[lvm-devel] [PATCH 04/29] Reset vg pointer after release

[Zdenek Kabelac]

Set vg to NULL after releasing it as the following memlock() test may
lead to goto for the second call of vg_release() with the same vg pointer.

Signed-off-by: Zdenek Kabelac <zkabelac at redhat.com>
---
 lib/metadata/metadata.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/lib/metadata/metadata.c b/lib/metadata/metadata.c
index 780b806..743d633 100644
--- a/lib/metadata/metadata.c
+++ b/lib/metadata/metadata.c
@@ -3117,6 +3117,7 @@ static struct volume_group *_vg_read_by_vgid(struct cmd_context *cmd,
 			return vg;
 		}
 		vg_release(vg);
+		vg = NULL; /* reset so memlock goto out is safe */
 	}
 
 	/* Mustn't scan if memory locked: ensure cache gets pre-populated! */
-- 
1.7.3.2