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Fix repeatedly initialize shared memory data and protect the memory's fields (#2673)

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Avoid repeatedly initializing the shared memory data when creating the child
thread in lib-pthread or lib-wasi-threads.

Add shared memory lock when accessing some fields of the memory instance
if the memory instance is shared.

Init shared memory's memory_data_size/memory_data_end fields according to
the current page count but not max page count.

Add wasm_runtime_set_mem_bound_check_bytes, and refine the error message
when shared memory flag is found but the feature isn't enabled.
This commit is contained in:
Wenyong Huang
2023-10-30 11:07:01 +08:00
committed by GitHub
parent 51a6b069d2
commit 4b1a6e5017
8 changed files with 195 additions and 110 deletions
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10
core/iwasm/interpreter/wasm_loader.c
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@ -1375,7 +1375,15 @@ load_memory(const uint8 **p_buf, const uint8 *buf_end, WASMMemory *memory,
return false;
}
if (memory->flags > 1) {
set_error_buf(error_buf, error_buf_size, "integer too large");
if (memory->flags & 2) {
set_error_buf(error_buf, error_buf_size,
"shared memory flag was found, "
"please enable shared memory, lib-pthread "
"or lib-wasi-threads");
}
else {
set_error_buf(error_buf, error_buf_size, "invalid memory flags");
}
return false;
}
#else