This is a note to let you know that I've just added the patch titled
lib/ucs2_string: Correct ucs2 -> utf8 conversion
to the 3.14-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:
lib-ucs2_string-correct-ucs2-utf8-conversion.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a68075908a37850918ad96b056acc9ac4ce1bd90 Mon Sep 17 00:00:00 2001
From: Jason Andryuk <jandryuk@xxxxxxxxx>
Date: Fri, 12 Feb 2016 23:13:33 +0000
Subject: lib/ucs2_string: Correct ucs2 -> utf8 conversion
From: Jason Andryuk <jandryuk@xxxxxxxxx>
commit a68075908a37850918ad96b056acc9ac4ce1bd90 upstream.
The comparisons should be >= since 0x800 and 0x80 require an additional bit
to store.
For the 3 byte case, the existing shift would drop off 2 more bits than
intended.
For the 2 byte case, there should be 5 bits bits in byte 1, and 6 bits in
byte 2.
Signed-off-by: Jason Andryuk <jandryuk@xxxxxxxxx>
Reviewed-by: Laszlo Ersek <lersek@xxxxxxxxxx>
Cc: Peter Jones <pjones@xxxxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxx>
Cc: "Lee, Chun-Yi" <jlee@xxxxxxxx>
Signed-off-by: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
lib/ucs2_string.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/lib/ucs2_string.c
+++ b/lib/ucs2_string.c
@@ -59,9 +59,9 @@ ucs2_utf8size(const ucs2_char_t *src)
for (i = 0; i < ucs2_strlen(src); i++) {
u16 c = src[i];
- if (c > 0x800)
+ if (c >= 0x800)
j += 3;
- else if (c > 0x80)
+ else if (c >= 0x80)
j += 2;
else
j += 1;
@@ -88,19 +88,19 @@ ucs2_as_utf8(u8 *dest, const ucs2_char_t
for (i = 0; maxlength && i < limit; i++) {
u16 c = src[i];
- if (c > 0x800) {
+ if (c >= 0x800) {
if (maxlength < 3)
break;
maxlength -= 3;
dest[j++] = 0xe0 | (c & 0xf000) >> 12;
- dest[j++] = 0x80 | (c & 0x0fc0) >> 8;
+ dest[j++] = 0x80 | (c & 0x0fc0) >> 6;
dest[j++] = 0x80 | (c & 0x003f);
- } else if (c > 0x80) {
+ } else if (c >= 0x80) {
if (maxlength < 2)
break;
maxlength -= 2;
- dest[j++] = 0xc0 | (c & 0xfe0) >> 5;
- dest[j++] = 0x80 | (c & 0x01f);
+ dest[j++] = 0xc0 | (c & 0x7c0) >> 6;
+ dest[j++] = 0x80 | (c & 0x03f);
} else {
maxlength -= 1;
dest[j++] = c & 0x7f;
Patches currently in stable-queue which might be from jandryuk@xxxxxxxxx are
queue-3.14/lib-ucs2_string-correct-ucs2-utf8-conversion.patch
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