[LU-7498] replay-single test_52: kernel panic during umount MDT (class_decref+0x1ac)

• Type: Bug
• Resolution: Cannot Reproduce
• Priority: Minor
• Affects Version/s: Lustre 2.8.0
• Labels: zfs
• Severity: 3
• Assignee: WC Triage
• Reporter: Maloo

Description

This issue was created by maloo for wangdi <[e-mail]>

This issue relates to the following test suite run: https://testing.hpdd.intel.com/test_sets/c55f2bf8-93a0-11e5-a7f9-5254006e85c2.

The sub-test test_52 failed with the following error:

04:31:21:Lustre: DEBUG MARKER: umount -d /mnt/mds1
04:31:21:Lustre: lustre-MDT0000: Not available for connect from 10.2.4.105@tcp (stopping)
04:31:21:general protection fault: 0000 [#1] SMP 
04:31:21:last sysfs file: /sys/devices/system/cpu/online
04:31:21:CPU 1 
04:31:21:Modules linked in: osp(U) mdd(U) lod(U) mdt(U) lfsck(U) mgs(U) mgc(U) osd_zfs(U) lquota(U) lustre(U) lov(U) mdc(U) fid(U) lmv(U) fld(U) ksocklnd(U) ptlrpc(U) obdclass(U) lnet(U) sha512_generic libcfs(U) nfs fscache nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs autofs4 ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 zfs(P)(U) zcommon(P)(U) znvpair(P)(U) spl(U) zlib_deflate zavl(P)(U) zunicode(P)(U) microcode serio_raw virtio_balloon 8139too 8139cp mii i2c_piix4 i2c_core ext3 jbd mbcache virtio_blk virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib]
04:31:21:
04:31:21:Pid: 12390, comm: obd_zombid Tainted: P           -- ------------    2.6.32-573.7.1.el6_lustre.g4bba2cb.x86_64 #1 Red Hat KVM
04:31:21:RIP: 0010:[<ffffffffa0892abc>]  [<ffffffffa0892abc>] class_decref+0x1ac/0x4c0 [obdclass]
04:31:21:RSP: 0018:ffff880037147dc0  EFLAGS: 00010206
04:31:21:RAX: 5a5a5a5a5a5a5a5a RBX: ffff880077a05038 RCX: 0000000000000000
04:31:21:RDX: 0000000000000034 RSI: 0000000000000000 RDI: 0000000000000286
04:31:21:RBP: ffff880037147e20 R08: 0000000000000002 R09: 5a5a5a5a5a5a5a5a
04:31:21:R10: 5a5a5a5a5a5a5a5a R11: 0000000000000000 R12: ffff88007b972000
04:31:21:R13: ffffffffa111c000 R14: ffff880037147dc0 R15: ffff880077c6eab0
04:31:21:FS:  0000000000000000(0000) GS:ffff880002300000(0000) knlGS:0000000000000000
04:31:21:CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
04:31:21:CR2: 00007fa790ac5000 CR3: 0000000060e49000 CR4: 00000000000006e0
04:31:21:DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
04:31:21:DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
04:31:21:Process obd_zombid (pid: 12390, threadinfo ffff880037144000, task ffff880077c6eab0)
04:31:21:Stack:
04:31:21: 0000000410000001 0000000000000000 0000000000000000 ffff880037147dd8
04:31:21:<d> ffff880037147dd8 0000000000000264 0000000000000000 0000370000000000
04:31:21:<d> 0000000000000000 0000370000000000 ffff88006181f000 ffff880077a05038
04:31:21:Call Trace:
04:31:21: [<ffffffffa087dcfc>] obd_zombie_impexp_cull+0x61c/0xac0 [obdclass]
04:31:21: [<ffffffffa087e205>] obd_zombie_impexp_thread+0x65/0x190 [obdclass]
04:31:21: [<ffffffff810672b0>] ? default_wake_function+0x0/0x20
04:31:21: [<ffffffffa087e1a0>] ? obd_zombie_impexp_thread+0x0/0x190 [obdclass]
04:31:21: [<ffffffff810a0fce>] kthread+0x9e/0xc0
04:31:21: [<ffffffff8100c28a>] child_rip+0xa/0x20
04:31:21: [<ffffffff810a0f30>] ? kthread+0x0/0xc0
04:31:21: [<ffffffff8100c280>] ? child_rip+0x0/0x20
04:31:21:Code: e8 ea 9b f0 ff 48 85 db 0f 84 63 02 00 00 4c 8b 63 10 48 8b 03 4d 85 e4 4c 8b 68 48 0f 85 ad 01 00 00 48 85 c0 0f 84 cc 01 00 00 <48> 8b 40 10 48 83 78 30 00 0f 84 bd 01 00 00 8b b3 90 0e 00 00 
04:31:21:RIP  [<ffffffffa0892abc>] class_decref+0x1ac/0x4c0 [obdclass]
04:31:21: RSP <ffff880037147dc0>

Please provide additional information about the failure here.

Info required for matching: replay-single 52