When running qemu-riscv64 on a riscv64 host executing a ET_EXEC riscv64 binary it cannot allocate memory for the stack:
$ qemu-riscv64 -d page ./hello.riscv64 host mmap_min_addr=0x10000 Locating guest address space @ 0x3ee000 page layout changed following mmap start end size prot 0000000000010000-0000000000013000 0000000000003000 --- page layout changed following mmap start end size prot 0000000000010000-0000000000011000 0000000000001000 r-x 0000000000011000-0000000000013000 0000000000002000 --- page layout changed following mmap start end size prot 0000000000010000-0000000000011000 0000000000001000 r-x 0000000000011000-0000000000013000 0000000000002000 rw- mmap stack: Cannot allocate memory The issue is that guest_base is non-zero, which turns the target_mmap call with zero base in setup_arg_pages into a host mmap call with non-zero base. On other hosts like x86_64 or aarch64, guest_base remains zero and the issue does not occur. -- Andreas Schwab, SUSE Labs, sch...@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different."
