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-randconfig-s022-20200719 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-49-g707c5017-dirty git checkout 340a50fd68cdc5c65e74e25482b39e9429f9b8fa # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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 >>): In file included from arch/x86/include/asm/bug.h:92, from include/linux/bug.h:5, from include/linux/debug_locks.h:7, from include/linux/lockdep.h:24, from include/linux/mutex.h:17, from include/linux/kernfs.h:12, from include/linux/sysfs.h:16, from include/linux/kobject.h:20, from include/linux/of.h:17, from include/linux/irqdomain.h:35, from include/linux/acpi.h:13, from drivers/pci/pci.c:11: drivers/pci/pci.c: In function 'pci_reset_hotplug_slot': 268 | #define lockdep_is_held_type(lock, r) lock_is_held_type(&(lock)->dep_map, (r)) | ^~ include/asm-generic/bug.h:118:25: note: in definition of macro 'WARN_ON' 118 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/lockdep.h:295:27: note: in expansion of macro 'lockdep_is_held_type' 295 | WARN_ON(debug_locks && !lockdep_is_held_type(l, 0)); \ | ^~~~~~~~~~~~~~~~~~~~ drivers/pci/pci.c:4905:2: note: in expansion of macro 'lockdep_assert_held_write' 4905 | lockdep_assert_held_write(hotplug->pci_slot->reset_lock); | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +268 include/linux/lockdep.h f607c668577481 Peter Zijlstra 2009-07-20 266 f8319483f57f1c Peter Zijlstra 2016-11-30 267 #define lockdep_is_held(lock) lock_is_held(&(lock)->dep_map) f8319483f57f1c Peter Zijlstra 2016-11-30 @268 #define lockdep_is_held_type(lock, r) lock_is_held_type(&(lock)->dep_map, (r)) f607c668577481 Peter Zijlstra 2009-07-20 269 :::::: The code at line 268 was first introduced by commit :::::: f8319483f57f1ca22370f4150bb990aca7728a67 locking/lockdep: Provide a type check for lock_is_held :::::: TO: Peter Zijlstra <peterz(a)infradead.org&gt; :::::: CC: Dave Chinner <david(a)fromorbit.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org