| | From | Greg Kroah-Hartman <> | | Subject | [ 087/122] dm thin: fix memory leak in process_prepared_mapping error paths | | Date | Tue, 7 Aug 2012 15:26:15 -0700 |
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From: Greg KH <gregkh@linuxfoundation.org>
3.5-stable review patch. If anyone has any objections, please let me know.
------------------ From: Joe Thornber <ejt@redhat.com>
commit 905386f82d08f66726912f303f3e6605248c60a3 upstream.
Fix memory leak in process_prepared_mapping by always freeing the dm_thin_new_mapping structs from the mapping_pool mempool on the error paths.
Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/md/dm-thin.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -859,7 +859,7 @@ static void process_prepared_mapping(str if (m->err) { cell_error(m->cell); - return; + goto out; } /* @@ -871,7 +871,7 @@ static void process_prepared_mapping(str if (r) { DMERR("dm_thin_insert_block() failed"); cell_error(m->cell); - return; + goto out; } /* @@ -886,6 +886,7 @@ static void process_prepared_mapping(str } else cell_defer(tc, m->cell, m->data_block); +out: list_del(&m->list); mempool_free(m, tc->pool->mapping_pool); }
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