[LU-7921] replay-single/30: ZFS NULL pointer dmu_objset_disown called from osd_mount

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Fix Version/s: Lustre 2.9.0
• Affects Version/s: Lustre 2.7.0
• Labels: zfs
• Severity: 3
• Assignee: WC Triage
• Reporter: Maloo

Description

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

This issue relates to the following test suite run: https://testing.hpdd.intel.com/test_sets/871505d0-f16e-11e5-8165-5254006e85c2.

MDS01 console log:

14:46:35:Lustre: DEBUG MARKER: mkdir -p /mnt/mds1; mount -t lustre   		                   lustre-mdt1/mdt1 /mnt/mds1
14:46:35:BUG: unable to handle kernel NULL pointer dereference at (null)
14:46:35:IP: [<ffffffffa0210249>] dmu_objset_disown+0x9/0x20 [zfs]
14:46:35:PGD 5f808067 PUD 7c459067 PMD 0 
14:46:35:Oops: 0000 [#1] SMP 
14:46:35:last sysfs file: /sys/devices/system/cpu/online
14:46:35:CPU 1 
14:46:35: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 virtio_balloon 8139too 8139cp mii i2c_piix4 i2c_core ext3 jbd mbcache virtio_blk pata_acpi ata_generic ata_piix virtio_pci virtio_ring virtio dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib]
14:46:35:
14:46:35:Pid: 9714, comm: mount.lustre Tainted: P           -- ------------    2.6.32-573.18.1.el6_lustre.ge379ff0.x86_64 #1 Red Hat KVM
14:46:35:RIP: 0010:[<ffffffffa0210249>]  [<ffffffffa0210249>] dmu_objset_disown+0x9/0x20 [zfs]
14:46:35:RSP: 0018:ffff88007c2c3898  EFLAGS: 00010246
14:46:35:RAX: 0000000000000000 RBX: ffff88007b294ac0 RCX: ffff88007a576c58
14:46:35:RDX: 0000000000000000 RSI: ffff88005fa0a000 RDI: 0000000000000000
14:46:35:RBP: ffff88007c2c3898 R08: dead000000200200 R09: dead000000100100
14:46:35:R10: dead000000200200 R11: 0000000000000000 R12: ffff88005fa0a000
14:46:35:R13: 00000000fffffff0 R14: ffff88005fa0a189 R15: ffff88007c2c3958
14:46:35:FS:  00007f9cfb3717a0(0000) GS:ffff880002300000(0000) knlGS:0000000000000000
14:46:35:CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
14:46:35:CR2: 0000000000000000 CR3: 000000007a598000 CR4: 00000000000006e0
14:46:35:DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
14:46:35:DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
14:46:35:Process mount.lustre (pid: 9714, threadinfo ffff88007c2c0000, task ffff88005c608ab0)
14:46:35:Stack:
14:46:35: ffff88007c2c3908 ffffffffa0f4edad ffff88007c2c3fd8 ffff88005fa0a109
14:46:35:<d> ffff88007c2c3908 ffff88006104c000 0000000000000005 0000000000000000
14:46:35:<d> ffff88007b294ac0 ffff88005fa0a000 ffff88007c2c3958 0000000000000000
14:46:35:Call Trace:
14:46:35: [<ffffffffa0f4edad>] osd_mount+0x41d/0xfb0 [osd_zfs]
14:46:35: [<ffffffffa0f51896>] osd_device_alloc+0x2c6/0x480 [osd_zfs]
14:46:35: [<ffffffffa089a1bf>] obd_setup+0x1bf/0x290 [obdclass]
14:46:35: [<ffffffffa089a498>] class_setup+0x208/0x870 [obdclass]
14:46:35: [<ffffffffa08a355c>] class_process_config+0xc6c/0x1ad0 [obdclass]
14:46:35: [<ffffffff81178c5c>] ? __kmalloc+0x21c/0x230
14:46:35: [<ffffffffa08aa8bd>] do_lcfg+0x61d/0x750 [obdclass]
14:46:35: [<ffffffffa08aaa84>] lustre_start_simple+0x94/0x200 [obdclass]
14:46:35: [<ffffffffa08e48e1>] server_fill_super+0xfd1/0x1a6a [obdclass]
14:46:35: [<ffffffffa08af094>] lustre_fill_super+0xb64/0x2120 [obdclass]
14:46:35: [<ffffffffa08ae530>] ? lustre_fill_super+0x0/0x2120 [obdclass]
14:46:35: [<ffffffff8119565f>] get_sb_nodev+0x5f/0xa0
14:46:35: [<ffffffffa08a6115>] lustre_get_sb+0x25/0x30 [obdclass]
14:46:35: [<ffffffff81194c9b>] vfs_kern_mount+0x7b/0x1b0
14:46:35: [<ffffffff81194e42>] do_kern_mount+0x52/0x130
14:46:35: [<ffffffff811a7ba2>] ? vfs_ioctl+0x22/0xa0
14:46:35: [<ffffffff811b6dfb>] do_mount+0x2fb/0x930
14:46:35: [<ffffffff811b74c0>] sys_mount+0x90/0xe0
14:46:35: [<ffffffff8100b0d2>] system_call_fastpath+0x16/0x1b
14:46:35:Code: e8 8d 09 01 00 48 8b bb a8 00 00 00 e8 81 09 01 00 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f c9 c3 66 90 55 48 89 e5 0f 1f 44 00 00 <48> 8b 3f e8 7f 30 01 00 c9 c3 66 66 66 66 2e 0f 1f 84 00 00 00 
14:46:35:RIP  [<ffffffffa0210249>] dmu_objset_disown+0x9/0x20 [zfs]
14:46:35: RSP <ffff88007c2c3898>
14:46:35:CR2: 0000000000000000

The sub-test test_30 failed with the following error:

test failed to respond and timed out

Please provide additional information about the failure here.

Info required for matching: replay-single 30

Issue Links

• duplicates: LU-7893 osd-zfs: calls dmu_objset_disown() with NULL objset_t *