panic: kernel diagnostic assertion "amap->am_buckets[bucket] == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_amap.c", line 138
Starting stack trace...
panic(ffffffff8335e2f9) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff8339eb18,ffffffff83338361,8a,ffffffff833c064b) at __assert+0x29 sys/kern/subr_prf.c:-1
amap_chunk_get(fffffd8066b4c000,17,1,2) at amap_chunk_get+0x2fd
amap_add(fffffd806bd19cf8,17000,fffffd806c416318,0) at amap_add+0xb1 sys/uvm/uvm_amap.c:-1
uvm_fault_lower(ffff80003c964fa0,ffff80003c964fd8,ffff80003c964f20) at uvm_fault_lower+0x639 sys/uvm/uvm_fault.c:1484
uvm_fault(fffffd806c1efe78,f9b1aa59000,0,2) at uvm_fault+0x241 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c965140,f9b1aa595a0) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c965140) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:622
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x78ae4d840540, count: 248
End of stack trace.