linux-next: build failure after merge of the drm tree

From: broonie@kernel.org
To: Dave Airlie <airlied@linux.ie>, DRI <dri-devel@lists.freedesktop.org>
Cc: Allen Chen <allen.chen@ite.com.tw>,
	Hsin-yi Wang <hsinyi@chromium.org>,
	Hermes Wu <hermes.wu@ite.com.tw>,
	AngeloGioacchino Del Regno 
	<angelogioacchino.delregno@collabora.com>,
	Robert Foss <robert.foss@linaro.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: linux-next: build failure after merge of the drm tree
Date: Fri, 25 Feb 2022 16:42:31 +0000	[thread overview]
Message-ID: <20220225164231.904173-1-broonie@kernel.org> (raw)

Hi all,

After merging the drm tree, today's linux-next build (x86 allmodconfig)
failed like this:

lib/strncpy_from_user.o: warning: objtool: strncpy_from_user()+0x10b: call to do_strncpy_from_user() with UACCESS enabled
lib/strnlen_user.o: warning: objtool: strnlen_user()+0xbb: call to do_strnlen_user() with UACCESS enabled
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c: In function 'receive_timing_debugfs_show':
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3077:23: error: array subscript 4096 is outside array bounds of 'u8[200]' {aka 'unsigned char[200]'} [-Werror=array-bounds]
 3077 |  u8 *str = read_buf, *end = read_buf + PAGE_SIZE;
      |                       ^~~
/tmp/next/build/drivers/gpu/drm/bridge/ite-it6505.c:3076:5: note: while referencing 'read_buf'
 3076 |  u8 read_buf[READ_BUFFER_SIZE];
      |     ^~~~~~~~
cc1: all warnings being treated as errors

Caused by commit

  b5c84a9edcd418 ("drm/bridge: add it6505 driver")

I have used the drm tree from yesterday instead.