From: "Darrick J. Wong" <djwong@xxxxxxxxxx>
commit ad206ae50eca62836c5460ab5bbf2a6c59a268e7 upstream.
Check that the number of recovered log iovecs is what is expected for
the xattri opcode is expecting.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Catherine Hoang <catherine.hoang@xxxxxxxxxx>
Acked-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/xfs_attr_item.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
--- a/fs/xfs/xfs_attr_item.c
+++ b/fs/xfs/xfs_attr_item.c
@@ -719,6 +719,7 @@ xlog_recover_attri_commit_pass2(
const void *attr_value = NULL;
const void *attr_name;
size_t len;
+ unsigned int op;
attri_formatp = item->ri_buf[0].i_addr;
attr_name = item->ri_buf[1].i_addr;
@@ -737,6 +738,32 @@ xlog_recover_attri_commit_pass2(
return -EFSCORRUPTED;
}
+ /* Check the number of log iovecs makes sense for the op code. */
+ op = attri_formatp->alfi_op_flags & XFS_ATTRI_OP_FLAGS_TYPE_MASK;
+ switch (op) {
+ case XFS_ATTRI_OP_FLAGS_SET:
+ case XFS_ATTRI_OP_FLAGS_REPLACE:
+ /* Log item, attr name, attr value */
+ if (item->ri_total != 3) {
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+ attri_formatp, len);
+ return -EFSCORRUPTED;
+ }
+ break;
+ case XFS_ATTRI_OP_FLAGS_REMOVE:
+ /* Log item, attr name */
+ if (item->ri_total != 2) {
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+ attri_formatp, len);
+ return -EFSCORRUPTED;
+ }
+ break;
+ default:
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
+ attri_formatp, len);
+ return -EFSCORRUPTED;
+ }
+
/* Validate the attr name */
if (item->ri_buf[1].i_len !=
xlog_calc_iovec_len(attri_formatp->alfi_name_len)) {
Patches currently in stable-queue which might be from catherine.hoang@xxxxxxxxxx are
queue-6.6/xfs-enforce-one-namespace-per-attribute.patch
queue-6.6/xfs-use-dontcache-for-grabbing-inodes-during-scrub.patch
queue-6.6/xfs-revert-commit-44af6c7e59b12.patch
queue-6.6/xfs-check-shortform-attr-entry-flags-specifically.patch
queue-6.6/xfs-make-the-seq-argument-to-xfs_bmapi_convert_delalloc-optional.patch
queue-6.6/xfs-check-opcode-and-iovec-count-match-in-xlog_recover_attri_commit_pass2.patch
queue-6.6/xfs-allow-symlinks-with-short-remote-targets.patch
queue-6.6/xfs-match-lock-mode-in-xfs_buffered_write_iomap_begin.patch
queue-6.6/xfs-require-xfs_sb_feat_incompat_log_xattrs-for-attr-log-intent-item-recovery.patch
queue-6.6/xfs-allow-unlinked-symlinks-and-dirs-with-zero-size.patch
queue-6.6/xfs-restrict-when-we-try-to-align-cow-fork-delalloc-to-cowextsz-hints.patch
queue-6.6/xfs-fix-xfs_bmap_add_extent_delay_real-for-partial-conversions.patch
queue-6.6/xfs-fix-missing-check-for-invalid-attr-flags.patch
queue-6.6/xfs-validate-recovered-name-buffers-when-recovering-xattr-items.patch
queue-6.6/xfs-make-xfs_bmapi_convert_delalloc-to-allocate-the-target-offset.patch
queue-6.6/xfs-convert-delayed-extents-to-unwritten-when-zeroing-post-eof-blocks.patch
queue-6.6/xfs-fix-freeing-speculative-preallocations-for-preallocated-files.patch
queue-6.6/xfs-fix-unlink-vs-cluster-buffer-instantiation-race.patch
queue-6.6/xfs-make-sure-sb_fdblocks-is-non-negative.patch
queue-6.6/xfs-remove-a-racy-if_bytes-check-in-xfs_reflink_end_cow_extent.patch
queue-6.6/xfs-fix-error-returns-from-xfs_bmapi_write.patch
