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Print actual error on common mmap/malloc failures #34

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il-steffen opened this issue Oct 2, 2022 · 0 comments

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il-steffen commented Oct 2, 2022

Lets add proper checks for common mmap/malloc failure modes such as #27 or this (from discord):

qemu-system-x86_64: /home/user/kAFL/kafl/qemu/nyx/snapshot/memory/shadow_memory.c:288: shadow_memory_init_from_snapshot: Assertion `mmap(host_addr, self->ram_regions[i].size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_FIXED, self->snapshot_ptr_fd, self->ram_regions[i].offset) != MAP_FAILED' failed.

Printing errno followed by exit() is probably more useful than assert().

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