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Date: Mon, 18 Sep 2017 11:11:50 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-xfs@...r.kernel.org, "Darrick J. Wong" <darrick.wong@...cle.com>, Brian Foster <bfoster@...hat.com> Subject: [PATCH 4.9 41/78] xfs: check _btree_check_block value 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Darrick J. Wong" <darrick.wong@...cle.com> commit 1e86eabe73b73c82e1110c746ed3ec6d5e1c0a0d upstream. Check the _btree_check_block return value for the firstrec and lastrec functions, since we have the ability to signal that the repositioning did not succeed. Fixes-coverity-id: 114067 Fixes-coverity-id: 114068 Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com> Reviewed-by: Brian Foster <bfoster@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- fs/xfs/libxfs/xfs_btree.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -714,7 +714,8 @@ xfs_btree_firstrec( * Get the block pointer for this level. */ block = xfs_btree_get_block(cur, level, &bp); - xfs_btree_check_block(cur, block, level, bp); + if (xfs_btree_check_block(cur, block, level, bp)) + return 0; /* * It's empty, there is no such record. */ @@ -743,7 +744,8 @@ xfs_btree_lastrec( * Get the block pointer for this level. */ block = xfs_btree_get_block(cur, level, &bp); - xfs_btree_check_block(cur, block, level, bp); + if (xfs_btree_check_block(cur, block, level, bp)) + return 0; /* * It's empty, there is no such record. */
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