Hi Christian, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 commit: b276527539188f1f61c082ebef27803db93e536d staging: most: move core files out of the staging area date: 10 weeks ago config: mips-randconfig-m031-20200601 (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <l...@intel.com> Reported-by: Dan Carpenter <dan.carpen...@oracle.com> smatch warnings: drivers/most/core.c:1287 most_register_interface() error: we previously assumed 'iface' could be null (see line 1285) # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b276527539188f1f61c082ebef27803db93e536d git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git remote update linus git checkout b276527539188f1f61c082ebef27803db93e536d vim +/iface +1287 drivers/most/core.c 4d5f022f3a664e drivers/staging/most/core.c Christian Gromm 2017-11-21 1279 int most_register_interface(struct most_interface *iface) 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1280 { 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1281 unsigned int i; 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1282 int id; fcb7fad82e23f6 drivers/staging/most/core.c Christian Gromm 2017-11-21 1283 struct most_channel *c; 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1284 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 @1285 if (!iface || !iface->enqueue || !iface->configure || ^^^^^^ Check for NULL. 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1286 !iface->poison_channel || (iface->num_channels > MAX_CHANNELS)) { 6a82c775812944 drivers/staging/most/core.c Christian Gromm 2020-01-23 @1287 dev_err(iface->dev, "Bad interface or channel overflow\n"); ^^^^^^^^^^ Dereference. "iface" can't be NULL. Just delete the check. 4d5f022f3a664e drivers/staging/most/core.c Christian Gromm 2017-11-21 1288 return -EINVAL; 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1289 } 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1290 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1291 id = ida_simple_get(&mdev_id, 0, 0, GFP_KERNEL); 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1292 if (id < 0) { b7935e52dd9869 drivers/staging/most/core.c Christian Gromm 2020-01-23 1293 dev_err(iface->dev, "Failed to allocate device ID\n"); 4d5f022f3a664e drivers/staging/most/core.c Christian Gromm 2017-11-21 1294 return id; 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1295 } 57562a72414ca3 drivers/staging/most/mostcore/core.c Christian Gromm 2015-07-24 1296 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
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