summaryrefslogtreecommitdiff
path: root/fs/reiserfs
diff options
context:
space:
mode:
authorShigeru Yoshida <syoshida@redhat.com>2023-08-21 13:33:12 +0900
committerChristian Brauner <brauner@kernel.org>2023-09-11 14:07:46 +0200
commit2251588143f65636cf3f3f12beb009084fa2d5d7 (patch)
tree249a96e65c91f23628871bfeaab5c3a1e13d310f /fs/reiserfs
parent0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff)
reiserfs: Replace 1-element array with C99 style flex-array
UBSAN found the following issue: ================================================================================ UBSAN: array-index-out-of-bounds in fs/reiserfs/journal.c:4166:22 index 1 is out of range for type '__le32 [1]' This is because struct reiserfs_journal_desc uses 1-element array for dynamically sized array member, j_realblock. This patch fixes this issue by replacing the 1-element array member with C99 style flex-array. This patch also fixes the same issue in struct reiserfs_journal_commit as the same manner. Fixes: f466c6fdb3b1 ("move private bits of reiserfs_fs.h to fs/reiserfs/reiserfs.h") Signed-off-by: Shigeru Yoshida <syoshida@redhat.com> Message-Id: <20230821043312.1444068-1-syoshida@redhat.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/reiserfs')
-rw-r--r--fs/reiserfs/reiserfs.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
index b81749492ef9..7d12b8c5b2fa 100644
--- a/fs/reiserfs/reiserfs.h
+++ b/fs/reiserfs/reiserfs.h
@@ -2699,7 +2699,7 @@ struct reiserfs_iget_args {
#define get_journal_desc_magic(bh) (bh->b_data + bh->b_size - 12)
#define journal_trans_half(blocksize) \
- ((blocksize - sizeof (struct reiserfs_journal_desc) + sizeof (__u32) - 12) / sizeof (__u32))
+ ((blocksize - sizeof(struct reiserfs_journal_desc) - 12) / sizeof(__u32))
/* journal.c see journal.c for all the comments here */
@@ -2711,7 +2711,7 @@ struct reiserfs_journal_desc {
__le32 j_len;
__le32 j_mount_id; /* mount id of this trans */
- __le32 j_realblock[1]; /* real locations for each block */
+ __le32 j_realblock[]; /* real locations for each block */
};
#define get_desc_trans_id(d) le32_to_cpu((d)->j_trans_id)
@@ -2726,7 +2726,7 @@ struct reiserfs_journal_desc {
struct reiserfs_journal_commit {
__le32 j_trans_id; /* must match j_trans_id from the desc block */
__le32 j_len; /* ditto */
- __le32 j_realblock[1]; /* real locations for each block */
+ __le32 j_realblock[]; /* real locations for each block */
};
#define get_commit_trans_id(c) le32_to_cpu((c)->j_trans_id)