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dm thin: fix memory leak in process_prepared_mapping error paths 

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>
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Joe Thornber 2012-07-27 15:08:05 +01:00 committed by Alasdair G Kergon
parent c66029f4d4
commit 905386f82d
1 changed files with 3 additions and 2 deletions
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5
drivers/md/dm-thin.c
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@ -870,7 +870,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m)
if (m->err) {
cell_error(m->cell);
return;
goto out;
}
/*
@ -882,7 +882,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m)
if (r) {
DMERR("dm_thin_insert_block() failed");
cell_error(m->cell);
return;
goto out;
}
/*
@ -897,6 +897,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m)
} else
cell_defer(tc, m->cell, m->data_block);
out:
list_del(&m->list);
mempool_free(m, tc->pool->mapping_pool);
}