This is a note to let you know that I've just added the patch titled
ubifs: Fix assertion in layout_in_gaps()
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ubifs-fix-assertion-in-layout_in_gaps.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c0082e985fdf77b02fc9e0dac3b58504dcf11b7a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= <vincent.stehle@xxxxxxxxx>
Date: Fri, 12 Aug 2016 15:26:30 +0200
Subject: ubifs: Fix assertion in layout_in_gaps()
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From: Vincent Stehlé <vincent.stehle@xxxxxxxxx>
commit c0082e985fdf77b02fc9e0dac3b58504dcf11b7a upstream.
An assertion in layout_in_gaps() verifies that the gap_lebs pointer is
below the maximum bound. When computing this maximum bound the idx_lebs
count is multiplied by sizeof(int), while C pointers arithmetic does take
into account the size of the pointed elements implicitly already. Remove
the multiplication to fix the assertion.
Fixes: 1e51764a3c2ac05a ("UBIFS: add new flash file system")
Signed-off-by: Vincent Stehlé <vincent.stehle@xxxxxxxxx>
Cc: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx>
Signed-off-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ubifs/tnc_commit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -370,7 +370,7 @@ static int layout_in_gaps(struct ubifs_i
p = c->gap_lebs;
do {
- ubifs_assert(p < c->gap_lebs + sizeof(int) * c->lst.idx_lebs);
+ ubifs_assert(p < c->gap_lebs + c->lst.idx_lebs);
written = layout_leb_in_gaps(c, p);
if (written < 0) {
err = written;
Patches currently in stable-queue which might be from vincent.stehle@xxxxxxxxx are
queue-4.4/ubifs-fix-assertion-in-layout_in_gaps.patch
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