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authorDan Carpenter <dan.carpenter@oracle.com>2018-06-20 13:41:51 +0300
committerJens Axboe <axboe@kernel.dk>2018-06-20 12:04:06 -0600
commitce042c183bcb94eb2919e8036473a1fc203420f9 (patch)
treecc88e5d4ee53d4aee85e5607b1e98a9dae5de2cf /block/sed-opal.c
parenta1e79188628580465ac6d7a93a313336ee3364f1 (diff)
downloadlinux-ce042c183bcb94eb2919e8036473a1fc203420f9.tar.bz2
block: sed-opal: Fix a couple off by one bugs
resp->num is the number of tokens in resp->tok[]. It gets set in response_parse(). So if n == resp->num then we're reading beyond the end of the data. Fixes: 455a7b238cd6 ("block: Add Sed-opal library") Reviewed-by: Scott Bauer <scott.bauer@intel.com> Tested-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/sed-opal.c')
-rw-r--r--block/sed-opal.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/sed-opal.c b/block/sed-opal.c
index 945f4b8610e0..e0de4dd448b3 100644
--- a/block/sed-opal.c
+++ b/block/sed-opal.c
@@ -877,7 +877,7 @@ static size_t response_get_string(const struct parsed_resp *resp, int n,
return 0;
}
- if (n > resp->num) {
+ if (n >= resp->num) {
pr_debug("Response has %d tokens. Can't access %d\n",
resp->num, n);
return 0;
@@ -916,7 +916,7 @@ static u64 response_get_u64(const struct parsed_resp *resp, int n)
return 0;
}
- if (n > resp->num) {
+ if (n >= resp->num) {
pr_debug("Response has %d tokens. Can't access %d\n",
resp->num, n);
return 0;