From 3b250ffb4113fe521a71c0a8b30340cf237c2508 Mon Sep 17 00:00:00 2001 From: Daniel Hobi Date: Wed, 18 May 2011 15:21:08 +0200 Subject: [PATCH] env_nand: zero-initialize variable nand_erase_options Commit 30486322 (nand erase: .spread, .part, .chip subcommands) added a new field to struct nand_erase_options, but forgot to update common/env_nand.c. Depending on the stack state and bad block distribution, saveenv() can thus erase more than CONFIG_ENV_RANGE bytes which may corrupt the following NAND sectors/partitions. Signed-off-by: Daniel Hobi Signed-off-by: Scott Wood --- common/env_nand.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/common/env_nand.c b/common/env_nand.c index 980425a8ee..14446a6a57 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -193,10 +193,8 @@ int saveenv(void) int ret = 0; nand_erase_options_t nand_erase_options; + memset(&nand_erase_options, 0, sizeof(nand_erase_options)); nand_erase_options.length = CONFIG_ENV_RANGE; - nand_erase_options.quiet = 0; - nand_erase_options.jffs2 = 0; - nand_erase_options.scrub = 0; if (CONFIG_ENV_RANGE < CONFIG_ENV_SIZE) return 1; @@ -249,10 +247,8 @@ int saveenv(void) char *res; nand_erase_options_t nand_erase_options; + memset(&nand_erase_options, 0, sizeof(nand_erase_options)); nand_erase_options.length = CONFIG_ENV_RANGE; - nand_erase_options.quiet = 0; - nand_erase_options.jffs2 = 0; - nand_erase_options.scrub = 0; nand_erase_options.offset = CONFIG_ENV_OFFSET; if (CONFIG_ENV_RANGE < CONFIG_ENV_SIZE) -- 2.39.5