From 497e3a89ba46e0f1b1e7772bbd1e1a4c3fff17a5 Mon Sep 17 00:00:00 2001 From: Sergei Antonov Date: Mon, 12 Jun 2023 22:59:10 +0300 Subject: [PATCH] hash: fix a memory leak memalign() returns a pointer which is to be freed by free(). To call unmap_sysmem() is incorrect, furthermore it was called in a wrong scope. Also add a check for allocation error. Fixes: d7af2baa49c6 ("crypto/fsl: Fix HW accelerated hash commands") Cc: Breno Lima Signed-off-by: Sergei Antonov Reviewed-by: Simon Glass --- common/hash.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/common/hash.c b/common/hash.c index 9a52d60..cbffdfd 100644 --- a/common/hash.c +++ b/common/hash.c @@ -586,6 +586,8 @@ int hash_command(const char *algo_name, int flags, struct cmd_tbl *cmdtp, output = memalign(ARCH_DMA_MINALIGN, sizeof(uint32_t) * HASH_MAX_DIGEST_SIZE); + if (!output) + return CMD_RET_FAILURE; buf = map_sysmem(addr, len); algo->hash_func_ws(buf, len, output, algo->chunk_size); @@ -602,6 +604,7 @@ int hash_command(const char *algo_name, int flags, struct cmd_tbl *cmdtp, flags & HASH_FLAG_ENV)) { printf("ERROR: %s does not contain a valid " "%s sum\n", *argv, algo->name); + free(output); return 1; } if (memcmp(output, vsum, algo->digest_size) != 0) { @@ -612,6 +615,7 @@ int hash_command(const char *algo_name, int flags, struct cmd_tbl *cmdtp, for (i = 0; i < algo->digest_size; i++) printf("%02x", vsum[i]); puts(" ** ERROR **\n"); + free(output); return 1; } } else { @@ -622,10 +626,10 @@ int hash_command(const char *algo_name, int flags, struct cmd_tbl *cmdtp, store_result(algo, output, *argv, flags & HASH_FLAG_ENV); } - unmap_sysmem(output); - } + free(output); + /* Horrible code size hack for boards that just want crc32 */ } else { ulong crc; -- 2.7.4