uvm_fault(0xfffffd805e283028, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff81afcf38 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a365090
gsbase 0xffff8000299edff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff81afcf38
Starting stack trace...
panic(ffffffff833a205a) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a364fe0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff800001482000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586
dtclose(21e5f,81,2000,ffff80003c44b790) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(21e5f,81,2000,ffff80003c44b790) at dtclose+0x109 sys/dev/dt/dt_dev.c:232
spec_close(ffff80002a365190) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd8064be6cc8,81,fffffd80097fb750,ffff80003c44b790) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd805e68dde0,ffff80003c44b790) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd805e68dde0,ffff80003c44b790) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd805e68dde0,ffff80003c44b790) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd805e68dde0,ffff80003c44b790) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff80003c44b790) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff80003c44b790,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff80003c44b790,ffff80002a365500,ffff80002a365450) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a365500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a365500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77ced8a89320, count: 242
End of stack trace.
WARNING: SPL NOT LOWERED ON SYSCALL 5 -435295552 EXIT 0 4
Stopped at      savectx+0xae:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
  91166  82621      0           0          0    0  syz-executor
*443651  11983      0         0x2          0    1  syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7130e60dea40, count: 14
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