[LU-11442] recovery-small test_57: RIP: lprocfs_stats_collect+0xc1/0x140 [obdclass]

Fri, 28 Sep 2018 06:14:47 +0000

This issue was created by maloo for jianyu <yujian@whamcloud.com>

This issue relates to the following test suite run: https://testing.whamcloud.com/test_sets/ca545da0-c2a9-11e8-b143-52540065bddc

test_57 failed with the following error on client:

[16656.396331] Lustre: DEBUG MARKER: == recovery-small test 57: read procfs entries causes kernel crash =================================== 22:21:05 (1538086865)
[16657.416912] Lustre: DEBUG MARKER: grep -c /mnt/lustre' ' /proc/mounts
[16657.428671] Lustre: DEBUG MARKER: lsof -t /mnt/lustre
[16657.563397] Lustre: DEBUG MARKER: umount /mnt/lustre 2>&1
[16657.623173] BUG: unable to handle kernel NULL pointer dereference at 0000000000000d71
[16657.624140] IP: [<ffffffffc09a8681>] lprocfs_stats_collect+0xc1/0x140 [obdclass]
[16657.625033] PGD 8000000064b6a067 PUD 5b365067 PMD 0 
[16657.625638] Oops: 0000 [#1] SMP 
[16657.626058] Modules linked in: lustre(OE) obdecho(OE) mgc(OE) lov(OE) mdc(OE) osc(OE) lmv(OE) fid(OE) fld(OE) ptlrpc_gss(OE) ptlrpc(OE) obdclass(OE) ksocklnd(OE) lnet(OE) libcfs(OE) brd loop rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache rpcrdma ib_isert iscsi_target_mod ib_iser libiscsi scsi_transport_iscsi ib_srpt target_core_mod crc_t10dif crct10dif_generic ib_srp scsi_transport_srp scsi_tgt ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_core sunrpc iosf_mbi crc32_pclmul ghash_clmulni_intel ppdev aesni_intel lrw gf128mul glue_helper ablk_helper cryptd joydev pcspkr virtio_balloon parport_pc parport i2c_piix4 i2c_core ip_tables ext4 mbcache jbd2 ata_generic pata_acpi virtio_blk ata_piix libata crct10dif_pclmul crct10dif_common crc32c_intel 8139too serio_raw
[16657.634854]  virtio_pci 8139cp virtio_ring virtio mii floppy [last unloaded: libcfs]
[16657.635649] CPU: 1 PID: 26511 Comm: lctl Kdump: loaded Tainted: G           OE  ------------   3.10.0-862.9.1.el7.x86_64 #1
[16657.636755] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[16657.637342] task: ffff99b8a808af70 ti: ffff99b893c60000 task.ti: ffff99b893c60000
[16657.638095] RIP: 0010:[<ffffffffc09a8681>]  [<ffffffffc09a8681>] lprocfs_stats_collect+0xc1/0x140 [obdclass]
[16657.639114] RSP: 0018:ffff99b893c63dc8  EFLAGS: 00010246
[16657.639644] RAX: 0000000000008159 RBX: ffff99b893c63e10 RCX: 000000000000000a
[16657.640359] RDX: 0000000000000d71 RSI: 0000000000001021 RDI: 000000000000000a
[16657.641074] RBP: ffff99b893c63df0 R08: 0000000000000d70 R09: 00000000000002b0
[16657.641782] R10: 0000000000000000 R11: ffff99b893c63c96 R12: ffff99b88159ee00
[16657.642496] R13: 0000000000000056 R14: ffff99b8ba925000 R15: ffff99b893c189c0
[16657.643215] FS:  00007f0110e4c740(0000) GS:ffff99b8bfd00000(0000) knlGS:0000000000000000
[16657.644024] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[16657.644597] CR2: 0000000000000d71 CR3: 000000003dba4000 CR4: 00000000000606e0
[16657.645316] Call Trace:
[16657.645597]  [<ffffffffc09a8f47>] lprocfs_stats_seq_show+0x47/0x140 [obdclass]
[16657.646371]  [<ffffffffb6441cec>] seq_read+0x27c/0x3f0
[16657.646900]  [<ffffffffb641b2ff>] vfs_read+0x9f/0x170
[16657.647416]  [<ffffffffb641c1cf>] SyS_read+0x7f/0xf0
[16657.647942]  [<ffffffffb69206e1>] ? system_call_after_swapgs+0xae/0x146
[16657.648603]  [<ffffffffb6920795>] system_call_fastpath+0x1c/0x21
[16657.649213]  [<ffffffffb69206e1>] ? system_call_after_swapgs+0xae/0x146
[16657.649870] Code: c1 e0 03 0f 1f 80 00 00 00 00 48 63 d1 49 83 7c d4 18 00 74 48 4c 89 c2 49 03 54 fc 18 41 f6 44 24 04 02 4a 8d 34 0a 48 0f 45 d6 <48> 8b 32 48 01 33 48 8b 72 20 48 01 73 20 48 8b 72 08 48 3b 73 
[16657.653050] RIP  [<ffffffffc09a8681>] lprocfs_stats_collect+0xc1/0x140 [obdclass]
[16657.653830]  RSP <ffff99b893c63dc8>
[16657.654192] CR2: 0000000000000d71

VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV
recovery-small test_57 - onyx-39vm1 crashed during recovery-small test_57

Whamcloud Community JIRA

[LU-11442] recovery-small test_57: RIP: lprocfs_stats_collect+0xc1/0x140 [obdclass]