[LU-18780] Running "lfs quota -a -u /lustre" Simultaneously Causes the lfs quota to Hang

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: Hongchao Zhang
• Reporter: Hongchao Zhang

Description

Running 'lfs quota -a -u/-g/-p /lustre' simultaneously causes the commands to hang.
They said that the commands were run simultaneously by cron at 16:00.

kernel: RIP: 0010:quotactl_getallquota+0x52/0x3e0 [lustre]

kernel: Call Trace:
kernel: <IRQ>
kernel: ? quotactl_getallquota+0x52/0x3e0 [lustre]
kernel: ? quotactl_getallquota+0x3f/0x3e0 [lustre]
kernel: quotactl_ioctl+0x882/0xca0 [lustre]
kernel: ? kmem_cache_alloc_trace+0x17e/0x300
kernel: ll_dir_ioctl+0x200/0x5bb0 [lustre]
kernel: ? ima_file_check+0x53/0x80
kernel: ? avc_has_extended_perms+0x1b7/0x420
kernel: ? terminate_walk+0x61/0xf0
kernel: ? path_openat+0xc0/0x2b0 
kernel: ? do_filp_open+0xb2/0x160
kernel: __x64_sys_ioctl+0x87/0xc0
kernel: do_syscall_64+0x59/0x90
kernel: ? syscall_exit_to_user_mode+0x12/0x30
kernel: ? do_syscall_64+0x69/0x90