From: Clemens Ladisch <clemens@ladisch.de>
Date: Fri, 24 Apr 2009 08:11:40 +0000 (+0200)
Subject: nls: utf8_wcstombs: use correct buffer size in error case
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e27ecdd94d81e5bc3d1f68591701db5adb342f0d;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

nls: utf8_wcstombs: use correct buffer size in error case

When utf8_wcstombs encounters a character that cannot be encoded, we
must not decrease the remaining output buffer size because nothing has
been written to the output buffer.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
index 9b0efdad8910..000736d89c95 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -144,7 +144,6 @@ utf8_wcstombs(__u8 *s, const wchar_t *pwcs, int maxlen)
 			size = utf8_wctomb(op, *ip, maxlen);
 			if (size == -1) {
 				/* Ignore character and move on */
-				maxlen--;
 			} else {
 				op += size;
 				maxlen -= size;