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xfs: initialize the check_owner object fully

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Initialize the check_owner list head so that we don't corrupt the list.
Reduce the scope of the object pointer.

Fixes: 858333dcf0 ("xfs: check btree block ownership with bnobt/rmapbt when scrubbing btree")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2022-11-06 17:03:15 -08:00
parent 48ff40458f
commit fcd2a43488
1 changed files with 4 additions and 1 deletions
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5
fs/xfs/scrub/btree.c
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@ -408,7 +408,6 @@ xchk_btree_check_owner(
struct xfs_buf *bp)
{
struct xfs_btree_cur *cur = bs->cur;
struct check_owner *co;
/*
* In theory, xfs_btree_get_block should only give us a null buffer
@ -431,10 +430,14 @@ xchk_btree_check_owner(
* later scanning.
*/
if (cur->bc_btnum == XFS_BTNUM_BNO || cur->bc_btnum == XFS_BTNUM_RMAP) {
struct check_owner *co;
co = kmem_alloc(sizeof(struct check_owner),
KM_MAYFAIL);
if (!co)
return -ENOMEM;
INIT_LIST_HEAD(&co->list);
co->level = level;
co->daddr = xfs_buf_daddr(bp);
list_add_tail(&co->list, &bs->to_check);