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

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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.



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