From: kernel test robot <lkp@intel.com>
To: luoqing <l1138897701@163.com>, axboe@kernel.dk
Cc: oe-kbuild-all@lists.linux.dev, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] block: Use struct_size() helper in kmalloc()
Date: Sat, 7 Mar 2026 03:07:54 +0800 [thread overview]
Message-ID: <202603070229.0LteZRkh-lkp@intel.com> (raw)
In-Reply-To: <20260306080056.1262324-1-l1138897701@163.com>
Hi luoqing,
kernel test robot noticed the following build errors:
[auto build test ERROR on axboe/for-next]
[also build test ERROR on device-mapper-dm/for-next linus/master v7.0-rc2 next-20260306]
[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/luoqing/dm-bufio-Use-struct_size-helper-in-kmalloc/20260306-165625
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git for-next
patch link: https://lore.kernel.org/r/20260306080056.1262324-1-l1138897701%40163.com
patch subject: [PATCH 1/2] block: Use struct_size() helper in kmalloc()
config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20260307/202603070229.0LteZRkh-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260307/202603070229.0LteZRkh-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603070229.0LteZRkh-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/workqueue.h:9,
from include/linux/mm_types.h:19,
from include/linux/mmzone.h:22,
from include/linux/gfp.h:7,
from include/linux/mm.h:8,
from block/bio.c:5:
block/bio.c: In function 'bio_kmalloc':
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> include/linux/compiler.h:203:82: error: expression in static assertion is not an integer
203 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> include/linux/compiler.h:203:82: error: expression in static assertion is not an integer
203 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> include/linux/compiler.h:203:82: error: expression in static assertion is not an integer
203 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> include/linux/compiler.h:203:82: error: expression in static assertion is not an integer
203 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
include/linux/alloc_tag.h:251:16: note: in definition of macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:437:40: note: in expansion of macro 'flex_array_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
>> include/linux/compiler.h:203:82: error: expression in static assertion is not an integer
203 | #define __BUILD_BUG_ON_ZERO_MSG(e, msg, ...) ((int)sizeof(struct {_Static_assert(!(e), msg);}))
| ^
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:420:50: note: in expansion of macro '__must_be_array'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~~~~~
block/bio.c:660:41: error: 'struct bio' has no member named 'bio_vec'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/alloc_tag.h:255:24: note: in definition of macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^~~~~~~~~
include/linux/slab.h:956:49: note: in expansion of macro 'alloc_hooks'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^~~~~~~~~~~
block/bio.c:660:16: note: in expansion of macro 'kmalloc'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
include/linux/compiler.h:208:33: note: in expansion of macro '__BUILD_BUG_ON_ZERO_MSG'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:207:35: note: in expansion of macro '__same_type'
207 | #define __is_array(a) (!__same_type((a), &(a)[0]))
| ^~~~~~~~~~~
include/linux/compiler.h:208:58: note: in expansion of macro '__is_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^~~~~~~~~~
include/linux/overflow.h:421:56: note: in expansion of macro '__must_be_array'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^~~~~~~~~~~~~~~
include/linux/overflow.h:436:32: note: in expansion of macro 'flex_array_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^~~~~~~~~~~~~~~
block/bio.c:660:24: note: in expansion of macro 'struct_size'
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
vim +660 block/bio.c
637
638 /**
639 * bio_kmalloc - kmalloc a bio
640 * @nr_vecs: number of bio_vecs to allocate
641 * @gfp_mask: the GFP_* mask given to the slab allocator
642 *
643 * Use kmalloc to allocate a bio (including bvecs). The bio must be initialized
644 * using bio_init() before use. To free a bio returned from this function use
645 * kfree() after calling bio_uninit(). A bio returned from this function can
646 * be reused by calling bio_uninit() before calling bio_init() again.
647 *
648 * Note that unlike bio_alloc() or bio_alloc_bioset() allocations from this
649 * function are not backed by a mempool can fail. Do not use this function
650 * for allocations in the file system I/O path.
651 *
652 * Returns: Pointer to new bio on success, NULL on failure.
653 */
654 struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask)
655 {
656 struct bio *bio;
657
658 if (nr_vecs > BIO_MAX_INLINE_VECS)
659 return NULL;
> 660 return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
661 }
662 EXPORT_SYMBOL(bio_kmalloc);
663
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
prev parent reply other threads:[~2026-03-06 19:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-06 8:00 [PATCH 1/2] block: Use struct_size() helper in kmalloc() luoqing
2026-03-06 15:52 ` kernel test robot
2026-03-06 16:02 ` kernel test robot
2026-03-06 18:34 ` kernel test robot
2026-03-06 19:07 ` kernel test robot [this message]
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