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(parent: c32b1ec) | patch
xfs: check _alloc_read_agf buffer pointer before using
authorDarrick J. Wong <darrick.wong@oracle.com>
Sun, 17 Sep 2017 21:06:38 +0000 (14:06 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 20 Sep 2017 06:19:58 +0000 (08:19 +0200)
commit01bc132048cf9505ed49152cc82e583b18c5538d
tree8fcb15329670c500f92b99f555281b010e377dadtree | snapshot
parentc32b1ec8a266476494f04843434538cdb25d9190commit | diff
xfs: check _alloc_read_agf buffer pointer before using

commit 10479e2dea83d4c421ad05dfc55d918aa8dfc0cd upstream.

In some circumstances, _alloc_read_agf can return an error code of zero
but also a null AGF buffer pointer.  Check for this and jump out.

Fixes-coverity-id: 1415250
Fixes-coverity-id: 1415320
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/xfs/libxfs/xfs_refcount.c diff | blob | history
fs/xfs/xfs_reflink.c diff | blob | history