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migration: don't segfault on invalid input
host_from_stream_offset returns NULL on error, return error instead of trying to use that address, to avoid segfault on invalid stream. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -390,6 +390,9 @@ int ram_load(QEMUFile *f, void *opaque, int version_id)
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host = qemu_get_ram_ptr(addr);
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else
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host = host_from_stream_offset(f, addr, flags);
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if (!host) {
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return -EINVAL;
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}
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ch = qemu_get_byte(f);
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memset(host, ch, TARGET_PAGE_SIZE);
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