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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-02 19:05:48 +0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-07 21:19:10 +0400
commit2f3edc6936e3f6be3f1df1e89c141ae028fa605e (patch)
tree14198ea135c600b42e4c7416db44967a6517a2db /include/linux/transport_class.h
parentfa8e36c39b00a219d2c37250e493c3421e0e67e9 (diff)
downloadlinux-2f3edc6936e3f6be3f1df1e89c141ae028fa605e.tar.xz
[SCSI] transport_class: BUG if we can't release the attribute container
Every current transport class calls transport_container_release but ignores the return value. This is catastrophic if it returns an error because the containers are part of a global list and the next action of almost every transport class is to free the memory used by the container. Fix this by making transport_container_release a void, but making it BUG if attribute_container_release returns an error ... this catches the root cause of a system panic much earlier. If we don't do this, we get an eventual BUG when the attribute container list notices the corruption caused by the freed memory it's still referencing. Also made attribute_container_release __must_check as a reminder. Cc: Greg KH <greg@kroah.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/linux/transport_class.h')
-rw-r--r--include/linux/transport_class.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/transport_class.h b/include/linux/transport_class.h
index 1d6cc22e5f42..6696cf79c4f7 100644
--- a/include/linux/transport_class.h
+++ b/include/linux/transport_class.h
@@ -86,9 +86,10 @@ static inline int transport_container_register(struct transport_container *tc)
return attribute_container_register(&tc->ac);
}
-static inline int transport_container_unregister(struct transport_container *tc)
+static inline void transport_container_unregister(struct transport_container *tc)
{
- return attribute_container_unregister(&tc->ac);
+ if (unlikely(attribute_container_unregister(&tc->ac)))
+ BUG();
}
int transport_class_register(struct transport_class *);