Hi Peng, First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f4d51dffc6c01a9e94650d95ce0104964f8ae822 commit: d82bcef5157de1368c08244a846ab968b3e5cb7e soc: imx: select ARM_GIC_V3 for i.MX8M config: arm-randconfig-m031-20200908 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> smatch warnings: drivers/irqchip/irq-gic-v3-mbi.c:306 mbi_init() warn: impossible condition '(mbi_phys_base == (-1)) => (0-u32max == u64max)' # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d82bcef5157de1368c08244a846ab968b3e5cb7e git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d82bcef5157de1368c08244a846ab968b3e5cb7e vim +306 drivers/irqchip/irq-gic-v3-mbi.c 505287525c24d5 Marc Zyngier 2018-05-08 263 int __init mbi_init(struct fwnode_handle *fwnode, struct irq_domain *parent) 505287525c24d5 Marc Zyngier 2018-05-08 264 { 505287525c24d5 Marc Zyngier 2018-05-08 265 struct device_node *np; 505287525c24d5 Marc Zyngier 2018-05-08 266 const __be32 *reg; 505287525c24d5 Marc Zyngier 2018-05-08 267 int ret, n; 505287525c24d5 Marc Zyngier 2018-05-08 268 505287525c24d5 Marc Zyngier 2018-05-08 269 np = to_of_node(fwnode); 505287525c24d5 Marc Zyngier 2018-05-08 270 505287525c24d5 Marc Zyngier 2018-05-08 271 if (!of_property_read_bool(np, "msi-controller")) 505287525c24d5 Marc Zyngier 2018-05-08 272 return 0; 505287525c24d5 Marc Zyngier 2018-05-08 273 505287525c24d5 Marc Zyngier 2018-05-08 274 n = of_property_count_elems_of_size(np, "mbi-ranges", sizeof(u32)); 505287525c24d5 Marc Zyngier 2018-05-08 275 if (n <= 0 || n % 2) 505287525c24d5 Marc Zyngier 2018-05-08 276 return -EINVAL; 505287525c24d5 Marc Zyngier 2018-05-08 277 505287525c24d5 Marc Zyngier 2018-05-08 278 mbi_range_nr = n / 2; 505287525c24d5 Marc Zyngier 2018-05-08 279 mbi_ranges = kcalloc(mbi_range_nr, sizeof(*mbi_ranges), GFP_KERNEL); 505287525c24d5 Marc Zyngier 2018-05-08 280 if (!mbi_ranges) 505287525c24d5 Marc Zyngier 2018-05-08 281 return -ENOMEM; 505287525c24d5 Marc Zyngier 2018-05-08 282 505287525c24d5 Marc Zyngier 2018-05-08 283 for (n = 0; n < mbi_range_nr; n++) { 505287525c24d5 Marc Zyngier 2018-05-08 284 ret = of_property_read_u32_index(np, "mbi-ranges", n * 2, 505287525c24d5 Marc Zyngier 2018-05-08 285 &mbi_ranges[n].spi_start); 505287525c24d5 Marc Zyngier 2018-05-08 286 if (ret) 505287525c24d5 Marc Zyngier 2018-05-08 287 goto err_free_mbi; 505287525c24d5 Marc Zyngier 2018-05-08 288 ret = of_property_read_u32_index(np, "mbi-ranges", n * 2 + 1, 505287525c24d5 Marc Zyngier 2018-05-08 289 &mbi_ranges[n].nr_spis); 505287525c24d5 Marc Zyngier 2018-05-08 290 if (ret) 505287525c24d5 Marc Zyngier 2018-05-08 291 goto err_free_mbi; 505287525c24d5 Marc Zyngier 2018-05-08 292 505287525c24d5 Marc Zyngier 2018-05-08 293 mbi_ranges[n].bm = kcalloc(BITS_TO_LONGS(mbi_ranges[n].nr_spis), 505287525c24d5 Marc Zyngier 2018-05-08 294 sizeof(long), GFP_KERNEL); 505287525c24d5 Marc Zyngier 2018-05-08 295 if (!mbi_ranges[n].bm) { 505287525c24d5 Marc Zyngier 2018-05-08 296 ret = -ENOMEM; 505287525c24d5 Marc Zyngier 2018-05-08 297 goto err_free_mbi; 505287525c24d5 Marc Zyngier 2018-05-08 298 } 505287525c24d5 Marc Zyngier 2018-05-08 299 pr_info("MBI range [%d:%d]\n", mbi_ranges[n].spi_start, 505287525c24d5 Marc Zyngier 2018-05-08 300 mbi_ranges[n].spi_start + mbi_ranges[n].nr_spis - 1); 505287525c24d5 Marc Zyngier 2018-05-08 301 } 505287525c24d5 Marc Zyngier 2018-05-08 302 505287525c24d5 Marc Zyngier 2018-05-08 303 reg = of_get_property(np, "mbi-alias", NULL); 505287525c24d5 Marc Zyngier 2018-05-08 304 if (reg) { 505287525c24d5 Marc Zyngier 2018-05-08 305 mbi_phys_base = of_translate_address(np, reg); 505287525c24d5 Marc Zyngier 2018-05-08 @306 if (mbi_phys_base == OF_BAD_ADDR) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Impossible condition. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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