tree: https://github.com/awilliam/linux-vfio.git next head: f54e0bcf65bf7d2015e1aa1c6353e5feb71c3654 commit: f54e0bcf65bf7d2015e1aa1c6353e5feb71c3654 [15/15] vfio: Include No-IOMMU mode coccinelle warnings: (new ones prefixed by >>) >> drivers/vfio/vfio.c:1002:32-35: ERROR: driver is NULL but dereferenced. vim +1002 drivers/vfio/vfio.c 0b43c082 Alex Williamson 2013-04-29 986 down_read(&container->group_lock); 0b43c082 Alex Williamson 2013-04-29 987 0b43c082 Alex Williamson 2013-04-29 988 driver = container->iommu_driver; 0b43c082 Alex Williamson 2013-04-29 989 cba3345c Alex Williamson 2012-07-31 990 switch (arg) { cba3345c Alex Williamson 2012-07-31 991 /* No base extensions yet */ cba3345c Alex Williamson 2012-07-31 992 default: cba3345c Alex Williamson 2012-07-31 993 /* cba3345c Alex Williamson 2012-07-31 994 * If no driver is set, poll all registered drivers for cba3345c Alex Williamson 2012-07-31 995 * extensions and return the first positive result. If cba3345c Alex Williamson 2012-07-31 996 * a driver is already set, further queries will be passed cba3345c Alex Williamson 2012-07-31 997 * only to that driver. cba3345c Alex Williamson 2012-07-31 998 */ cba3345c Alex Williamson 2012-07-31 999 if (!driver) { cba3345c Alex Williamson 2012-07-31 1000 mutex_lock(&vfio.iommu_drivers_lock); f54e0bcf Alex Williamson 2015-10-15 1001 vfio_for_each_iommu_driver(container, driver) { cba3345c Alex Williamson 2012-07-31 @1002 if (!try_module_get(driver->ops->owner)) cba3345c Alex Williamson 2012-07-31 1003 continue; cba3345c Alex Williamson 2012-07-31 1004 cba3345c Alex Williamson 2012-07-31 1005 ret = driver->ops->ioctl(NULL, cba3345c Alex Williamson 2012-07-31 1006 VFIO_CHECK_EXTENSION, cba3345c Alex Williamson 2012-07-31 1007 arg); cba3345c Alex Williamson 2012-07-31 1008 module_put(driver->ops->owner); cba3345c Alex Williamson 2012-07-31 1009 if (ret > 0) cba3345c Alex Williamson 2012-07-31 1010 break; :::::: The code at line 1002 was first introduced by commit :::::: cba3345cc494ad286ca8823f44b2c16cae496679 vfio: VFIO core :::::: TO: Alex Williamson <alex.williamson@xxxxxxxxxx> :::::: CC: Alex Williamson <alex.williamson@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
