uvm_fault(0xffffffff838b97a8, 0xffff80003c426308, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      witness_checkorder+0xb5:        movl    0x20(%r14),%r15d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
  98372  42181      0         0x2        0x1    1  syz-executor
witness_checkorder(ffff80003c4262e8,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779
mtx_enter(ffff80003c4262d8) at mtx_enter+0x95 sys/kern/kern_lock.c:406
filt_procdetach(fffffd80693c4c38) at filt_procdetach+0x4d sys/kern/kern_event.c:432
knote_remove(ffff80003a4094e0,fffffd806f82bb60,fffffd806f82bc00,6,1) at knote_remove+0x1fb sys/kern/kern_event.c:-1
kqueue_purge(ffff80003a4094e0,fffffd806f82bb60) at kqueue_purge+0x137 sys/kern/kern_event.c:1890
kqueue_close(fffffd80647d91b8,ffff80003a4094e0) at kqueue_close+0x48 sys/kern/kern_event.c:1934
fdrop(fffffd80647d91b8,ffff80003a4094e0) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd80647d91b8,ffff80003a4094e0) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff80003a4094e0) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff80003a4094e0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003a4094e0,ffff80003c441810,ffff80003c441760) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c441810) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c441810) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76c4fcc3d9a0, count: 2
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