[LU-76] Racer kernel panic in _ldlm_lock_debug

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Minor
• Fix Version/s: Lustre 1.8.6
• Affects Version/s: Lustre 2.0.0, Lustre 2.1.0
• Severity: 3
• Bugzilla ID: 24,099
• Assignee: Oleg Drokin
• Reporter: Oleg Drokin

Description

Oracle reports this failure:
2010-11-02 12:42:17 Lustre: DEBUG MARKER: == runracer test 1: racer on clients: sfire31,sfire32
DURATION=120 ================================== 12:39:34 (1288723174)
2010-11-02 12:42:40 general protection fault: 0000 [1] SMP
2010-11-02 12:42:40 last sysfs file: /devices/pci0000:00/0000:00:09.0/irq
2010-11-02 12:42:40 CPU 3
2010-11-02 12:42:40 Modules linked in: llite_lloop(U) lustre(U) mgc(U) lov(U) mdc(U) lmv(U) fid(U)
fld(U) lquota(U) osc(U) obdecho(U) ksocklnd(U) ptlrpc(U) obdclass(U) lnet(U) lvfs(U) libcfs(U)
autofs4 hidp rfcomm l2cap bluetooth ipv6 xfrm_nalgo crypto_api loop dm_mirror dm_log dm_multipath
scsi_dh dm_mod raid1 video backlight sbs power_meter i2c_ec dell_wmi wmi button battery asus_acpi
acpi_memhotplug ac parport_pc lp parport sd_mod sg sata_nv pcspkr ohci_hcd i2c_nforce2 shpchp
libata i2c_core ehci_hcd scsi_mod forcedeth k8temp k8_edac edac_mc hwmon serio_raw tg3 nfs lockd
fscache nfs_acl sunrpc
2010-11-02 12:42:40 Pid: 27192, comm: ldlm_bl_08 Tainted: G 2.6.18-194.17.1.0.1.el5 #1
2010-11-02 12:42:40 RIP: 0010:[<ffffffff885c4215>] [<ffffffff885c4215>]
:ptlrpc:_ldlm_lock_debug+0x545/0x6d0
2010-11-02 12:42:40 RSP: 0000:ffff81010f451c80 EFLAGS: 00010246
2010-11-02 12:42:40 RAX: 5a5a5a5a5a5a5a5a RBX: ffff8101080e9840 RCX: ffffffff88657298
2010-11-02 12:42:40 RDX: 0000000000010000 RSI: 0000000000010000 RDI: 0000000000000000
2010-11-02 12:42:40 RBP: 0000000000006f10 R08: ffffffff8864e220 R09: 00000000000005b0
2010-11-02 12:42:40 R10: ffff8101122b9900 R11: 0000000000000000 R12: 00000000ffffff9d
2010-11-02 12:42:40 R13: ffff81010f451ee0 R14: ffffffff88657428 R15: 0000000000010000
2010-11-02 12:42:40 FS: 00002ac83f14e230(0000) GS:ffff81011fc819c0(0000) knlGS:00000000f7f1b6c0
2010-11-02 12:42:40 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
2010-11-02 12:42:40 CR2: 0000003168952990 CR3: 0000000105cd8000 CR4: 00000000000006e0
2010-11-02 12:42:40 Process ldlm_bl_08 (pid: 27192, threadinfo ffff81010f450000, task
ffff810111ca7100)
2010-11-02 12:42:40 Stack: ffffffff00000000 ffffffff88661d78 ffffffff88661d87 0000000200000407
2010-11-02 12:42:40 ffff8101122b9900 45bcf320a97fb383 0000006000000005 ffffffff00000001
2010-11-02 12:42:40 0000000000000000 ffffffff88661d78 ffffffff88661d81 5a5a5a5a5a5a5a5a
2010-11-02 12:42:40 Call Trace:
2010-11-02 12:42:40 [<ffffffff80062ff8>] thread_return+0x62/0xfe
2010-11-02 12:42:40 [<ffffffff885e46b0>] :ptlrpc:ldlm_handle_bl_callback+0x90/0x260
2010-11-02 12:42:40 [<ffffffff8003bc4c>] remove_wait_queue+0x1c/0x2c
2010-11-02 12:42:40 [<ffffffff885eaf54>] :ptlrpc:ldlm_bl_thread_main+0x284/0x410
2010-11-02 12:42:40 [<ffffffff8008cfbc>] default_wake_function+0x0/0xe
2010-11-02 12:42:40 [<ffffffff800b7aa5>] audit_syscall_exit+0x336/0x362
2010-11-02 12:42:40 [<ffffffff8005dfb1>] child_rip+0xa/0x11
2010-11-02 12:42:40 [<ffffffff885eacd0>] :ptlrpc:ldlm_bl_thread_main+0x0/0x410
2010-11-02 12:42:40 [<ffffffff8005dfa7>] child_rip+0x0/0x11

We don't have any available debug data for this ourselves.

Issue Links

• Trackbacks: Lustre 1.8.x known issues tracker While testing against Lustre b18 branch, we would hit known bugs which were already reported in Lustre Bugzilla https://bugzilla.lustre.org/. In order to move away from relying on Bugzilla, we would create a JIRA