[LU-19168] use of uninitialized spinlock in conf-sanity

• Type: Bug
• Resolution: Fixed
• Priority: Medium
• Fix Version/s: Lustre 2.17.0
• Affects Version/s: Lustre 2.17.0
• Labels: easy
• Severity: 3
• Assignee: Chakshu Kansal
• Reporter: Oleg Drokin

Description

Looks like test 5h and test 26  in conf-sanity that use failloc 0x135 are hitting this warning:

[ 2152.758458] LustreError: MGC192.168.206.124@tcp: Connection to MGS (at 0@lo) was lost; in progress operations using this service will fail
[ 2152.884525] Lustre: *** cfs_fail_loc=135, val=0***
[ 2152.921897] Lustre: lustre-MDT0000: Not available for connect from 192.168.206.24@tcp (not set up)
[ 2152.986314] BUG: spinlock bad magic on CPU#0, llog_process_th/67005
[ 2152.992460]  lock: 0xffff99fe36363cc0, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[ 2153.000238] CPU: 0 PID: 67005 Comm: llog_process_th Kdump: loaded Tainted: G           O      -------- -  - 4.18.0rh8.10-debug #10
[ 2153.010663] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014
[ 2153.016673] Call Trace:
[ 2153.020345]  ? dump_stack+0xbb/0x10e
[ 2153.021793]  ? spin_dump.cold.3+0x32/0x65
[ 2153.028771]  ? do_raw_spin_lock+0xce/0x190
[ 2153.030896]  ? _raw_spin_lock+0x21/0x30
[ 2153.032744]  ? mdd_changelog_fini+0x45/0x3a0 [mdd]
[ 2153.034557]  ? mdd_process_config+0x368/0x930 [mdd]
[ 2153.036601]  ? mdt_stack_fini+0x5de/0xe50 [mdt]
[ 2153.038559]  ? mdt_init0+0x6c0/0x18f0 [mdt]
[ 2153.040050]  ? _raw_spin_unlock+0x12/0x30
[ 2153.042525]  ? mdt_device_alloc+0x118/0x170 [mdt]
[ 2153.047914]  ? obd_setup+0x2e6/0x700 [obdclass]
[ 2153.049672]  ? class_setup+0x6f5/0x9f0 [obdclass]
[ 2153.052082]  ? class_process_config+0x1658/0x2b60 [obdclass]
[ 2153.057151]  ? class_config_llog_handler+0x8ac/0x1af0 [obdclass]
[ 2153.060500]  ? __kmalloc+0x1b4/0x4a0
[ 2153.062561]  ? class_config_llog_handler+0xc51/0x1af0 [obdclass]
[ 2153.065202]  ? llog_process_thread+0x13be/0x2220 [obdclass]
[ 2153.067605]  ? llog_process+0x40/0x40 [obdclass]
[ 2153.069456]  ? llog_process_thread_daemonize+0xa2/0xe0 [obdclass]
[ 2153.072078]  ? kthread+0x1d1/0x200
[ 2153.072959]  ? set_kthread_struct+0x70/0x70
[ 2153.075795]  ? ret_from_fork+0x1f/0x30

 

Issue Links

• is related to: LU-16807 Resolve newer debug kernel warnings