Re: [PATCH v2 19/19] ext4: add first unit test for ext4_mb_new_blocks_simple in mballoc

kernel test robot
2023-04-12T18:17:49Z

Hi Kemeng,

kernel test robot noticed the following build errors:

[auto build test ERROR on tytso-ext4/dev]
[also build test ERROR on next-20230412]
[cannot apply to linus/master v6.3-rc6]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Kemeng-Shi/ext4-fix-wrong-unit-use-in-ext4_mb_normalize_request/20230412-172757
base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
patch link: https://lore.kernel.org/r/20230412172833.2317696-20-shikemeng%40huaweicloud.com
patch subject: [PATCH v2 19/19] ext4: add first unit test for ext4_mb_new_blocks_simple in mballoc
config: hexagon-randconfig-r013-20230410 (https://download.01.org/0day-ci/archive/20230413/202304130218.GUkZVdgG-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 2c57868e2e877f73c339796c3374ae660bb77f0d)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/3ceb1daf83fdf578c28ede1a10e55f05ef7642d5
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Kemeng-Shi/ext4-fix-wrong-unit-use-in-ext4_mb_normalize_request/20230412-172757
git checkout 3ceb1daf83fdf578c28ede1a10e55f05ef7642d5
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash fs/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304130218.GUkZVdgG-lkp@intel.com/

All errors (new ones prefixed by >>):

In file included from fs/ext4/mballoc.c:12:
In file included from fs/ext4/ext4_jbd2.h:16:
In file included from include/linux/jbd2.h:23:
In file included from include/linux/buffer_head.h:12:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from fs/ext4/mballoc.c:12:
In file included from fs/ext4/ext4_jbd2.h:16:
In file included from include/linux/jbd2.h:23:
In file included from include/linux/buffer_head.h:12:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from fs/ext4/mballoc.c:12:
In file included from fs/ext4/ext4_jbd2.h:16:
In file included from include/linux/jbd2.h:23:
In file included from include/linux/buffer_head.h:12:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
fs/ext4/mballoc.c:3752:12: warning: mixing declarations and code is incompatible with standards before C99 [-Wdeclaration-after-statement]
handle_t *handle = mc->handle;
^
In file included from fs/ext4/mballoc.c:6523:
>> fs/ext4/mballoc-test.c:107:31: error: casting from randomized structure pointer type 'struct super_block *' to 'struct mb_ctx *'
struct mb_grp_ctx *grp_ctx = MB_GRP_CTX(sb, group);
^
fs/ext4/mballoc-test.c:23:33: note: expanded from macro 'MB_GRP_CTX'
#define MB_GRP_CTX(sb, group) (&MB_CTX(sb)->grp_ctx[group])
^
fs/ext4/mballoc-test.c:22:21: note: expanded from macro 'MB_CTX'
#define MB_CTX(sb) ((struct mb_ctx *)((struct super_block *)sb + 1))
^
fs/ext4/mballoc-test.c:115:23: error: casting from randomized structure pointer type 'struct super_block *' to 'struct mb_ctx *'
struct mb_ctx *ctx = MB_CTX(sb);
^
fs/ext4/mballoc-test.c:22:21: note: expanded from macro 'MB_CTX'
#define MB_CTX(sb) ((struct mb_ctx *)((struct super_block *)sb + 1))
^
fs/ext4/mballoc-test.c:144:23: error: casting from randomized structure pointer type 'struct super_block *' to 'struct mb_ctx *'
struct mb_ctx *ctx = MB_CTX(sb);
^
fs/ext4/mballoc-test.c:22:21: note: expanded from macro 'MB_CTX'
#define MB_CTX(sb) ((struct mb_ctx *)((struct super_block *)sb + 1))
^
fs/ext4/mballoc-test.c:156:31: error: casting from randomized structure pointer type 'struct super_block *' to 'struct mb_ctx *'
struct mb_grp_ctx *grp_ctx = MB_GRP_CTX(sb, block_group);
^
fs/ext4/mballoc-test.c:23:33: note: expanded from macro 'MB_GRP_CTX'
#define MB_GRP_CTX(sb, group) (&MB_CTX(sb)->grp_ctx[group])
^
fs/ext4/mballoc-test.c:22:21: note: expanded from macro 'MB_CTX'
#define MB_CTX(sb) ((struct mb_ctx *)((struct super_block *)sb + 1))
^
fs/ext4/mballoc-test.c:153:1: warning: no previous prototype for function 'ext4_read_block_bitmap_nowait_stub' [-Wmissing-prototypes]
ext4_read_block_bitmap_nowait_stub(struct super_block *sb, ext4_group_t block_group,
^
fs/ext4/mballoc-test.c:152:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
struct buffer_head *
^
static
fs/ext4/mballoc-test.c:162:5: warning: no previous prototype for function 'ext4_wait_block_bitmap_stub' [-Wmissing-prototypes]
int ext4_wait_block_bitmap_stub(struct super_block *sb,
^
fs/ext4/mballoc-test.c:162:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int ext4_wait_block_bitmap_stub(struct super_block *sb,
^
static
fs/ext4/mballoc-test.c:173:31: error: casting from randomized structure pointer type 'struct super_block *' to 'struct mb_ctx *'
struct mb_grp_ctx *grp_ctx = MB_GRP_CTX(sb, block_group);
^
fs/ext4/mballoc-test.c:23:33: note: expanded from macro 'MB_GRP_CTX'
#define MB_GRP_CTX(sb, group) (&MB_CTX(sb)->grp_ctx[group])
^
fs/ext4/mballoc-test.c:22:21: note: expanded from macro 'MB_CTX'
#define MB_CTX(sb) ((struct mb_ctx *)((struct super_block *)sb + 1))
^
fs/ext4/mballoc-test.c:169:25: warning: no previous prototype for function 'ext4_get_group_desc_stub' [-Wmissing-prototypes]
struct ext4_group_desc *ext4_get_group_desc_stub(struct super_block *sb,
^
fs/ext4/mballoc-test.c:169:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
struct ext4_group_desc *ext4_get_group_desc_stub(struct super_block *sb,
^
static
fs/ext4/mballoc-test.c:185:31: error: casting from randomized structure pointer type 'struct super_block *' to 'struct mb_ctx *'
struct mb_grp_ctx *grp_ctx = MB_GRP_CTX(mc->sb, group);
^
fs/ext4/mballoc-test.c:23:33: note: expanded from macro 'MB_GRP_CTX'
#define MB_GRP_CTX(sb, group) (&MB_CTX(sb)->grp_ctx[group])
^
fs/ext4/mballoc-test.c:22:21: note: expanded from macro 'MB_CTX'
#define MB_CTX(sb) ((struct mb_ctx *)((struct super_block *)sb + 1))
^
fs/ext4/mballoc-test.c:181:5: warning: no previous prototype for function 'ext4_mb_mark_group_bb_stub' [-Wmissing-prototypes]
int ext4_mb_mark_group_bb_stub(struct ext4_mark_context *mc,
^
fs/ext4/mballoc-test.c:181:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int ext4_mb_mark_group_bb_stub(struct ext4_mark_context *mc,
^
static
11 warnings and 6 errors generated.

vim +107 fs/ext4/mballoc-test.c

103
104 static void mb_ctx_mark_used(struct super_block *sb, ext4_group_t group,
105 unsigned int start, unsigned int len)
106 {
> 107 struct mb_grp_ctx *grp_ctx = MB_GRP_CTX(sb, group);
108
109 mb_set_bits(grp_ctx->bitmap_bh.b_data, start, len);
110 }
111

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