tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/wip head: a76254f60dc69826643c45a19418b3e4c67d68f4 commit: 8e0c3933252fff31aaf97b37f660b1a3107debd2 [6/7] lockdep: Only trace IRQ edges config: i386-randconfig-s001-20200819 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-183-gaa6ede3b-dirty git checkout 8e0c3933252fff31aaf97b37f660b1a3107debd2 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/scsi/qla1280.c:3060:52: sparse: sparse: Using plain integer as NULL pointer drivers/scsi/qla1280.c:2326:16: sparse: sparse: cast to restricted __le16 drivers/scsi/qla1280.c:645:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] isp_parameter @@ got restricted __le16 [usertype] @@ drivers/scsi/qla1280.c:645:27: sparse: expected unsigned short [usertype] isp_parameter drivers/scsi/qla1280.c:645:27: sparse: got restricted __le16 [usertype] drivers/scsi/qla1280.c:646:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] w @@ got restricted __le16 [usertype] @@ drivers/scsi/qla1280.c:646:32: sparse: expected unsigned short [usertype] w drivers/scsi/qla1280.c:646:32: sparse: got restricted __le16 [usertype] drivers/scsi/qla1280.c:648:46: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] selection_timeout @@ got restricted __le16 [usertype] @@ drivers/scsi/qla1280.c:648:46: sparse: expected unsigned short [usertype] selection_timeout drivers/scsi/qla1280.c:648:46: sparse: got restricted __le16 [usertype] drivers/scsi/qla1280.c:649:44: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] max_queue_depth @@ got restricted __le16 [usertype] @@ drivers/scsi/qla1280.c:649:44: sparse: expected unsigned short [usertype] max_queue_depth drivers/scsi/qla1280.c:649:44: sparse: got restricted __le16 [usertype] drivers/scsi/qla1280.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/umh.h, include/linux/kmod.h, ...): include/linux/spinlock.h:404:9: sparse: sparse: context imbalance in 'qla1280_request_firmware' - unexpected unlock -- kernel/sched/wait.c: note: in included file (through include/linux/wait.h, include/linux/pid.h, include/linux/sched.h, kernel/sched/sched.h): -- kernel/locking/rtmutex.c:788:9: sparse: sparse: context imbalance in 'rt_mutex_adjust_prio_chain' - different lock contexts for basic block kernel/locking/rtmutex.c:1190:17: sparse: sparse: context imbalance in '__rt_mutex_slowlock' - unexpected unlock -- -- drivers/base/power/runtime.c: note: in included file (through include/linux/wait.h, include/linux/pid.h, include/linux/sched.h, ...): -- drivers/mfd/ti_am335x_tscadc.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/umh.h, include/linux/kmod.h, ...): # https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue locking/wip git checkout 8e0c3933252fff31aaf97b37f660b1a3107debd2 vim +/_qla1280_wait_for_single_command +404 include/linux/spinlock.h c2f21ce2e31286 Thomas Gleixner 2009-12-02 401 3490565b633c70 Denys Vlasenko 2015-07-13 402 static __always_inline void spin_unlock_irq(spinlock_t *lock) c2f21ce2e31286 Thomas Gleixner 2009-12-02 403 { c2f21ce2e31286 Thomas Gleixner 2009-12-02 @404 raw_spin_unlock_irq(&lock->rlock); c2f21ce2e31286 Thomas Gleixner 2009-12-02 405 } c2f21ce2e31286 Thomas Gleixner 2009-12-02 406 :::::: The code at line 404 was first introduced by commit :::::: c2f21ce2e31286a0a32f8da0a7856e9ca1122ef3 locking: Implement new raw_spinlock :::::: TO: Thomas Gleixner <tglx(a)linutronix.de&gt; :::::: CC: Thomas Gleixner <tglx(a)linutronix.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org