uvm_fault(0xfffffd806bd893e8, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff830d9c38 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a305e70
gsbase 0xffff8000299edff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff830d9c38
Starting stack trace...
panic(ffffffff833cb830) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a305dc0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff80000159c000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtclose(11e5f,81,2000,ffff80003c41aa88) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,81,2000,ffff80003c41aa88) at dtclose+0x109 sys/dev/dt/dt_dev.c:239
spec_close(ffff80002a305f70) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd805dc2b298,81,fffffd80097fb5b0,ffff80003c41aa88) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806499f070,ffff80003c41aa88) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806499f070,ffff80003c41aa88) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806499f070,ffff80003c41aa88) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806499f070,ffff80003c41aa88) at closef+0x192 sys/kern/kern_descrip.c:1264
syscall(ffff80002a3061d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a3061d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x636f53b3f30, count: 245
End of stack trace.
WARNING: SPL NOT LOWERED ON SYSCALL 83 -436080912 EXIT 0 4
Stopped at      savectx+0xae:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*492292   9576      0           0  0x4000000    1  syz-executor
 496263  60596      0         0x2        0x1    0  syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x72135dde5c0, count: 14
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