Hi Jiang, [auto build test WARNING on tty/tty-testing] [also build test WARNING on v4.5-rc7 next-20160309] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Jiang-Lu/serial_core-recognize-invalid-pointer-from-userspace/20160309-160641 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing config: i386-randconfig-x000-201610 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers/tty/serial/serial_core.c: In function 'uart_set_info': >> drivers/tty/serial/serial_core.c:750:26: warning: cast to pointer from >> integer of different size [-Wint-to-pointer-cast] new_info->iomem_base = (unsigned char *)uport->mapbase; ^ vim +750 drivers/tty/serial/serial_core.c 734 new_info->irq = irq_canonicalize(new_info->irq); 735 close_delay = msecs_to_jiffies(new_info->close_delay * 10); 736 closing_wait = new_info->closing_wait == ASYNC_CLOSING_WAIT_NONE ? 737 ASYNC_CLOSING_WAIT_NONE : 738 msecs_to_jiffies(new_info->closing_wait * 10); 739 740 741 change_irq = !(uport->flags & UPF_FIXED_PORT) 742 && new_info->irq != uport->irq; 743 744 /* 745 * Since changing the 'type' of the port changes its resource 746 * allocations, we should treat type changes the same as 747 * IO port changes. 748 */ 749 if ((unsigned long)new_info->iomem_base == 0xffffffff) > 750 new_info->iomem_base = (unsigned char *)uport->mapbase; 751 752 change_port = !(uport->flags & UPF_FIXED_PORT) 753 && (new_port != uport->iobase || 754 (unsigned long)new_info->iomem_base != uport->mapbase || 755 new_info->hub6 != uport->hub6 || 756 new_info->io_type != uport->iotype || 757 new_info->iomem_reg_shift != uport->regshift || 758 new_info->type != uport->type); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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