001a72000 CR4: 00000000003406e0
[433105.693111] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[433105.693113] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[433105.693114] Stack:
[433105.693116] ffffffffa11a99a0 ffff88085f84eb80 0000000000000000 ffff88085f495c00
[433105.693120] ffff881056e9ba48 ffffffff810e9fa9 ffff881056e9ba18 0000000000000082
[433105.693124] ffff881056e9ba28 ffffffffa11a9980 ffff881056e9bab0 0000000000002000
[433105.693129] Call Trace:
[433105.693143] [] ? cache_cleaner+0x20/0xffffffffffff7cef [nfsd]
[433105.693147] [] del_timer+0x49/0x70
[433105.693157] [] ? nfsd_nlm_ops+0x20/0xffffffffffff7d0f [nfsd]
[433105.693164] [] try_to_grab_pending+0x109/0x180
[433105.693172] [] ? nfsd_nlm_ops+0x20/0xffffffffffff7d0f [nfsd]
[433105.693177] [] mod_delayed_work_on+0x42/0x90
[433105.693186] [] prune_cache_entries+0x101/0x120 [nfsd]
[433105.693195] [] ? cache_cleaner+0x80/0xffffffffffff7cef [nfsd]
[433105.693204] [] nfsd_reply_cache_scan+0xe/0x10 [nfsd]
[433105.693210] [] do_shrink_slab+0x13f/0x290
[433105.693214] [] ? shrink_lruvec+0x2fc/0x340
[433105.693222] [] ? cache_cleaner+0x80/0xffffffffffff7cef [nfsd]
[433105.693226] [] shrink_slab+0xaf/0x120
[433105.693230] [] shrink_zone+0x339/0x340
[433105.693234] [] kswapd_shrink_zone+0xe0/0x160
[433105.693238] [] balance_pgdat+0x343/0x480
[433105.693242] [] kswapd+0x102/0x260
[433105.693246] [] ? balance_pgdat+0x480/0x480
[433105.693249] [] ? balance_pgdat+0x480/0x480
[433105.693253] [] kthread+0xce/0xf0
[433105.693257] [] ? kthread_freezable_should_stop+0x70/0x70
[433105.693263] [] ret_from_fork+0x42/0x70
[433105.693266] [] ? kthread_freezable_should_stop+0x70/0x70
[433105.693268] Code: 74 24 18 0f 1f 44 00 00 31 c0 41 89 d6 48 8b 17 48 89 fb 49 89 f4 48 85 d2 74 6a 0f 1f 44 00 00 48 8b 43 08 45 84 f6 48 89 42 08 89 10 74 07 48 c7 03 00 00 00 00 f6 43 18 01 49 bd 00 02 20
[433105.693311] RIP [] detach_if_pending+0x43/0x100
[433105.693315] RSP

Changes

 

Cause

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