From: Jeff Mahoney <jeffm@suse.com>
Date: Fri, 3 Nov 2006 06:07:20 +0000 (-0800)
Subject: [PATCH] reiserfs: reset errval after initializing bitmap cache
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d2c89a4284ea4ecfba77c6f2d7d6f96d52e801e5;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] reiserfs: reset errval after initializing bitmap cache

Callers after reiserfs_init_bitmap_cache() expect errval to contain -EINVAL
until much later.  If a condition fails before errval is reset later,
reiserfs_fill_super() will mistakenly return 0, causing an Oops in
do_add_mount().  This patch resets errval to -EINVAL after the call.

I view this as a temporary fix and real error codes should be used
throughout reiserfs_fill_super().

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 9041802df832..17249994110f 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1619,6 +1619,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
 		      "jmacd-8: reiserfs_fill_super: unable to read bitmap");
 		goto error;
 	}
+	errval = -EINVAL;
 #ifdef CONFIG_REISERFS_CHECK
 	SWARN(silent, s, "CONFIG_REISERFS_CHECK is set ON");
 	SWARN(silent, s, "- it is slow mode for debugging.");