[LU-18875] qmt_id_lock_glimpse()) ASSERTION( lqe->lqe_gl ) failed

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Severity: 3
• Assignee: Sergey Cheremencev
• Reporter: Sergey Cheremencev

Description

All fields of an lqe, especially flags, must be changed only under a lock protection. Otherwise it might cause the following panic:

 [3113899.284018] LustreError: 18553:0:(qmt_lock.c:973:qmt_id_lock_glimpse()) ASSERTION( lqe->lqe_gl ) failed: 
[3113899.286303] LustreError: 18553:0:(qmt_lock.c:973:qmt_id_lock_glimpse()) LBUG
[3113899.287903] CPU: 8 PID: 18553 Comm: qmt_reba_testfs Kdump: loaded Tainted: G           OE     -------- -  - 4.18.0-553.27.1.el8_lustre.ddn17.x86_64 #1
[3113899.293031] Call Trace:
[3113899.293736]  dump_stack+0x41/0x60
[3113899.294569]  lbug_with_loc.cold.8+0x5/0x58 [libcfs]
[3113899.295635]  qmt_reba_thread+0x9ae/0x9d0 [lquota]
[3113899.297904]  kthread+0x134/0x150
[3113899.299628]  ret_from_fork+0x1f/0x40