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| author |   Wenwen Wang <wenwen@cs.uga.edu> | 2020-02-01 20:38:38 +0000 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2020-02-12 17:16:31 +0100 |
| commit | f311ade3a7adf31658ed882aaab9f9879fdccef7 (patch) | |
| tree | 40edbbbdf532325f49c77ff47b276bdf259994fa /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | btrfs: do not zero f_bavail if we have available space (diff) | |
| download | linux-dev-f311ade3a7adf31658ed882aaab9f9879fdccef7.tar.xz linux-dev-f311ade3a7adf31658ed882aaab9f9879fdccef7.zip | |
btrfs: ref-verify: fix memory leaks
In btrfs_ref_tree_mod(), 'ref' and 'ra' are allocated through kzalloc() and
kmalloc(), respectively. In the following code, if an error occurs, the
execution will be redirected to 'out' or 'out_unlock' and the function will
be exited. However, on some of the paths, 'ref' and 'ra' are not
deallocated, leading to memory leaks. For example, if 'action' is
BTRFS_ADD_DELAYED_EXTENT, add_block_entry() will be invoked. If the return
value indicates an error, the execution will be redirected to 'out'. But,
'ref' is not deallocated on this path, causing a memory leak.
To fix the above issues, deallocate both 'ref' and 'ra' before exiting from
the function when an error is encountered.
CC: stable@vger.kernel.org # 4.15+
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions