tree 7f380a62ef3fb328e06ae5afce8e3e6946bdd017
parent 3ef3959b29c4a5bd65526ab310a1a18ae533172a
author Filipe Manana <fdmanana@suse.com> 1596014270 +0100
committer David Sterba <dsterba@suse.com> 1597078710 +0200

btrfs: fix memory leaks after failure to lookup checksums during inode logging

While logging an inode, at copy_items(), if we fail to lookup the checksums
for an extent we release the destination path, free the ins_data array and
then return immediately. However a previous iteration of the for loop may
have added checksums to the ordered_sums list, in which case we leak the
memory used by them.

So fix this by making sure we iterate the ordered_sums list and free all
its checksums before returning.

Fixes: 3650860b90cc2a ("Btrfs: remove almost all of the BUG()'s from tree-log.c")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>