tree: https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/chromeos.git chromeos-5.4__release/core54-58 head: d902f3439a0584cd838618b3b5ba473e5e2f1c14 commit: 6f9cff84dde800b4d9eab071810fbe284686601e [3323/9999] blktrace: Protect q->blk_trace with RCU config: arc-randconfig-s031-20200707 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-31-gabbfd661-dirty git checkout 6f9cff84dde800b4d9eab071810fbe284686601e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arc 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 >>) kernel/trace/blktrace.c:348:12: sparse: expected struct blk_trace *bt kernel/trace/blktrace.c:1002:50: sparse: sparse: incorrect type in argument 7 (different base types) @@ expected int error @@ got restricted blk_status_t [usertype] bi_status @@ kernel/trace/blktrace.c:1002:50: sparse: expected int error kernel/trace/blktrace.c:1002:50: sparse: got restricted blk_status_t [usertype] bi_status kernel/trace/blktrace.c:1040:68: sparse: sparse: incorrect type in argument 7 (different base types) @@ expected int error @@ got restricted blk_status_t [usertype] bi_status @@ kernel/trace/blktrace.c:1040:68: sparse: expected int error kernel/trace/blktrace.c:1040:68: sparse: got restricted blk_status_t [usertype] bi_status kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1263:16: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1270:32: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long long [usertype] sector_from @@ got restricted __be64 const [usertype] sector_from @@ kernel/trace/blktrace.c:1270:32: sparse: expected unsigned long long [usertype] sector_from kernel/trace/blktrace.c:1270:32: sparse: got restricted __be64 const [usertype] sector_from kernel/trace/blktrace.c:1272:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be32 [usertype] device_from @@ got unsigned int @@ kernel/trace/blktrace.c:1272:24: sparse: expected restricted __be32 [usertype] device_from kernel/trace/blktrace.c:1272:24: sparse: got unsigned int kernel/trace/blktrace.c:1273:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be32 [usertype] device_to @@ got unsigned int @@ kernel/trace/blktrace.c:1273:24: sparse: expected restricted __be32 [usertype] device_to kernel/trace/blktrace.c:1273:24: sparse: got unsigned int kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:26: sparse: sparse: cast to restricted __be64 kernel/trace/blktrace.c:1274:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] sector_from @@ got unsigned long long @@ kernel/trace/blktrace.c:1274:24: sparse: expected restricted __be64 [usertype] sector_from kernel/trace/blktrace.c:1274:24: sparse: got unsigned long long kernel/trace/blktrace.c:1407:26: sparse: sparse: restricted __be32 degrades to integer kernel/trace/blktrace.c:1407:48: sparse: sparse: restricted __be32 degrades to integer kernel/trace/blktrace.c:1408:27: sparse: sparse: cast from restricted __be64 kernel/trace/blktrace.c:1632:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct blk_trace *bt @@ got struct blk_trace [noderef] <asn:4> *[assigned] old_val @@ kernel/trace/blktrace.c:1632:12: sparse: expected struct blk_trace *bt kernel/trace/blktrace.c:1632:12: sparse: got struct blk_trace [noderef] <asn:4> *[assigned] old_val vim +348 kernel/trace/blktrace.c 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 343 1f2cac107c591c kernel/trace/blktrace.c Jens Axboe 2017-11-05 344 static int __blk_trace_remove(struct request_queue *q) 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 345 { 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 346 struct blk_trace *bt; 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 347 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 @348 bt = xchg(&q->blk_trace, NULL); 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 349 if (!bt) 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 350 return -EINVAL; 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 351 5554720482a631 kernel/trace/blktrace.c Li Zefan 2009-03-25 352 if (bt->trace_state != Blktrace_running) 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 353 blk_trace_cleanup(bt); 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 354 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 355 return 0; 2056a782f8e7e6 block/blktrace.c Jens Axboe 2006-03-23 356 } 1f2cac107c591c kernel/trace/blktrace.c Jens Axboe 2017-11-05 357 :::::: The code at line 348 was first introduced by commit :::::: 2056a782f8e7e65fd4bfd027506b4ce1c5e9ccd4 [PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23 :::::: TO: Jens Axboe <axboe(a)suse.de&gt; :::::: CC: Jens Axboe <axboe(a)suse.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org