[LU-4511] proc_dir_entry 'lustre/osc' already registered

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.6.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Dmitry Eremin (Inactive)

Description

Lustre: server umount lustre-MDT0000 complete
Lustre: DEBUG MARKER: lsmod | grep lnet > /dev/null && lctl dl | grep ' ST '
Lustre: DEBUG MARKER: e2fsck -fnvd /dev/lvm-Role_MDS/P1
Lustre: DEBUG MARKER: mkdir -p /mnt/mds1
Lustre: DEBUG MARKER: test -b /dev/lvm-Role_MDS/P1
Lustre: DEBUG MARKER: mkdir -p /mnt/mds1; mount -t lustre -o user_xattr,acl /dev/lvm-Role_MDS/P1 /mnt/mds1
LDISKFS-fs (dm-0): mounted filesystem with ordered data mode. quota=on. Opts:
-----------[ cut here ]-----------
WARNING: at fs/proc/generic.c:590 proc_register+0x129/0x220() (Tainted: G W --------------- )
Hardware name: KVM
proc_dir_entry 'lustre/osc' already registered
Modules linked in: osp(U) mdd(U) lfsck(U) lod(U) mdt(U) mgs(U) mgc(U) nodemap(U) osd_ldiskfs(U) lquota(U) lustre(U) lov(U) mdc(U) fid(U) fld(U) ksocklnd(U) ptlrpc(U) obdclass(U) lnet(U) sha512_generic sha256_generic libcfs(U) ldiskfs(U) jbd2 nfsd exportfs autofs4 nfs lockd fscache auth_rpcgss nfs_acl sunrpc ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 ib_sa ib_mad ib_core microcode 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]
Pid: 10542, comm: llog_process_th Tainted: G W --------------- 2.6.32-358.23.2.el6_lustre.ge80a1ca.x86_64 #1
Call Trace:
[<ffffffff8106e3e7>] ? warn_slowpath_common+0x87/0xc0
[<ffffffff8106e4d6>] ? warn_slowpath_fmt+0x46/0x50
[<ffffffff811f0299>] ? proc_register+0x129/0x220
[<ffffffff811f05c2>] ? proc_mkdir_mode+0x42/0x60
[<ffffffff811f05f6>] ? proc_mkdir+0x16/0x20
[<ffffffffa05b8c00>] ? lprocfs_seq_register+0x20/0x80 [obdclass]
[<ffffffffa05aa203>] ? class_search_type+0x53/0xa0 [obdclass]
[<ffffffffa0f7df0a>] ? osp_lprocfs_init+0x30a/0x530 [osp]
[<ffffffffa0f6ac3a>] ? osp_device_alloc+0xfaa/0x29e0 [osp]
[<ffffffffa05e6263>] ? lu_context_init+0xa3/0x240 [obdclass]
[<ffffffffa05cce2f>] ? obd_setup+0x1bf/0x290 [obdclass]
[<ffffffffa05cd108>] ? class_setup+0x208/0x870 [obdclass]
[<ffffffffa05d567c>] ? class_process_config+0xc6c/0x1ad0 [obdclass]
[<ffffffffa05ce263>] ? lustre_cfg_new+0x2d3/0x6e0 [obdclass]
[<ffffffffa05d75fb>] ? class_config_llog_handler+0xa2b/0x1880 [obdclass]
[<ffffffff8150faee>] ? mutex_lock+0x1e/0x50
[<ffffffffa0593d5b>] ? llog_process_thread+0x8ab/0xd60 [obdclass]
[<ffffffffa05e1e4f>] ? keys_fill+0x6f/0x190 [obdclass]
[<ffffffffa0594255>] ? llog_process_thread_daemonize+0x45/0x70 [obdclass]
[<ffffffffa0594210>] ? llog_process_thread_daemonize+0x0/0x70 [obdclass]
[<ffffffff81096a36>] ? kthread+0x96/0xa0
[<ffffffff8100c0ca>] ? child_rip+0xa/0x20
[<ffffffff810969a0>] ? kthread+0x0/0xa0
[<ffffffff8100c0c0>] ? child_rip+0x0/0x20
--[ end trace 47c2f46596bdc381 ]--
-----------[ cut here ]-----------
WARNING: at fs/proc/generic.c:590 proc_register+0x129/0x220() (Tainted: G W --------------- )
Hardware name: KVM
proc_dir_entry 'lustre/osc' already registered
Modules linked in: osp(U) mdd(U) lfsck(U) lod(U) mdt(U) mgs(U) mgc(U) nodemap(U) osd_ldiskfs(U) lquota(U) lustre(U) lov(U) mdc(U) fid(U) fld(U) ksocklnd(U) ptlrpc(U) obdclass(U) lnet(U) sha512_generic sha256_generic libcfs(U) ldiskfs(U) jbd2 nfsd exportfs autofs4 nfs lockd fscache auth_rpcgss nfs_acl sunrpc ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_addr ipv6 ib_sa ib_mad ib_core microcode 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]
Pid: 10542, comm: llog_process_th Tainted: G W --------------- 2.6.32-358.23.2.el6_lustre.ge80a1ca.x86_64 #1
Call Trace:
[<ffffffff8106e3e7>] ? warn_slowpath_common+0x87/0xc0
[<ffffffff8106e4d6>] ? warn_slowpath_fmt+0x46/0x50
[<ffffffff811f0299>] ? proc_register+0x129/0x220
[<ffffffff811f05c2>] ? proc_mkdir_mode+0x42/0x60
[<ffffffff811f05f6>] ? proc_mkdir+0x16/0x20
[<ffffffffa05b8c00>] ? lprocfs_seq_register+0x20/0x80 [obdclass]
[<ffffffffa05aa203>] ? class_search_type+0x53/0xa0 [obdclass]
[<ffffffffa0f7df0a>] ? osp_lprocfs_init+0x30a/0x530 [osp]
[<ffffffffa0f6ac3a>] ? osp_device_alloc+0xfaa/0x29e0 [osp]
[<ffffffffa05e6263>] ? lu_context_init+0xa3/0x240 [obdclass]
[<ffffffffa05cce2f>] ? obd_setup+0x1bf/0x290 [obdclass]
[<ffffffffa05cd108>] ? class_setup+0x208/0x870 [obdclass]
[<ffffffffa05d567c>] ? class_process_config+0xc6c/0x1ad0 [obdclass]
[<ffffffffa05ce263>] ? lustre_cfg_new+0x2d3/0x6e0 [obdclass]
[<ffffffffa05d75fb>] ? class_config_llog_handler+0xa2b/0x1880 [obdclass]
[<ffffffff8150faee>] ? mutex_lock+0x1e/0x50
[<ffffffffa0593d5b>] ? llog_process_thread+0x8ab/0xd60 [obdclass]
[<ffffffffa05e1e4f>] ? keys_fill+0x6f/0x190 [obdclass]
[<ffffffffa0594255>] ? llog_process_thread_daemonize+0x45/0x70 [obdclass]
[<ffffffffa0594210>] ? llog_process_thread_daemonize+0x0/0x70 [obdclass]
[<ffffffff81096a36>] ? kthread+0x96/0xa0
[<ffffffff8100c0ca>] ? child_rip+0xa/0x20
[<ffffffff810969a0>] ? kthread+0x0/0xa0
[<ffffffff8100c0c0>] ? child_rip+0x0/0x20
--[ end trace 47c2f46596bdc382 ]--
-----------[ cut here ]-----------
WARNING: at fs/proc/generic.c:590 proc_register+0x129/0x220() (Tainted: G W --------------- )
Hardware name: KVM
proc_dir_entry 'lustre/osc' already registered

https://maloo.whamcloud.com/test_logs/f6f5d3f2-81d1-11e3-81b2-52540035b04c

Issue Links

• is duplicated by: LU-4532 Test failure on test suite sanity, subtest test_17n (remove_proc_entry: removing non-empty directory 'lustre/osc', leaking at least 'lustre-OST0007-osc-MDT0003')
• is related to: LU-4515 Test failure sanity-quota test_34: Used space for user 60000 is 0, expected 2048
• is related to: LU-3319 Adapt to 3.10 upstream kernel proc_dir_entry change