[PATCH 4.9 122/134] dm era: Fix bitset memory leaks
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-03-01 18:11:13
Also in:
lkml
From: Nikos Tsironis <redacted>
commit 904e6b266619c2da5c58b5dce14ae30629e39645 upstream.
Deallocate the memory allocated for the in-core bitsets when destroying
the target and in error paths.
Fixes: eec40579d84873 ("dm: add era target")
Cc: stable@vger.kernel.org # v3.15+
Signed-off-by: Nikos Tsironis <redacted>
Reviewed-by: Ming-Hung Tsai <redacted>
Signed-off-by: Mike Snitzer <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/md/dm-era-target.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c@@ -46,6 +46,7 @@ struct writeset { static void writeset_free(struct writeset *ws) { vfree(ws->bits); + ws->bits = NULL; } static int setup_on_disk_bitset(struct dm_disk_bitset *info,
@@ -812,6 +813,8 @@ static struct era_metadata *metadata_ope static void metadata_close(struct era_metadata *md) { + writeset_free(&md->writesets[0]); + writeset_free(&md->writesets[1]); destroy_persistent_data_objects(md); kfree(md); }
@@ -849,6 +852,7 @@ static int metadata_resize(struct era_me r = writeset_alloc(&md->writesets[1], *new_size); if (r) { DMERR("%s: writeset_alloc failed for writeset 1", __func__); + writeset_free(&md->writesets[0]); return r; }
@@ -859,6 +863,8 @@ static int metadata_resize(struct era_me &value, &md->era_array_root); if (r) { DMERR("%s: dm_array_resize failed", __func__); + writeset_free(&md->writesets[0]); + writeset_free(&md->writesets[1]); return r; }