btrfs: qgroup: don't use extent changeset when not needed

The local extent changeset is passed to clear_record_extent_bits() where
it may have some additional memory dynamically allocated for ulist. When
qgroup is disabled, the memory is leaked because in this case the
changeset is not released upon __btrfs_qgroup_release_data() return.

Since the recorded contents of the changeset are not used thereafter, just
don't pass it.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Reported-by: [email protected]
Closes: https://lore.kernel.org/lkml/[email protected]
Fixes: af0e2aab3b70 ("btrfs: qgroup: flush reservations during quota disable")
CC: [email protected] # 6.10+
Reviewed-by: Boris Burkov <[email protected]>
Reviewed-by: Qu Wenruo <[email protected]>
Signed-off-by: Fedor Pchelkin <[email protected]>
Signed-off-by: David Sterba <[email protected]>

0 files changed, 0 insertions, 0 deletions