tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3fb6d0e00efc958d01c2f109c8453033a2d96796 commit: 930914b7d528fc6b0249bffc00564100bcf6ef75 powerpc/xive: Add a debugfs file to dump internal XIVE state 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 <l...@intel.com> Reported-by: Dan Carpenter <dan.carpen...@oracle.com> New smatch warnings: arch/powerpc/sysdev/xive/common.c:1614 xive_debug_show_irq() warn: variable dereferenced before check 'd' (see line 1596) Old smatch warnings: arch/powerpc/sysdev/xive/common.c:280 xmon_xive_get_irq_config() warn: variable dereferenced before check 'd' (see line 262) vim +/d +1614 arch/powerpc/sysdev/xive/common.c 930914b7d528fc Cédric Le Goater 2020-03-06 1594 void xive_debug_show_irq(struct seq_file *m, u32 hw_irq, struct irq_data *d) 930914b7d528fc Cédric Le Goater 2020-03-06 1595 { 930914b7d528fc Cédric Le Goater 2020-03-06 @1596 struct irq_chip *chip = irq_data_get_irq_chip(d); ^ Dereferenced inside function 930914b7d528fc Cédric Le Goater 2020-03-06 1597 int rc; 930914b7d528fc Cédric Le Goater 2020-03-06 1598 u32 target; 930914b7d528fc Cédric Le Goater 2020-03-06 1599 u8 prio; 930914b7d528fc Cédric Le Goater 2020-03-06 1600 u32 lirq; 930914b7d528fc Cédric Le Goater 2020-03-06 1601 930914b7d528fc Cédric Le Goater 2020-03-06 1602 if (!is_xive_irq(chip)) 930914b7d528fc Cédric Le Goater 2020-03-06 1603 return; 930914b7d528fc Cédric Le Goater 2020-03-06 1604 930914b7d528fc Cédric Le Goater 2020-03-06 1605 rc = xive_ops->get_irq_config(hw_irq, &target, &prio, &lirq); 930914b7d528fc Cédric Le Goater 2020-03-06 1606 if (rc) { 930914b7d528fc Cédric Le Goater 2020-03-06 1607 seq_printf(m, "IRQ 0x%08x : no config rc=%d\n", hw_irq, rc); 930914b7d528fc Cédric Le Goater 2020-03-06 1608 return; 930914b7d528fc Cédric Le Goater 2020-03-06 1609 } 930914b7d528fc Cédric Le Goater 2020-03-06 1610 930914b7d528fc Cédric Le Goater 2020-03-06 1611 seq_printf(m, "IRQ 0x%08x : target=0x%x prio=%02x lirq=0x%x ", 930914b7d528fc Cédric Le Goater 2020-03-06 1612 hw_irq, target, prio, lirq); 930914b7d528fc Cédric Le Goater 2020-03-06 1613 930914b7d528fc Cédric Le Goater 2020-03-06 @1614 if (d) { ^^^^^^^^ Checked too late. 930914b7d528fc Cédric Le Goater 2020-03-06 1615 struct xive_irq_data *xd = irq_data_get_irq_handler_data(d); 930914b7d528fc Cédric Le Goater 2020-03-06 1616 u64 val = xive_esb_read(xd, XIVE_ESB_GET); 930914b7d528fc Cédric Le Goater 2020-03-06 1617 930914b7d528fc Cédric Le Goater 2020-03-06 1618 seq_printf(m, "flags=%c%c%c PQ=%c%c", 930914b7d528fc Cédric Le Goater 2020-03-06 1619 xd->flags & XIVE_IRQ_FLAG_STORE_EOI ? 'S' : ' ', 930914b7d528fc Cédric Le Goater 2020-03-06 1620 xd->flags & XIVE_IRQ_FLAG_LSI ? 'L' : ' ', 930914b7d528fc Cédric Le Goater 2020-03-06 1621 xd->flags & XIVE_IRQ_FLAG_H_INT_ESB ? 'H' : ' ', 930914b7d528fc Cédric Le Goater 2020-03-06 1622 val & XIVE_ESB_VAL_P ? 'P' : '-', 930914b7d528fc Cédric Le Goater 2020-03-06 1623 val & XIVE_ESB_VAL_Q ? 'Q' : '-'); 930914b7d528fc Cédric Le Goater 2020-03-06 1624 } 930914b7d528fc Cédric Le Goater 2020-03-06 1625 seq_puts(m, "\n"); 930914b7d528fc Cédric Le Goater 2020-03-06 1626 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip