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Exadata Compute Node Continously Going Into Boot Loop (Doc ID 2370869.1)

Last updated on AUGUST 04, 2018

Applies to:

Linux OS - Version Oracle Linux 6.9 with Unbreakable Enterprise Kernel [2.6.39] and later
Linux x86-64

Symptoms

Exadata hangs with below messages

Feb 10 23:12:00 test kernel: [ 590.180323] WARNING: CPU: 5 PID: 79235 at kernel/trace/ftrace.c:1969 ftrace_bug+0x28a/0x330()
Feb 10 23:12:00 test kernel: [ 590.180324] Modules linked in: oracleacfs(PO) oracleadvm(PO) oracleoks(PO) sisfim(PE) nfsd nfsv3 nfs_acl rpcsec_gss_krb5 auth
_rpcgss nfsv4 nfs fscache lockd sunrpc grace ipmi_poweroff ipmi_devintf 8021q mrp garp stp llc bonding rds_rdma rds ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad mlx4_ib mlx4_
core bnx2i cnic uio cxgb4i libcxgbi cxgb4 ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi dm_round_robin dm_mu
ltipath fuse iTCO_wdt iTCO_vendor_support sb_edac edac_core i2c_i801 lpc_ich mfd_core sg ixgbe dca ptp pps_core vxlan udp_tunnel ip6_udp_tunnel mdio ipmi_ssif i2c_core ipmi
_si ipmi_msghandler wmi acpi_pad ipv6 sisips(PE) ext4 jbd2 mbcache sd_mod ahci libahci megaraid_sas dm_mirror dm_region_hash dm_log dm_mod
Feb 10 23:12:00 test kernel: [ 590.180359] CPU: 5 PID: 79235 Comm: modprobe.ksplic Tainted: P OE 4.1.12-61.28.1.el6uek.x86_64 #2
Feb 10 23:12:00 test kernel: [ 590.180360] Hardware name: Oracle Corporation ORACLE SERVER X6-2/ASM,MOTHERBOARD,1U, BIOS 38070000 12/16/2016
Feb 10 23:12:00 test kernel: [ 590.180362] 0000000000000000 ffff886797e03bf8 ffffffff81698a60 0000000000000000
Feb 10 23:12:00 test kernel: [ 590.180363] 00000000000007b1 ffff886797e03c38 ffffffff810845e5 ffff886797e03c28
Feb 10 23:12:00 test kernel: [ 590.180365] ffffffffa029f500 ffffffffa029f500 ffff886788caf4a0 ffff88679fd62580
Feb 10 23:12:00 test kernel: [ 590.180367] Call Trace:
Feb 10 23:12:00 test kernel: [ 590.180373] [] dump_stack+0x63/0x83
Feb 10 23:12:00 test kernel: [ 590.180378] [] warn_slowpath_common+0x95/0xe0
Feb 10 23:12:00 test kernel: [ 590.180382] [] ? 0xffffffffa029f500
Feb 10 23:12:00 test kernel: [ 590.180385] [] ? 0xffffffffa029f500
Feb 10 23:12:00 test kernel: [ 590.180386] [] warn_slowpath_null+0x1a/0x20
Feb 10 23:12:00 test kernel: [ 590.180387] [] ftrace_bug+0x28a/0x330
Feb 10 23:12:00 test kernel: [ 590.180390] [] ftrace_update_code+0x1ca/0x300
Feb 10 23:12:00 test kernel: [ 590.180392] [] ? 0xffffffffa0313d40
Feb 10 23:12:00 test kernel: [ 590.180394] [] ? 0xffffffffa0312f70
Feb 10 23:12:00 test kernel: [ 590.180396] [] ? 0xffffffffa0312f70
Feb 10 23:12:00 test kernel: [ 590.180398] [] ? 0xffffffffa0313d40
Feb 10 23:12:00 test kernel: [ 590.180399] [] ftrace_process_locs+0x141/0x210
Feb 10 23:12:00 test kernel: [ 590.180402] [] ? 0xffffffffa0313d40
Feb 10 23:12:00 test kernel: [ 590.180403] [] ftrace_module_init+0x2f/0x40
Feb 10 23:12:00 test kernel: [ 590.180408] [] load_module+0x3f1/0x720
Feb 10 23:12:00 test kernel: [ 590.180409] [] ? module_sect_show+0x30/0x30
Feb 10 23:12:00 test kernel: [ 590.180411] [] SyS_init_module+0x94/0xc0
Feb 10 23:12:00 test kernel: [ 590.180423] [] hook_init_module+0x201/0x220 [sisips]
Feb 10 23:12:00 test kernel: [ 590.180443] [] ? __audit_syscall_entry+0xac/0x110
Feb 10 23:12:00 test kernel: [ 590.180447] [] ? do_audit_syscall_entry+0x6c/0x70
Feb 10 23:12:00 test kernel: [ 590.180449] [] ? syscall_trace_leave+0xf1/0x160
Feb 10 23:12:00 test kernel: [ 590.180451] [] ? system_call_fastpath+0x12/0x71
Feb 10 23:12:00 test kernel: [ 590.180453] ---[ end trace 25b0476fd95da6b2 ]---
Feb 10 23:12:00 test kernel: [ 590.180453] ftrace failed to modify [] 0xffffffffa029f500
Feb 10 23:12:00 test kernel: [ 590.180455] actual: e8:3b:8e:fe:ff
Feb 10 23:12:00 test kernel: [ 590.180457] ftrace record flags: 0
Feb 10 23:12:00 test kernel: [ 590.180458] (0) expected tramp: ffffffff8169fbc0
Feb 10 23:12:00 test kernel: [ 590.180749] ktap: registering major 242 dev 0xf200000guard_ktap_100595_
Feb 10 23:12:00 test kernel: [ 590.180751] ktap: sys_call_table_addr ffffffff81a4f620
Feb 10 23:12:00 test kernel: [ 590.180752] ktap: ia32_sys_call_table_addr ffffffff81a50500
Feb 10 23:12:00 test kernel: [ 590.180798] (v 100595) GUARD-02: 79235 ktap_init_mid: guard_ktap loading; version=10.1.2_r100595_v1
0_1_2_1, ktap_build_number=100595 10.1.2_r100595_v10_1_2_120161121_1412100595tap/unix/ktapBUILD_TAG=10.1.2_r100595_v10_1_2_1

Cause

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