port-amd64/60556: panic in process_read_fpregs_xmm

["nia%sent.at@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60556
>Category:       port-amd64
>Synopsis:       panic in process_read_fpregs_xmm
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Aug 08 00:00:00 +0000 2026
>Originator:     nia
>Release:        current
>Organization:
The NetBSD Fpregsdation
>Environment:
NetBSD siphon 11.99.7 NetBSD 11.99.7 (SIPHON) #0: Sun Aug  2 22:56:47 CEST 2026  nia@siphon:/encrypt/obj/sys/arch/amd64/compile/SIPHON amd64
>Description:
System panicked: kernel diagnostic assertion "!(l->l_md.md_flags & MDL_FPU_IN_CPU)" failed: file "/encrypt/src/sys/arch/x86/x86/fpu.c", line 173
Backtrace from time of crash is available.
crash> bt
oss_ioctl_sequencer() at 0
kern_reboot() at kern_reboot+0x5f
vpanic() at vpanic+0x193
kern_assert() at __x86_indirect_thunk_rax
process_read_fpregs_xmm() at process_read_fpregs_xmm+0x11f
process_read_fpregs() at process_read_fpregs+0x9
proc_regio() at proc_regio+0x6c
procfs_rw() at procfs_rw+0x67e
VOP_READ() at VOP_READ+0x42
vn_read() at vn_read+0x133
dofileread() at dofileread+0x75
sys_read() at sys_read+0x49
syscall() at syscall+0x9d
--- syscall (number 3) ---
syscall+0x9d:
>How-To-Repeat:
idk it happened while running IntelliJ IDEA
>Fix: