From: kernel test robot <lkp@intel.com>
To: Eric Dumazet <edumazet@google.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
Jakub Kicinski <kuba@kernel.org>,
Brian Vazquez <brianvv@google.com>
Subject: net/core/dev.c:10290:18: sparse: sparse: cast removes address space '__percpu' of expression
Date: Tue, 19 Dec 2023 21:29:54 +0800 [thread overview]
Message-ID: <202312192120.8ogDR8Em-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2cf4f94d8e8646803f8fb0facf134b0cd7fb691a
commit: 625788b5844511cf4c30cffa7fa0bc3a69cebc82 net: add per-cpu storage and net->core_stats
date: 1 year, 9 months ago
config: riscv-buildonly-randconfig-r006-20230429 (https://download.01.org/0day-ci/archive/20231219/202312192120.8ogDR8Em-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231219/202312192120.8ogDR8Em-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/202312192120.8ogDR8Em-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
net/core/dev.c:3254:23: sparse: sparse: incorrect type in argument 4 (different base types) @@ expected restricted __wsum [usertype] csum @@ got unsigned int @@
net/core/dev.c:3254:23: sparse: expected restricted __wsum [usertype] csum
net/core/dev.c:3254:23: sparse: got unsigned int
net/core/dev.c:3254:23: sparse: sparse: cast from restricted __wsum
>> net/core/dev.c:10290:18: sparse: sparse: cast removes address space '__percpu' of expression
net/core/dev.c:3759:17: sparse: sparse: context imbalance in '__dev_queue_xmit' - different lock contexts for basic block
net/core/dev.c:4961:17: sparse: sparse: context imbalance in 'net_tx_action' - different lock contexts for basic block
vim +/__percpu +10290 net/core/dev.c
10282
10283 struct net_device_core_stats *netdev_core_stats_alloc(struct net_device *dev)
10284 {
10285 struct net_device_core_stats __percpu *p;
10286
10287 p = alloc_percpu_gfp(struct net_device_core_stats,
10288 GFP_ATOMIC | __GFP_NOWARN);
10289
10290 if (p && cmpxchg(&dev->core_stats, NULL, p))
10291 free_percpu(p);
10292
10293 /* This READ_ONCE() pairs with the cmpxchg() above */
10294 p = READ_ONCE(dev->core_stats);
10295 if (!p)
10296 return NULL;
10297
10298 return this_cpu_ptr(p);
10299 }
10300 EXPORT_SYMBOL(netdev_core_stats_alloc);
10301
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2023-12-19 13:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 13:29 kernel test robot [this message]
[not found] <202203281436.hsNgYWWu-lkp@intel.com>
2022-03-28 17:17 ` net/core/dev.c:10290:18: sparse: sparse: cast removes address space '__percpu' of expression Jakub Kicinski
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