uvm_fault(0xfffffd8073b65738, 0x7f846309e880, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at      pmap_page_remove+0x43d: xchgq   %rax,0(%r12,%rcx,1)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
pmap_page_remove(fffffd80070ee400) at pmap_page_remove+0x43d _atomic_swap_64 sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:117 [inline]
pmap_page_remove(fffffd80070ee400) at pmap_page_remove+0x43d sys/arch/amd64/amd64/pmap.c:2014
uvm_anfree_list(fffffd806da237b0,0) at uvm_anfree_list+0xd6 sys/uvm/uvm_anon.c:112
amap_wipeout(fffffd806ffa8b40) at amap_wipeout+0x248 sys/uvm/uvm_amap.c:-1
uvm_unmap_detach(ffff80002a86b450,0) at uvm_unmap_detach+0x8a sys/uvm/uvm_map.c:1353
uvm_map_teardown(fffffd8073b65738) at uvm_map_teardown+0x357 sys/uvm/uvm_map.c:2525
exit1(ffff80002a776008,43,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259
sys_exit(ffff80002a776008,ffff80002a86b610,ffff80002a86b560) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a86b610) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a86b610) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x781ca38525f0, count: 6
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