login: 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(ffffffff83372854) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b2fbc,ffffffff8334a8d8,8a,ffffffff833d3410) at __assert+0x29 sys/kern/subr_prf.c:-1
amap_chunk_get(fffffd806869f630,2a,1,2) at amap_chunk_get+0x2fd
amap_add(fffffd806c964a08,2a000,fffffd806e5b7768,0) at amap_add+0xb1 sys/uvm/uvm_amap.c:-1
uvm_fault_lower(ffff80003c988ff0,ffff80003c989028,ffff80003c988f70) at uvm_fault_lower+0x639 sys/uvm/uvm_fault.c:1484
uvm_fault(fffffd8077958b98,f10cae3e000,0,2) at uvm_fault+0x241 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c989190,f10cae3e000) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c989190) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:622
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x72d1ff7971a0, count: 248
End of stack trace.