Commit 955256f2 authored by Josef Bacik's avatar Josef Bacik
Browse files

Btrfs: fix use after free in O_DIRECT

This fixes a bug where we use dip after we have freed it.  Instead just use the
file_offset that was passed to the function.  Thanks,
Signed-off-by: default avatarJosef Bacik <>
parent 5a92bc88
......@@ -5934,8 +5934,7 @@ free_ordered:
if (write) {
struct btrfs_ordered_extent *ordered;
ordered = btrfs_lookup_ordered_extent(inode,
ordered = btrfs_lookup_ordered_extent(inode, file_offset);
if (!test_bit(BTRFS_ORDERED_PREALLOC, &ordered->flags) &&
!test_bit(BTRFS_ORDERED_NOCOW, &ordered->flags))
btrfs_free_reserved_extent(root, ordered->start,
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