[LU-18981] do not call blocking ops when !TASK_RUNNING; state=402 set at [<0000000008d1b58e>] prepare_to_wait_event+0x90/0x1a0

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Labels: llnlfixready topllnl
• Environment: 2.15.6 ; rhel8.10
• Severity: 3
• Assignee: Zhenyu Xu
• Reporter: Olaf Faaland

Description

Upon lustre client mount, this is reported on the console log:

do not call blocking ops when !TASK_RUNNING; state=402 set at [<0000000008d1b58e>] prepare_to_wait_event+0x90/0x1a0
WARNING: CPU: 2 PID: 2529823 at kernel/sched/core.c:7471 __might_sleep+0x62/0x70
RIP: 0010:__might_sleep+0x62/0x70
Call Trace:
 ? __warn+0x94/0xe0
 ? __might_sleep+0x62/0x70
 ? __might_sleep+0x62/0x70
 ? report_bug+0xb1/0xe0
 ? do_error_trap+0x9e/0xd0
 ? do_invalid_op+0x36/0x40
 ? __might_sleep+0x62/0x70
 ? invalid_op+0x14/0x20
 ? ptlrpc_request_cache_alloc+0x26/0x100 [ptlrpc]
 ? __might_sleep+0x62/0x70
 ? __might_sleep+0x62/0x70
 kmem_cache_alloc+0x248/0x2b0
 ? srso_alias_return_thunk+0x5/0xfcdf2
 ptlrpc_request_cache_alloc+0x26/0x100 [ptlrpc]
 sptlrpc_cli_unwrap_early_reply+0x3a/0xb90 [ptlrpc]
 ptlrpc_check_set_common+0x1564/0x1ed0 [ptlrpc]
 ? srso_alias_return_thunk+0x5/0xfcdf2
 ptlrpc_set_wait+0x6b7/0x930 [ptlrpc]
 ? srso_alias_return_thunk+0x5/0xfcdf2
 ? lustre_get_jobid+0x2ba/0x300 [obdclass]
 ? finish_wait+0x90/0x90
 ptlrpc_queue_wait+0x81/0x230 [ptlrpc]
 ldlm_cli_enqueue+0x5eb/0xa70 [ptlrpc]
 ? ldlm_expired_completion_wait+0x250/0x250 [ptlrpc]
 ? ll_md_need_convert+0x160/0x160 [lustre]
 ? mdc_changelog_cdev_finish+0x210/0x210 [mdc]
 mdc_enqueue_base+0x386/0x1480 [mdc]
 ? mdc_revalidate_lock+0x1a9/0x1d0 [mdc]
 mdc_intent_lock+0x219/0x560 [mdc]
 ? ll_md_need_convert+0x160/0x160 [lustre]
 ? ldlm_expired_completion_wait+0x250/0x250 [ptlrpc]
 ? mdc_changelog_cdev_finish+0x210/0x210 [mdc]
 lmv_intent_lookup+0x262/0x9b0 [lmv]
 ? ll_md_need_convert+0x160/0x160 [lustre]
 ? ll_prep_md_op_data+0x336/0x820 [lustre]
 ? ll_md_need_convert+0x160/0x160 [lustre]
 lmv_intent_lock+0x320/0x390 [lmv]
 ll_inode_revalidate+0x14d/0x700 [lustre]
 ll_getattr_dentry+0x3a5/0x970 [lustre]
 ? srso_alias_return_thunk+0x5/0xfcdf2
 ? security_inode_getattr+0x30/0x50
 vfs_statx+0x8a/0xe0
 __do_sys_newstat+0x39/0x70
 do_syscall_64+0x5b/0x1a0
 entry_SYSCALL_64_after_hwframe+0x66/0xcb