5.4-stable review patch. If anyone has any objections, please let me know.
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From: Mikulas Patocka mpatocka@redhat.com
[ Upstream commit 77b8e6fbf9848d651f5cb7508f18ad0971f3ffdb ]
MAX_TAG_SIZE was 0x1a8 and it may be truncated in the "bi->metadata_size = ic->tag_size" assignment. We need to limit it to 255.
Signed-off-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-integrity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index 15580ba773e72..38791b7e59ba3 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -116,7 +116,7 @@ struct journal_sector { commit_id_t commit_id; };
-#define MAX_TAG_SIZE (JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK])) +#define MAX_TAG_SIZE 255
#define METADATA_PADDING_SECTORS 8