tree: https://github.com/l1k/linux pciehp_deadlock head: 340a50fd68cdc5c65e74e25482b39e9429f9b8fa commit: 340a50fd68cdc5c65e74e25482b39e9429f9b8fa [1/1] PCI: pciehp: Fix AB-BA deadlock between reset_lock and device_lock config: x86_64-allyesconfig (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 3504acc33e8b9ddd7de71d75cdc329a14dbf58d9) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 340a50fd68cdc5c65e74e25482b39e9429f9b8fa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): lockdep_assert_held_write(hotplug->pci_slot->reset_lock); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/lockdep.h:295:27: note: expanded from macro 'lockdep_assert_held_write' WARN_ON(debug_locks && !lockdep_is_held_type(l, 0)); \ ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/lockdep.h:268:64: note: expanded from macro 'lockdep_is_held_type' #define lockdep_is_held_type(lock, r) lock_is_held_type(&(lock)->dep_map, (r)) ^ include/asm-generic/bug.h:118:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ lockdep_assert_held_write(hotplug->pci_slot->reset_lock); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/lockdep.h:295:27: note: expanded from macro 'lockdep_assert_held_write' WARN_ON(debug_locks && !lockdep_is_held_type(l, 0)); \ ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/lockdep.h:268:57: note: expanded from macro 'lockdep_is_held_type' #define lockdep_is_held_type(lock, r) lock_is_held_type(&(lock)->dep_map, (r)) ^ include/asm-generic/bug.h:118:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ 2 errors generated. vim +4905 drivers/pci/pci.c 4897 4898 static int pci_reset_hotplug_slot(struct hotplug_slot *hotplug, int probe) 4899 { 4900 int rc = -ENOTTY; 4901 4902 if (!hotplug || !try_module_get(hotplug->owner)) 4903 return rc; 4904 4906 4907 if (hotplug->ops->reset_slot) 4908 rc = hotplug->ops->reset_slot(hotplug, probe); 4909 4910 module_put(hotplug->owner); 4911 4912 return rc; 4913 } 4914 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org