assert "nlevel >= IPL_NONE" failed in intr.c (4)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 2a2497efc5fa add aggr(4) to some large ramdisks which I've..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=11cd4f1a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=1cc879d122fd7b018b04

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4f5eac543e00/disk-2a2497ef.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/837089380c51/bsd-2a2497ef.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/430f716d8ea6/kernel-2a2497ef.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1cc879...@syzkaller.appspotmail.com

login: panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 803
Starting stack trace...
panic(ffffffff833afa76) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833f024e,ffffffff83437897,323,ffffffff83397dd9) at __assert+0x29 sys/kern/subr_prf.c:-1
splraise(f42330fb) at splraise+0xbd
mtx_enter(fffffd806c7f5a00) at mtx_enter+0xd4 sys/kern/kern_lock.c:407
pmap_page_remove(fffffd80088d0428) at pmap_page_remove+0xca rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline]
pmap_page_remove(fffffd80088d0428) at pmap_page_remove+0xca pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline]
pmap_page_remove(fffffd80088d0428) at pmap_page_remove+0xca sys/arch/amd64/amd64/pmap.c:1974
uvm_anfree(fffffd806cb8e0a8) at uvm_anfree+0xd8 sys/uvm/uvm_anon.c:111
amap_wipeout(fffffd806ec42588) at amap_wipeout+0x246 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a2eac80,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd806ea7b3e0) at uvm_map_teardown+0x360 sys/uvm/uvm_map.c:2525
exit1(ffff8000ffffc008,43,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff8000ffffc008,ffff80002a2eae50,ffff80002a2eada0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a2eae50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2eae50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7583ba556ea0, count: 244
End of stack trace.


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