panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/intr.c", line 699
Starting stack trace...
panic(ffffffff827a27e0) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff828205b7,ffffffff827a9140,2bb,ffffffff827a0860) at __assert+0x29 sys/kern/subr_prf.c:157
splraise(ae38fb55) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699
mtx_enter_try(fffffd807002dd80) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291
mtx_enter(fffffd807002dd80) at mtx_enter+0x4f sys/kern/kern_lock.c:266
knote_remove(ffff80002121a018,fffffd807002dd80,fffffd807002de08,3,0) at knote_remove+0x20d sys/kern/kern_event.c:1881
knote_fdclose(ffff80002121a018,3) at knote_fdclose+0xae sys/kern/kern_event.c:1934
fdfree(ffff80002121a018) at fdfree+0xdf sys/kern/kern_descrip.c:1196
exit1(ffff80002121a018,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206
sys_exit(ffff80002121a018,ffff800026135a20,ffff800026135a70) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff800026135af0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026135af0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ee3cab99020, count: 245
End of stack trace.