* [linyunsheng:net-pp-inflight-fix_v3 3/3] include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow
@ 2024-10-08 12:50 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-10-08 12:50 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp
::::::
:::::: Manual check reason: "low confidence static check first_new_problem: include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow"
::::::
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Yunsheng Lin <linyunsheng@huawei.com>
tree: https://github.com/gestionlin/linux.git net-pp-inflight-fix_v3
head: bd72d37cdf0449e8175e573706b55a1b5186287a
commit: bd72d37cdf0449e8175e573706b55a1b5186287a [3/3] page_pool: fix IOMMU crash when driver has already unbound
:::::: branch date: 24 hours ago
:::::: commit date: 24 hours ago
config: x86_64-randconfig-121-20241008 (https://download.01.org/0day-ci/archive/20241008/202410082056.oGrW6vdm-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241008/202410082056.oGrW6vdm-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/r/202410082056.oGrW6vdm-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
net/core/page_pool.c: note: in included file (through include/linux/atomic.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow
>> include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow
vim +846 include/linux/atomic/atomic-arch-fallback.h
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 825
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 826 /**
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 827 * raw_atomic_sub_return_release() - atomic subtract with release ordering
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 828 * @i: int value to subtract
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 829 * @v: pointer to atomic_t
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 830 *
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 831 * Atomically updates @v to (@v - @i) with release ordering.
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 832 *
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 833 * Safe to use in noinstr code; prefer atomic_sub_return_release() elsewhere.
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 834 *
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 835 * Return: The updated value of @v.
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 836 */
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 837 static __always_inline int
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 838 raw_atomic_sub_return_release(int i, atomic_t *v)
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 839 {
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 840 #if defined(arch_atomic_sub_return_release)
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 841 return arch_atomic_sub_return_release(i, v);
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 842 #elif defined(arch_atomic_sub_return_relaxed)
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 843 __atomic_release_fence();
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 844 return arch_atomic_sub_return_relaxed(i, v);
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 845 #elif defined(arch_atomic_sub_return)
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 @846 return arch_atomic_sub_return(i, v);
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 847 #else
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 848 #error "Unable to define raw_atomic_sub_return_release"
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 849 #endif
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 850 }
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 851
:::::: The code at line 846 was first introduced by commit
:::::: 1d78814d41701c216e28fcf2656526146dec4a1a locking/atomic: scripts: simplify raw_atomic*() definitions
:::::: TO: Mark Rutland <mark.rutland@arm.com>
:::::: CC: Peter Zijlstra <peterz@infradead.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* [linyunsheng:net-pp-inflight-fix_v3 3/3] include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow
@ 2024-10-16 9:14 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-10-16 9:14 UTC (permalink / raw)
To: Yunsheng Lin; +Cc: oe-kbuild-all
tree: https://github.com/gestionlin/linux.git net-pp-inflight-fix_v3
head: bd72d37cdf0449e8175e573706b55a1b5186287a
commit: bd72d37cdf0449e8175e573706b55a1b5186287a [3/3] page_pool: fix IOMMU crash when driver has already unbound
:::::: branch date: 24 hours ago
:::::: commit date: 24 hours ago
config: x86_64-randconfig-121-20241008 (https://download.01.org/0day-ci/archive/20241008/202410082056.oGrW6vdm-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241008/202410082056.oGrW6vdm-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/r/202410082056.oGrW6vdm-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
net/core/page_pool.c: note: in included file (through include/linux/atomic.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow
>> include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow
vim +846 include/linux/atomic/atomic-arch-fallback.h
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 825
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 826 /**
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 827 * raw_atomic_sub_return_release() - atomic subtract with release ordering
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 828 * @i: int value to subtract
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 829 * @v: pointer to atomic_t
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 830 *
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 831 * Atomically updates @v to (@v - @i) with release ordering.
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 832 *
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 833 * Safe to use in noinstr code; prefer atomic_sub_return_release() elsewhere.
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 834 *
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 835 * Return: The updated value of @v.
ad8110706f3811 include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 836 */
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 837 static __always_inline int
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 838 raw_atomic_sub_return_release(int i, atomic_t *v)
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 839 {
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 840 #if defined(arch_atomic_sub_return_release)
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 841 return arch_atomic_sub_return_release(i, v);
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 842 #elif defined(arch_atomic_sub_return_relaxed)
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 843 __atomic_release_fence();
37f8173dd84936 include/linux/atomic-arch-fallback.h Peter Zijlstra 2020-01-24 844 return arch_atomic_sub_return_relaxed(i, v);
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 845 #elif defined(arch_atomic_sub_return)
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 @846 return arch_atomic_sub_return(i, v);
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 847 #else
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 848 #error "Unable to define raw_atomic_sub_return_release"
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 849 #endif
1d78814d41701c include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 850 }
9257959a6e5b4f include/linux/atomic/atomic-arch-fallback.h Mark Rutland 2023-06-05 851
:::::: The code at line 846 was first introduced by commit
:::::: 1d78814d41701c216e28fcf2656526146dec4a1a locking/atomic: scripts: simplify raw_atomic*() definitions
:::::: TO: Mark Rutland <mark.rutland@arm.com>
:::::: CC: Peter Zijlstra <peterz@infradead.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2024-10-16 9:14 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-10-08 12:50 [linyunsheng:net-pp-inflight-fix_v3 3/3] include/linux/atomic/atomic-arch-fallback.h:846:16: sparse: sparse: constant integer operation overflow kernel test robot
-- strict thread matches above, loose matches on Subject: below --
2024-10-16 9:14 kernel test robot
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.