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Date: Tue, 4 Aug 2015 14:56:37 +0200 From: Philipp Reisner <philipp.reisner@...bit.com> To: linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk> Cc: drbd-dev@...ts.linbit.com Subject: [PATCH 13/19] drbd: fix memory leak in drbd_adm_resize From: Oleg Drokin <green@...uxhacker.ru> new_disk_conf could be leaked if the follow on checks fail, so make sure to free it on error if it was not assigned yet. Found with smatch. Signed-off-by: Oleg Drokin <green@...uxhacker.ru> Signed-off-by: Philipp Reisner <philipp.reisner@...bit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@...bit.com> --- drivers/block/drbd/drbd_nl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 3925f8e..1d42c4f 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -2705,6 +2705,7 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info) mutex_unlock(&device->resource->conf_update); synchronize_rcu(); kfree(old_disk_conf); + new_disk_conf = NULL; } ddsf = (rs.resize_force ? DDSF_FORCED : 0) | (rs.no_resync ? DDSF_NO_RESYNC : 0); @@ -2738,6 +2739,7 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info) fail_ldev: put_ldev(device); + kfree(new_disk_conf); goto fail; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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