PowerScale: Isilon: node panics with error "Fatal trap 12: page fault while in kernel mode" OR Assertion failed

Summary: Isilon/PowerScale node panics with the following stack: panic @ time 1636820409.559, thread 0xfffff80b615e8000: Fatal trap 12: page fault while in kernel mode Within the stack you see: kernel:lki_shrink_lazy_queue+0x439 kernel:lin_lock_deltaread_lock_loss_probe+0x120 ...

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Symptoms

Isilon/PowerScale node panics with the following stack:

panic @ time 1636820409.559, thread 0xfffff80b615e8000: Fatal trap 12: page fault while in kernel mode

time = 1636820409
cpuid = 3, TSC = 0x1825289de5b108
Panic occurred in module kernel loaded at 0xffffffff80200000:

Stack: --------------------------------------------------
kernel:trap_fatal+0xa3
kernel:trap_pfault+0x48
kernel:trap+0x314
kernel:curb_cache_free_nondelta+0x43
kernel:bam_update_inode_lock_loss_cb+0x161
kernel:lin_lock_deltaread_lock_loss_probe+0x120
kernel:lki_decide_llcb_type_and_probe+0x26c
kernel:lki_lock_loss_add_waiters+0x4b
kernel:lki_unlock_idds_entry+0x258
kernel:lki_shrink_lazy_queue+0x439
kernel:_lki_unlock_owner+0x413
kernel:lki_unlock_impl+0x56b
kernel:lk_unlock+0xbf
kernel:lin_lock_release_locker+0x28
kernel:ifs_vnop_wrapunlock+0xfe
kernel:VOP_UNLOCK_APV+0x97
kernel:vputx+0x154
kernel:bam_vput+0x20
kernel:putfd+0x17
kernel:_pctl2_start_restripe+0x35a
kernel:_sys_pctl2_start_restripe+0x58a
kernel:amd

OR

panic @ time 1640560360.736, thread 0xfffff805f25cd000: Assertion Failure
time = 1640560360
cpuid = 5, TSC = 0x5afba0fd75a32d
Panic occurred in module kernel loaded at 0xffffffff80200000:

Stack: --------------------------------------------------
kernel:isi_assert_halt+0x2e
kernel:curb_cache_lin_llcb+0x56
kernel:bam_update_inode_lock_loss_cb+0x161
kernel:lin_lock_deltaread_lock_loss_probe+0x120
kernel:lki_decide_llcb_type_and_probe+0x26c
kernel:lki_lock_loss_add_waiters+0x4b
kernel:lki_unlock_idds_entry+0x258
kernel:lki_shrink_lazy_queue+0x439
kernel:_lki_unlock_owner+0x413
kernel:lki_unlock_impl+0x56b
kernel:lk_unlock+0xbf
kernel:lin_lock_release_locker+0x28
kernel:ifs_vnop_wrapunlock+0xfe
kernel:VOP_UNLOCK_APV+0x97
kernel:vputx+0x154
kernel:bam_vput+0x20
kernel:putfd+0x17
kernel:_sys_ifs_sbt_get_entry+0x315
kernel:amd64_syscall+0x9f2

 

Cause

Caused by a known issue PSCALE-62304, resolved in 9.1.0.13 (November patch) and also in 9.2.0.0
(resolved in 9.1.0.13 PATCH: [9.1.0.13_GA-RUP_2021-11][Multiple User space and Kernel Fixes](November 2021)

The unexpected panic reboot is caused by a race condition while releasing a cache from an internal-use cluster statistics inode.
This issue in code has been fixed in the following versions or later:

  • OneFS 9.1.0.13 via PSCALE-62304
  • OneFS 9.2 via PSCALE-49586
  • OneFS 9.3 via PSCALE-50848

 

Resolution

Advise customer to upgrade to one of the releases above.
There are no workarounds available.

 

Affected Products

Enterprise Storage, Isilon, PowerScale Normal Chassis

Products

Software
Article Properties
Article Number: 000194064
Article Type: Solution
Last Modified: 07 Jul 2025
Version:  3
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