syzbot

panic: uvm_fault_unwire_locked: address not in map
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 174787  41761      0           0          0    0  syz-executor
* 11910  41761      0           0  0x4000000    1K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8349cd15) at panic+0x1e5 sys/kern/subr_prf.c:198
uvm_fault_unwire_locked(fffffd806c8d23e8,200000580000,200000588000) at uvm_fault_unwire_locked+0x4be
uvm_fault_wire(fffffd806c8d23e8,200000580000,200000591000,1) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1724 [inline]
uvm_fault_wire(fffffd806c8d23e8,200000580000,200000591000,1) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1706
uvm_vslock_device(ffff80003abd94e0,2000005804c0,10000,1,ffff80003c41d238) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169
physio(ffffffff82c2d0a0,d02,0,ffffffff82c2d8f0,ffff80003c41d518) at physio+0x257 sys/kern/kern_physio.c:139
spec_write(ffff80003c41d360) at spec_write+0x11f sys/kern/spec_vnops.c:302
VOP_WRITE(fffffd80626a5be8,ffff80003c41d518,5,fffffd80097fd478) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
vn_write(fffffd806c827188,ffff80003c41d518,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408
dofilewritev(ffff80003abd94e0,5,ffff80003c41d518,0,ffff80003c41d5d0) at dofilewritev+0x2bd sys/kern/sys_generic.c:384
sys_write(ffff80003abd94e0,ffff80003c41d680,ffff80003c41d5d0) at sys_write+0xa2 sys/kern/sys_generic.c:300
syscall(ffff80003c41d680) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c41d680) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe7d3ea2bc90, count: 2
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