tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8b83369ddcb3fb9cab5c1088987ce477565bb630 commit: 97ef275077932c65b1b8ec5022abd737a9fbf3e0 powerpc/xive: Fix xmon support on the PowerNV platform config: powerpc64-randconfig-m031-20210226 (attached as .config) compiler: powerpc64-linux-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: arch/powerpc/sysdev/xive/common.c:279 xmon_xive_get_irq_config() warn: variable dereferenced before check 'd' (see line 261) vim +/d +279 arch/powerpc/sysdev/xive/common.c 5896163f7f91c05 Cédric Le Goater 2019-09-10 259 int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d) b4868ff55d082bc Cédric Le Goater 2019-08-14 260 { 97ef275077932c6 Cédric Le Goater 2020-03-06 @261 struct irq_chip *chip = irq_data_get_irq_chip(d); ^ Dereferenced inside function 5896163f7f91c05 Cédric Le Goater 2019-09-10 262 int rc; 5896163f7f91c05 Cédric Le Goater 2019-09-10 263 u32 target; 5896163f7f91c05 Cédric Le Goater 2019-09-10 264 u8 prio; 5896163f7f91c05 Cédric Le Goater 2019-09-10 265 u32 lirq; 5896163f7f91c05 Cédric Le Goater 2019-09-10 266 97ef275077932c6 Cédric Le Goater 2020-03-06 267 if (!is_xive_irq(chip)) 97ef275077932c6 Cédric Le Goater 2020-03-06 268 return -EINVAL; 97ef275077932c6 Cédric Le Goater 2020-03-06 269 5896163f7f91c05 Cédric Le Goater 2019-09-10 270 rc = xive_ops->get_irq_config(hw_irq, &target, &prio, &lirq); 5896163f7f91c05 Cédric Le Goater 2019-09-10 271 if (rc) { 5896163f7f91c05 Cédric Le Goater 2019-09-10 272 xmon_printf("IRQ 0x%08x : no config rc=%d\n", hw_irq, rc); 5896163f7f91c05 Cédric Le Goater 2019-09-10 273 return rc; 5896163f7f91c05 Cédric Le Goater 2019-09-10 274 } 5896163f7f91c05 Cédric Le Goater 2019-09-10 275 5896163f7f91c05 Cédric Le Goater 2019-09-10 276 xmon_printf("IRQ 0x%08x : target=0x%x prio=%02x lirq=0x%x ", 5896163f7f91c05 Cédric Le Goater 2019-09-10 277 hw_irq, target, prio, lirq); 5896163f7f91c05 Cédric Le Goater 2019-09-10 278 5896163f7f91c05 Cédric Le Goater 2019-09-10 @279 if (d) { ^^^^^^ Checked too late 5896163f7f91c05 Cédric Le Goater 2019-09-10 280 struct xive_irq_data *xd = irq_data_get_irq_handler_data(d); 5896163f7f91c05 Cédric Le Goater 2019-09-10 281 u64 val = xive_esb_read(xd, XIVE_ESB_GET); 5896163f7f91c05 Cédric Le Goater 2019-09-10 282 5896163f7f91c05 Cédric Le Goater 2019-09-10 283 xmon_printf("PQ=%c%c", 5896163f7f91c05 Cédric Le Goater 2019-09-10 284 val & XIVE_ESB_VAL_P ? 'P' : '-', 5896163f7f91c05 Cédric Le Goater 2019-09-10 285 val & XIVE_ESB_VAL_Q ? 'Q' : '-'); 5896163f7f91c05 Cédric Le Goater 2019-09-10 286 } 5896163f7f91c05 Cédric Le Goater 2019-09-10 287 5896163f7f91c05 Cédric Le Goater 2019-09-10 288 xmon_printf("\n"); 5896163f7f91c05 Cédric Le Goater 2019-09-10 289 return 0; b4868ff55d082bc Cédric Le Goater 2019-08-14 290 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
