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Hi Chengfeng, kernel test robot noticed the following build warnings: [auto build test WARNING on net/main] [also build test WARNING on linus/master horms-ipvs/master v7. 2-rc7] [cannot apply to net-next/main next-20260812] [If your patch is</div>
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</head><body><pre style="font-family: sans-serif; font-size: 100%; white-space: pre-wrap; word-wrap: break-word">Hi Chengfeng,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net/main]
[also build test WARNING on linus/master horms-ipvs/master v7.2-rc7]
[cannot apply to net-next/main next-20260812]
[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/Chengfeng-Ye/rds-synchronize-info-callbacks-with-connection-teardown/20260812-225931
base: net/main
patch link: https://lore.kernel.org/r/20260720184955.3008978-1-nicoyip.dev%40gmail.com
patch subject: [PATCH] rds: synchronize info callbacks with connection teardown
config: mips-randconfig-r134-20260813 (https://download.01.org/0day-ci/archive/20260814/202608140151.MOvRf1jc-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 11.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260814/202608140151.MOvRf1jc-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/202608140151.MOvRf1jc-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> net/rds/info.c:83:9: sparse: sparse: cast removes address space '__rcu' of expression
>> net/rds/info.c:83:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
net/rds/info.c:83:9: sparse: void ( [noderef] __rcu * )( ... )
net/rds/info.c:83:9: sparse: void ( * )( ... )
net/rds/info.c:84:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
net/rds/info.c:84:9: sparse: void ( [noderef] __rcu * )( ... )
net/rds/info.c:84:9: sparse: void ( * )( ... )
net/rds/info.c:96:9: sparse: sparse: cast removes address space '__rcu' of expression
net/rds/info.c:96:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
net/rds/info.c:96:9: sparse: void ( [noderef] __rcu * )( ... )
net/rds/info.c:96:9: sparse: void ( * )( ... )
net/rds/info.c:97:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
net/rds/info.c:97:9: sparse: void ( [noderef] __rcu * )( ... )
net/rds/info.c:97:9: sparse: void ( * )( ... )
net/rds/info.c:222:16: sparse: sparse: cast removes address space '__rcu' of expression
net/rds/info.c:222:16: sparse: sparse: incompatible types in comparison expression (different address spaces):
net/rds/info.c:222:16: sparse: void ( [noderef] __rcu * )( ... )
net/rds/info.c:222:16: sparse: void ( * )( ... )
vim +/__rcu +83 net/rds/info.c
75
76 void rds_info_register_func(int optname, rds_info_func func)
77 {
78 int offset = optname - RDS_INFO_FIRST;
79
80 BUG_ON(optname < RDS_INFO_FIRST || optname > RDS_INFO_LAST);
81
82 spin_lock(&rds_info_lock);
> 83 BUG_ON(rcu_access_pointer(rds_info_funcs[offset]));
84 rcu_assign_pointer(rds_info_funcs[offset], func);
85 spin_unlock(&rds_info_lock);
86 }
87 EXPORT_SYMBOL_GPL(rds_info_register_func);
88
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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