[PATCH 2/4] libmultipath: warn if freeing path that holds mpp->hwe

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From: Martin Wilck <mwilck@xxxxxxxx>

This just adds an error message to the previous patch.

Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
 libmultipath/structs_vec.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libmultipath/structs_vec.c b/libmultipath/structs_vec.c
index 9bbe5d1..0a73d2a 100644
--- a/libmultipath/structs_vec.c
+++ b/libmultipath/structs_vec.c
@@ -93,8 +93,11 @@ int adopt_paths(vector pathvec, struct multipath *mpp)
 void orphan_path(struct path *pp, const char *reason)
 {
 	condlog(3, "%s: orphan path, %s", pp->dev, reason);
-	if (pp->mpp && pp->mpp->hwe == pp->hwe)
+	if (pp->mpp && pp->hwe && pp->mpp->hwe == pp->hwe) {
+		condlog(0, "BUG: orphaning path %s that holds hwe of %s",
+			pp->dev, pp->mpp->alias);
 		pp->mpp->hwe = NULL;
+	}
 	pp->mpp = NULL;
 	pp->dmstate = PSTATE_UNDEF;
 	pp->uid_attribute = NULL;
-- 
2.26.2


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