syzbot

uvm_fault(0xfffff8006fb695c0, 0x6a5d92f1, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      amap_lookups+0x1e0:     movl    0x10(%r15),%r14d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*403539  86386      0           0          0    1  syz-executor
  57455  55802      0     0x14000      0x200    0  reaper
amap_lookups(fffff8006ce41148,13000,ffff80002a27c730,8) at amap_lookups+0x1e0 amap_chunk_get sys/uvm/uvm_amap.c:118 [inline]
amap_lookups(fffff8006ce41148,13000,ffff80002a27c730,8) at amap_lookups+0x1e0 sys/uvm/uvm_amap.c:1168
uvm_fault_check(ffff80002a27c830,ffff80002a27c868,ffff80002a27c8a0,0) at uvm_fault_check+0x8d2 sys/uvm/uvm_fault.c:840
uvm_fault(fffff8006fb695c0,beae6a13000,0,1) at uvm_fault+0x106 sys/uvm/uvm_fault.c:627
upageflttrap(ffff80002a27c9d0,beae6a13ff0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a27c9d0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x75cae3be5cc0, count: 9
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