[LU-7485] replay-single_14 test failed: [ 160.705266] general protection fault: 0000 [#1] RIP: 0010:[<ffffffffa08628e8>] [<ffffffffa08628e8>] tgt_client_free+0x1c8/0x4e0 [ptlrpc]

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.8.0
• Type: Bug
• Priority: Minor
• Reporter: parinay v kondekar (Inactive)
• Assignee: WC Triage
• Resolution: Duplicate

Environment

Configuration : 4 node 1 MDS/1 OSS/2 Clients
Release
3.10.0_229.20.1.el7.x86_64_ga7eface
2.6.32_431.17.1.el6.x86_64

Server 2.7.63
Client 2.5.1

• Severity: 3

Description

stdout.log
                      0       -       0       -       -       -       -       -
lustre-OST0001_UUID
Total allocated inode limit: 0, total allocated block limit: 0

== replay-single test 14: open(O_CREAT), unlink |X| close == 13:32:14 (1448458334)
multiop /mnt/lustre/f14.replay-single vO_tSc
TMPPIPE=/tmp/multiop_open_wait_pipe.8455
Filesystem          1K-blocks  Used Available Use% Mounted on
fre1133@tcp:/lustre   1345184 35144   1209424   3% /mnt/lustre
Failing mds1 on fre1133
Stopping /mnt/mds1 (opts:) on fre1133
reboot facets: mds1
Failover mds1 to fre1133
13:32:31 (1448458351) waiting for fre1133 network 900 secs ...
13:32:31 (1448458351) network interface is UP
mount facets: mds1
Starting mds1: -o rw,user_xattr  /dev/vdb /mnt/mds1

console.log


[  160.705266] general protection fault: 0000 [#1] SMP 

[  160.706212] Modules linked in: osp(OF) mdd(OF) lod(OF) mdt(OF) lfsck(OF) mgs(OF) mgc(OF) osd_ldiskfs(OF) lquota(OF) fid(OF) fld(OF) ksocklnd(OF) ptlrpc(OF) obdclass(OF) lnet(OF) sha512_generic libcfs(OF) ldiskfs(OF) rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache ppdev virtio_balloon virtio_net serio_raw pcspkr parport_pc parport i2c_piix4 nfsd auth_rpcgss nfs_acl lockd sunrpc ext4 mbcache jbd2 ata_generic pata_acpi virtio_blk cirrus syscopyarea sysfillrect sysimgblt drm_kms_helper ttm ata_piix drm virtio_pci virtio_ring i2c_core virtio libata floppy

[  160.706212] CPU: 0 PID: 1542 Comm: obd_zombid Tainted: GF          O--------------   3.10.0-229.20.1.el7_lustremaster_master__77.x86_64 #1

[  160.706212] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007

[  160.706212] task: ffff8800db1271c0 ti: ffff8800d412c000 task.ti: ffff8800d412c000

[  160.706212] RIP: 0010:[<ffffffffa08628e8>]  [<ffffffffa08628e8>] tgt_client_free+0x1c8/0x4e0 [ptlrpc]

[  160.706212] RSP: 0018:ffff8800d412fdd0  EFLAGS: 00010206

[  160.706212] RAX: 5a5a5a5a5a5a5a5a RBX: ffff8800c5f73f00 RCX: 0000000180200009

[  160.706212] RDX: 0000000000000000 RSI: ffffea0003183e40 RDI: 0000000040000000

[  160.706212] RBP: ffff8800d412fdf8 R08: ffff8800c60f9780 R09: 0000000180200009

[  160.706212] R10: ffffea0003183e40 R11: ffffffffa08629b8 R12: ffff8800c5f73c00

[  160.706212] R13: ffff8801190580b0 R14: ffff8800c5f73ea8 R15: ffff8800c5f73f00

[  160.706212] FS:  0000000000000000(0000) GS:ffff88011fc00000(0000) knlGS:0000000000000000

[  160.706212] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b

[  160.706212] CR2: 00007fbc798cb000 CR3: 00000000c9fbd000 CR4: 00000000000006f0

[  160.706212] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

[  160.706212] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400

[  160.706212] Stack:

[  160.706212]  ffff8800c5f73c00 ffff8800c5f73c80 00001ffffffffffe 0000370000000000

[  160.706212]  0000000000000000 ffff8800d412fe10 ffffffffa0bc261d ffff8800c01f4bc8

[  160.706212]  ffff8800d412fe50 ffffffffa058446a ffff8800c5f73c00 ffff8800db1271c0

[  160.706212] Call Trace:

[  160.706212]  [<ffffffffa0bc261d>] mdt_destroy_export+0x6d/0x1e0 [mdt]

[  160.706212]  [<ffffffffa058446a>] obd_zombie_impexp_cull+0x5ba/0xa80 [obdclass]

[  160.706212]  [<ffffffffa058499d>] obd_zombie_impexp_thread+0x6d/0x1c0 [obdclass]

[  160.706212]  [<ffffffff810a9510>] ? wake_up_state+0x20/0x20

[  160.706212]  [<ffffffffa0584930>] ? obd_zombie_impexp_cull+0xa80/0xa80 [obdclass]

[  160.706212]  [<ffffffff8109727f>] kthread+0xcf/0xe0

[  160.706212]  [<ffffffff810971b0>] ? kthread_create_on_node+0x140/0x140

[  160.706212]  [<ffffffff81614598>] ret_from_fork+0x58/0x90

[  160.706212]  [<ffffffff810971b0>] ? kthread_create_on_node+0x140/0x140

[  160.706212] Code: 00 00 49 c7 84 24 d0 02 00 00 00 00 00 00 85 d2 78 4b 4d 85 ed 0f 84 d2 01 00 00 49 8b 85 18 03 00 00 48 85 c0 0f 84 c2 01 00 00 <f0> 0f b3 10 19 d2 85 d2 0f 84 7d 02 00 00 41 f6 84 24 6f 01 00 

[  160.706212] RIP  [<ffffffffa08628e8>] tgt_client_free+0x1c8/0x4e0 [ptlrpc]

[  160.706212]  RSP <ffff8800d412fdd0>

[  160.821948] ---[ end trace 2f78023bbc8ae54b ]---

[  160.826503] Kernel panic - not syncing: Fatal exception

[  160.827494] drm_kms_helper: panic occurred, switching back to text console

Comments

[parinay v kondekar (Inactive)]

• Earlier similar or dup issues - LU-5377 duped to LU-4688 , which is marked as resolved/fixed and landed as,

Author:     Mikhail Pershin <[e-mail]>
AuthorDate: Tue Feb 10 08:49:24 2015 +0300
Commit:     Oleg Drokin <[e-mail]>
CommitDate: Fri Mar 27 15:26:46 2015 +0000

    LU-4688 mdt: remove export_put() from mdt_export_evict()
    
    This export reference dropping is not needed here, export
    referenced from ptlrpc level and will be dropped there as
    well. It looks like that call to the class_export_put()
    was added just similar to other places where the
    class_fail_export() is called but in those cases export
    reference was taken right in the same function while here
    it is taken by external caller and will dropped there.