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authorShu Wang <shuwang@redhat.com>2017-11-20 08:54:13 -0800
committerDarrick J. Wong <darrick.wong@oracle.com>2017-11-21 01:44:53 -0800
commit6818caa4cdc95d9ec5642a4439f8271a80189b48 (patch)
tree9dcba1d9920bc3c5b9f78d3c7fd52bcb2fff1d37 /fs/xfs
parent2015a63dce8d73a439232a0d5162c88d8513101e (diff)
downloadlinux-6818caa4cdc95d9ec5642a4439f8271a80189b48.tar.bz2
xfs: fix memory leak in xfs_iext_free_last_leaf
found the issue by kmemleak. unreferenced object 0xffff8800674611c0 (size 16): xfs_iext_insert+0x82a/0xa90 [xfs] xfs_bmap_add_extent_hole_delay+0x1e5/0x5b0 [xfs] xfs_bmapi_reserve_delalloc+0x483/0x530 [xfs] xfs_file_iomap_begin+0xac8/0xd40 [xfs] iomap_apply+0xb8/0x1b0 iomap_file_buffered_write+0xac/0xe0 xfs_file_buffered_aio_write+0x198/0x420 [xfs] xfs_file_write_iter+0x23f/0x2a0 [xfs] __vfs_write+0x23e/0x340 vfs_write+0xe9/0x240 SyS_write+0xa1/0x120 do_syscall_64+0xda/0x260 Signed-off-by: Shu Wang <shuwang@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/libxfs/xfs_iext_tree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_iext_tree.c b/fs/xfs/libxfs/xfs_iext_tree.c
index 19e546a41251..89bf16b4d937 100644
--- a/fs/xfs/libxfs/xfs_iext_tree.c
+++ b/fs/xfs/libxfs/xfs_iext_tree.c
@@ -850,9 +850,9 @@ static void
xfs_iext_free_last_leaf(
struct xfs_ifork *ifp)
{
- ifp->if_u1.if_root = NULL;
ifp->if_height--;
kmem_free(ifp->if_u1.if_root);
+ ifp->if_u1.if_root = NULL;
}
void