* [PATCH 1/2] block: Use struct_size() helper in kmalloc()
@ 2026-03-06 8:00 luoqing
2026-03-06 15:52 ` kernel test robot
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: luoqing @ 2026-03-06 8:00 UTC (permalink / raw)
To: axboe; +Cc: linux-block, linux-kernel
From: luoqing <luoqing@kylinos.cn>
Make use of the struct_size() helper instead of an open-coded version,
in order to avoid any potential type mistakes or integer overflows that,
in the worst scenario, could lead to heap overflows.
Signed-off-by: luoqing <luoqing@kylinos.cn>
---
block/bio.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index d80d5d26804e..397fc3bc0ede 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -657,8 +657,7 @@ struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask)
if (nr_vecs > BIO_MAX_INLINE_VECS)
return NULL;
- return kmalloc(sizeof(*bio) + nr_vecs * sizeof(struct bio_vec),
- gfp_mask);
+ return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
}
EXPORT_SYMBOL(bio_kmalloc);
--
2.25.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH 1/2] block: Use struct_size() helper in kmalloc()
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
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2026-03-06 15:52 UTC (permalink / raw)
To: luoqing, axboe; +Cc: oe-kbuild-all, linux-block, linux-kernel
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 next-20260305]
[cannot apply to linus/master v6.16-rc1]
[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: x86_64-rhel-9.4-ltp (https://download.01.org/0day-ci/archive/20260306/202603061605.8Q7r4bnr-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260306/202603061605.8Q7r4bnr-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/202603061605.8Q7r4bnr-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/percpu.h:5,
from arch/x86/include/asm/msr.h:16,
from arch/x86/include/asm/tsc.h:11,
from arch/x86/include/asm/timex.h:6,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/jiffies.h:10,
from include/linux/ktime.h:25,
from include/linux/timer.h:6,
from include/linux/uprobes.h:18,
from include/linux/mm_types.h:16,
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);
| ^~~~~~~~~~~
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: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/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/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: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: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: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: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: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);
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
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 1/2] block: Use struct_size() helper in kmalloc()
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
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2026-03-06 16:02 UTC (permalink / raw)
To: luoqing, axboe; +Cc: llvm, oe-kbuild-all, linux-block, linux-kernel
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-20260305]
[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: x86_64-kexec (https://download.01.org/0day-ci/archive/20260306/202603061636.1njuAoiZ-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260306/202603061636.1njuAoiZ-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/202603061636.1njuAoiZ-lkp@intel.com/
All errors (new ones prefixed by >>):
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:26: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:436:18: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:36: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:32: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:436:18: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:42: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:26: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:437:26: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:36: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:32: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:437:26: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:42: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:26: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:255:10: note: expanded from macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:255:10: note: expanded from macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:255:10: note: expanded from macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
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
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 1/2] block: Use struct_size() helper in kmalloc()
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
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2026-03-06 18:34 UTC (permalink / raw)
To: luoqing, axboe; +Cc: llvm, oe-kbuild-all, linux-block, linux-kernel
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: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20260307/202603070226.gVmbTzRU-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260307/202603070226.gVmbTzRU-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/202603070226.gVmbTzRU-lkp@intel.com/
All errors (new ones prefixed by >>):
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:26: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:436:18: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:36: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:32: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:436:18: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:421:42: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:26: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:437:26: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:420:36: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:32: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:437:45: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:63: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
>> block/bio.c:660:17: error: static assertion failed due to requirement '!(!(!__builtin_types_compatible_p(struct bio_vec *, struct bio_vec *)))': must be array
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/overflow.h:437:26: note: expanded from macro 'struct_size'
437 | size_add(sizeof(*(p)), flex_array_size(p, member, count)))
| ^
include/linux/overflow.h:421:42: note: expanded from macro 'flex_array_size'
421 | size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
| ^
include/linux/compiler.h:208:28: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
include/linux/alloc_tag.h:251:9: note: expanded from macro 'alloc_hooks_tag'
251 | typeof(_do_alloc) _res; \
| ^~~~~~~~~
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:26: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:255:10: note: expanded from macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:255:10: note: expanded from macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
block/bio.c:660:34: error: no member named 'bio_vec' in 'struct bio'; did you mean 'bi_io_vec'?
660 | return kmalloc(struct_size(bio, bio_vec, nr_vecs), gfp_mask);
| ^~~~~~~
| bi_io_vec
include/linux/overflow.h:436:37: note: expanded from macro 'struct_size'
436 | sizeof(*(p)) + flex_array_size(p, member, count), \
| ^
include/linux/overflow.h:420:57: note: expanded from macro 'flex_array_size'
420 | (count) * sizeof(*(p)->member) + __must_be_array((p)->member), \
| ^
include/linux/compiler.h:208:64: note: expanded from macro '__must_be_array'
208 | #define __must_be_array(a) __BUILD_BUG_ON_ZERO_MSG(!__is_array(a), \
| ^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/slab.h:956:52: note: expanded from macro 'kmalloc'
956 | #define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
| ^
include/linux/alloc_tag.h:265:31: note: expanded from macro 'alloc_hooks'
265 | alloc_hooks_tag(&_alloc_tag, _do_alloc); \
| ^
include/linux/alloc_tag.h:255:10: note: expanded from macro 'alloc_hooks_tag'
255 | _res = _do_alloc; \
| ^
include/linux/blk_types.h:236:19: note: 'bi_io_vec' declared here
236 | struct bio_vec *bi_io_vec;
| ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
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
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 1/2] block: Use struct_size() helper in kmalloc()
2026-03-06 8:00 [PATCH 1/2] block: Use struct_size() helper in kmalloc() luoqing
` (2 preceding siblings ...)
2026-03-06 18:34 ` kernel test robot
@ 2026-03-06 19:07 ` kernel test robot
3 siblings, 0 replies; 5+ messages in thread
From: kernel test robot @ 2026-03-06 19:07 UTC (permalink / raw)
To: luoqing, axboe; +Cc: oe-kbuild-all, linux-block, linux-kernel
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
--
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https://github.com/intel/lkp-tests/wiki
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