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(ffffffff827a0ed8) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8281e021,ffffffff827a6f33,2bb,ffffffff8279ec7d) at __assert+0x29 sys/kern/subr_prf.c:157
splraise(8120661b) at splraise+0xb4 sys/arch/amd64/amd64/intr.c:699
mtx_enter_try(fffffd806f19a288) at mtx_enter_try+0x73 sys/kern/kern_lock.c:291
mtx_enter(fffffd806f19a288) at mtx_enter+0x4f sys/kern/kern_lock.c:266
knote_remove(ffff80002120ed58,fffffd806f19a288,fffffd806f19a310,6,0) at knote_remove+0x20d sys/kern/kern_event.c:1881
knote_fdclose(ffff80002120ed58,6) at knote_fdclose+0xae sys/kern/kern_event.c:1934
fdfree(ffff80002120ed58) at fdfree+0xdf sys/kern/kern_descrip.c:1196
exit1(ffff80002120ed58,0,0,1) at exit1+0x3e4 sys/kern/kern_exit.c:206
sys_exit(ffff80002120ed58,ffff80002e4073a0,ffff80002e4073f0) at sys_exit+0x1a sys/kern/kern_exit.c:89
syscall(ffff80002e407470) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff80002e407470) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76bdfc8347c0, count: 245
End of stack trace.