PowerFlex: NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [lia-<version>]

Summary: The server hangs with a stack trace referring to soft lockup on lia process.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

The following stack trace may be observed in the messages or journalctl logs. 

kernel: NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [lia-3.5.0.468:374992]
kernel: CPU: 2 PID: 374992 Comm: lia-3.5.0.468 Kdump: loaded Not tainted 3.10.0-862.el7.x86_64 #1
kernel: Hardware name: Dell Inc. PowerEdge R740xd/XXXXX, BIOS 2.6.4 04/09/2020
kernel: task: ffff89805bfbeeb0 ti: ffff89803fa74000 task.ti: ffff89803fa74000
kernel: RIP: 0010:[<ffffffffaf8617bf>]  [<ffffffffaf8617bf>] fsnotify+0x19f/0x510
kernel: RSP: 0018:ffff89803fa77dc0  EFLAGS: 00000246
kernel: RAX: ffff8988557a1301 RBX: ffff89803fa77e10 RCX: 0000000000000000
kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
kernel: RBP: ffff89803fa77e90 R08: 0000000000000000 R09: 0000000000000000
kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8980595692f0
kernel: R13: ffff89805a607400 R14: ffff890000000026 R15: ffff89805a607400
kernel: FS:  00007fcb6c130700(0000) GS:ffff89805ca40000(0000) knlGS:0000000000000000
kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: CR2: 00007fcb6c12bff0 CR3: 0000000ff4fb6000 CR4: 00000000007607e0
kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kernel: PKRU: 55555554
kernel: Call Trace:
kernel: [<ffffffffaf8769f3>] ? vfs_lock_file+0x53/0x60
kernel: [<ffffffffaf81cf41>] __fput+0xa1/0x260
kernel: [<ffffffffaf81d1ee>] ____fput+0xe/0x10
kernel: [<ffffffffaf6b784b>] task_work_run+0xbb/0xe0
kernel: [<ffffffffaf62ac55>] do_notify_resume+0xa5/0xc0
kernel: [<ffffffffafd1fb1d>] int_signal+0x12/0x17
 

Cause

The multiple soft lockups in due to fsnotify() function call which is the Operating System function.

Resolution

This is not a Powerflex but an Operating System kernel bug.
Please contact the OS vendor to further investigate the issue with fsnotify() function call.

Additional Information

The customer could refer to the following article where one of the few known bugs with fsnotify() is discussed.
https://bugs.centos.org/view.php?id=14823
https://access.redhat.com/solutions/3441101

Affected Products

ScaleIO, PowerFlex Software

Products

PowerFlex rack, VxFlex Product Family, VxFlex Ready Node
Article Properties
Article Number: 000203926
Article Type: Solution
Last Modified: 17 Nov 2025
Version:  2
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