qubes-linux-kernel/patches.fixes/novfs-unlink-oops

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2011-04-19 20:09:59 +00:00
From: Sankar P <psankar@novell.com>
Subject: novfs: Fix for the issue of kernel dumps core on restart
References: bnc#641811
Patch-mainline: No
This patch fixes a bug that cause kernel to dump core on restart,
by rectifying the counter and dentry manipulation code.
Signed-off-by: Sankar P <psankar@novell.com>
Acked-by: Jan Kara <jack@suse.cz>
diff --git a/fs/novfs/daemon.c b/fs/novfs/daemon.c
index f0fd5d6..6e7fb5d 100644
--- a/fs/novfs/daemon.c
+++ b/fs/novfs/daemon.c
@@ -1857,14 +1857,15 @@ static long local_unlink(const char *pathname)
while (*c != '\0') {
if (*c == '/')
name = ++c;
- c++;
+ else
+ c++;
}
dentry = lookup_one_len(name, nd.path.dentry, strlen(name));
error = PTR_ERR(dentry);
if (!IS_ERR(dentry)) {
DbgPrint("dentry %p", dentry);
- if (!(dentry->d_inode->i_mode & S_IFLNK)) {
+ if (!(dentry->d_inode) || !(dentry->d_inode->i_mode & S_IFLNK)) {
DbgPrint("%s not a link", name);
error = -ENOENT;
goto exit1;
--
1.7.1