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asahi/lib: fix overread with stateful

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28483>
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Alyssa Rosenzweig 2024-02-18 08:42:57 -04:00 • committed by Marge Bot
parent 0a8d0217c9
commit 007a440a33
1 changed files with 3 additions and 1 deletions
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4
src/asahi/lib/decode.c
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@ -301,17 +301,19 @@ agxdecode_stateful(uint64_t va, const char *label, decode_cmd decoder,
unsigned sp = 0;
uint8_t buf[1024];
size_t size = sizeof(buf);
if (!lib_config.read_gpu_mem) {
struct agx_bo *alloc = agxdecode_find_mapped_gpu_mem_containing(va);
assert(alloc != NULL && "nonexistent object");
fprintf(agxdecode_dump_stream, "%s (%" PRIx64 ", handle %u)\n", label, va,
alloc->handle);
size = MIN2(size, alloc->size - (va - alloc->ptr.gpu));
} else {
fprintf(agxdecode_dump_stream, "%s (%" PRIx64 ")\n", label, va);
}
fflush(agxdecode_dump_stream);
int len = agxdecode_fetch_gpu_array(va, buf);
int len = agxdecode_fetch_gpu_mem(va, size, buf);
int left = len;
uint8_t *map = buf;