Hi "Ahmed, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on tip/locking/core] [also build test WARNING on nf-next/master nf/master tip/timers/core linus/master v5.7-rc6 next-20200519] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Ahmed-S-Darwish/seqlock-Extend-s... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 23b5ae2e8e1326c91b5dfdbb6ebcd5a6820074ae config: x86_64-defconfig (attached as .config) If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: net/core/dev.c:953 netdev_get_name() warn: inconsistent returns 'devnet_rename_sem'. # https://github.com/0day-ci/linux/commit/2354e271ada778bbb935d7b2011369371... git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 2354e271ada778bbb935d7b20113693710905cff vim +/devnet_rename_sem +953 net/core/dev.c 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 935 int netdev_get_name(struct net *net, char *name, int ifindex) 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 936 { 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 937 struct net_device *dev; 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 938 2354e271ada778b Ahmed S. Darwish 2020-05-19 939 down_read(&devnet_rename_sem); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2354e271ada778b Ahmed S. Darwish 2020-05-19 940 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 941 rcu_read_lock(); 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 942 dev = dev_get_by_index_rcu(net, ifindex); 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 943 if (!dev) { 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 944 rcu_read_unlock(); 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 945 return -ENODEV; ^^^^^^^^^^^^^^ We need to drop the new semaphore on error. 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 946 } 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 947 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 948 strcpy(name, dev->name); 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 949 rcu_read_unlock(); 2354e271ada778b Ahmed S. Darwish 2020-05-19 950 2354e271ada778b Ahmed S. Darwish 2020-05-19 951 up_read(&devnet_rename_sem); 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 952 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 @953 return 0; 5dbe7c178d3f0a4 Nicolas Schichan 2013-06-26 954 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org