linux-kernel - [PATCH 3.12 023/101] audit: keep inode pinned

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Message-Id: <24c0902a16c983802418f4a77b7fca0604f3a3e6.1417605922.git.jslaby@suse.cz>
Date:	Wed,  3 Dec 2014 12:25:45 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Miklos Szeredi <mszeredi@...e.cz>,
	Paul Moore <pmoore@...hat.com>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 023/101] audit: keep inode pinned

From: Miklos Szeredi <mszeredi@...e.cz>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 799b601451b21ebe7af0e6e8f6e2ccd4683c5064 upstream.

Audit rules disappear when an inode they watch is evicted from the cache.
This is likely not what we want.

The guilty commit is "fsnotify: allow marks to not pin inodes in core",
which didn't take into account that audit_tree adds watches with a zero
mask.

Adding any mask should fix this.

Fixes: 90b1e7a57880 ("fsnotify: allow marks to not pin inodes in core")
Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
Signed-off-by: Paul Moore <pmoore@...hat.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 kernel/audit_tree.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 43c307dc9453..00c4459f76df 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -154,6 +154,7 @@ static struct audit_chunk *alloc_chunk(int count)
 		chunk->owners[i].index = i;
 	}
 	fsnotify_init_mark(&chunk->mark, audit_tree_destroy_watch);
+	chunk->mark.mask = FS_IN_IGNORED;
 	return chunk;
 }
 
-- 
2.1.3

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