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loader: check get_image_size() return value

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since a negative value means it errored.

hw/core/loader.c:149:9: warning: Loss of sign in implicit conversion
    if (size > max_sz) {
        ^~~~
hw/core/loader.c:171:9: warning: Loss of sign in implicit conversion
    if (size > memory_region_size(mr)) {
        ^~~~

Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Philippe Mathieu-Daudé 2017-07-26 23:42:07 -03:00 committed by Michael Tokarev
parent b94b330e23
commit 2a4e2e4919
1 changed files with 2 additions and 2 deletions
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4
hw/core/loader.c
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@ -146,7 +146,7 @@ int load_image_targphys_as(const char *filename,
int size;
size = get_image_size(filename);
if (size > max_sz) {
if (size < 0 || size > max_sz) {
return -1;
}
if (size > 0) {
@ -168,7 +168,7 @@ int load_image_mr(const char *filename, MemoryRegion *mr)
size = get_image_size(filename);
if (size > memory_region_size(mr)) {
if (size < 0 || size > memory_region_size(mr)) {
return -1;
}
if (size > 0) {