From: Eric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com>
Date: Fri, 13 Jul 2007 21:47:58 +0000 (-0500)
Subject: 9p: fix a race condition bug in umount which caused a segfault
X-Git-Tag: v3.12-rc1~28649^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0af8887ebf4556a76680a61b0bb156d934702c63;p=kernel%2Fkernel-generic.git

9p: fix a race condition bug in umount which caused a segfault

umounting partitions after heavy activity would sometimes trigger a
segmentation violation.  This fix appears to remove that problem.
Fix originally provided by Latchesar Ionkov.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
---

diff --git a/net/9p/client.c b/net/9p/client.c
index bb2b8a3..cb17075 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -127,12 +127,12 @@ void p9_client_destroy(struct p9_client *clnt)
 		clnt->trans = NULL;
 	}
 
-	if (clnt->fidpool)
-		p9_idpool_destroy(clnt->fidpool);
-
 	list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist)
 		p9_fid_destroy(fid);
 
+	if (clnt->fidpool)
+		p9_idpool_destroy(clnt->fidpool);
+
 	kfree(clnt);
 }
 EXPORT_SYMBOL(p9_client_destroy);