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authorArjan van de Ven <arjan@infradead.org>2008-10-21 06:47:33 -0700
committerAl Viro <viro@zeniv.linux.org.uk>2008-10-23 05:17:12 -0400
commitfd217f4d70172c526478f2bc76859e909fdfa674 (patch)
treedf707d185b3009ada981c17211a6e02097e8fc7b
parent08b9fe6b12d32324f311c46b88102b6b9067d434 (diff)
downloadop-kernel-dev-fd217f4d70172c526478f2bc76859e909fdfa674.zip
op-kernel-dev-fd217f4d70172c526478f2bc76859e909fdfa674.tar.gz
[PATCH] fs: add a sanity check in d_free
Hi Al, remember that debug session we did at KS? You suggested this patch back then.... From 7751eaf30474b8cbfaea64795805a17eab05ac53 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven <arjan@linux.intel.com> Date: Tue, 16 Sep 2008 16:51:17 -0700 Subject: [PATCH] fs: add a sanity check in d_free we're seeing some corruption in the dentry->d_alias list that appears like a free of an entry still on the list; this patch adds a WARN_ON() to catch this scenario, as suggested by Al Viro Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
-rw-r--r--fs/dcache.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 12eac83..a1d86c7 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -69,6 +69,7 @@ struct dentry_stat_t dentry_stat = {
static void __d_free(struct dentry *dentry)
{
+ WARN_ON(!list_empty(&dentry->d_alias));
if (dname_external(dentry))
kfree(dentry->d_name.name);
kmem_cache_free(dentry_cache, dentry);
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