Move 0 length buffer to end of structure to stop overwriting fallback request data. This doesn't cause a bug itself as the buffer is never used alongside the fallback but should be changed. Signed-off-by: Will Thomas <will.thomas@xxxxxxxxxx> Reviewed-by: James Hartley <james.hartley@xxxxxxxxxx> --- drivers/crypto/img-hash.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c index e5c941b..de2b86e 100644 --- a/drivers/crypto/img-hash.c +++ b/drivers/crypto/img-hash.c @@ -102,8 +102,10 @@ struct img_hash_request_ctx { unsigned long op; size_t bufcnt; - u8 buffer[0] __aligned(sizeof(u32)); struct ahash_request fallback_req; + + /* Zero length buffer must remain last member of struct */ + u8 buffer[0] __aligned(sizeof(u32)); }; struct img_hash_ctx { -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html