From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Date: Fri, 4 Oct 2024 06:03:49 +0000 (+0900)
Subject: fat: fix uninitialized variable
X-Git-Tag: v5.15.169~54
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc1102b5473e323c09ab55ce6849e8c1e12f3ba3;p=thirdparty%2Fkernel%2Fstable.git

fat: fix uninitialized variable

commit 963a7f4d3b90ee195b895ca06b95757fcba02d1a upstream.

syszbot produced this with a corrupted fs image.  In theory, however an IO
error would trigger this also.

This affects just an error report, so should not be a serious error.

Link: https://lkml.kernel.org/r/87r08wjsnh.fsf@mail.parknet.co.jp
Link: https://lkml.kernel.org/r/66ff2c95.050a0220.49194.03e9.GAE@google.com
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reported-by: syzbot+ef0d7bc412553291aa86@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 5369d82e0bfb5..e69e2a4f99b92 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -1020,7 +1020,7 @@ error_inode:
 	if (corrupt < 0) {
 		fat_fs_error(new_dir->i_sb,
 			     "%s: Filesystem corrupted (i_pos %lld)",
-			     __func__, sinfo.i_pos);
+			     __func__, new_i_pos);
 	}
 	goto out;
 }