From: David Woodhouse <dwmw2@infradead.org>
Date: Sun, 28 May 2006 21:13:25 +0000 (+0100)
Subject: [JFFS2] Fix oops when marking space dirty in scan, but no previous node exists.
X-Git-Tag: v2.6.18-rc1~1105^2~33
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ebf09c2491433a499e0ae7723d04e9e810afa84;p=linux-2.6

[JFFS2] Fix oops when marking space dirty in scan, but no previous node exists.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
---

diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c
index 5d36e9b4d7..927dfe42ba 100644
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -1139,7 +1139,7 @@ int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb
 		BUG();
 	}
 	/* REF_EMPTY_NODE is !obsolete, so that works OK */
-	if (ref_obsolete(jeb->last_node)) {
+	if (jeb->last_node && ref_obsolete(jeb->last_node)) {
 #ifdef TEST_TOTLEN
 		jeb->last_node->__totlen += size;
 #endif