tree: https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git rdma-next head: 105e46f6fa14fa139fa861296e47afcb8e169fd0 commit: 4b62881e144d9c89e9c7ff5a6cd9e640e5920971 [62/63] IB/mlx4: Add support for REJ due to timeout config: i386-randconfig-s032-20200723 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-93-g4c6cbe55-dirty git checkout 4b62881e144d9c89e9c7ff5a6cd9e640e5920971 # 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 >>) vim +492 drivers/infiniband/hw/mlx4/cm.c 483 484 static void rej_tmout_tree_cleanup(struct mlx4_ib_sriov *sriov, int slave) 485 { 486 struct radix_tree_iter iter; 487 bool flush_needed = false; 488 void **slot; 489 int cnt = 0; 490 491 mutex_lock(&sriov->rej_tmout_lock); 493 struct rej_tmout_entry *item = *slot; 494 495 if (slave < 0 || slave == item->slave) { 496 mod_delayed_work(system_wq, &item->timeout, 0); 497 flush_needed = true; 498 ++cnt; 499 } 500 } 501 mutex_unlock(&sriov->rej_tmout_lock); 502 503 if (flush_needed) { 504 flush_scheduled_work(); 505 506 pr_debug("%d entries in radix_tree for slave %d during cleanup\n", 507 slave, cnt); 508 } 509 } 510 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org