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Date: Fri, 7 Jul 2017 12:35:48 +0300 (EEST) From: Meelis Roos <mroos@...ux.ee> To: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> cc: Linux Kernel list <linux-kernel@...r.kernel.org> Subject: namei_vfat.c array subscript is above array bounds I do not know if this is old or new, just noticed it scrolling by while compiling current 4.12+git on 32-bit x86. CC [M] fs/fat/namei_vfat.o In file included from ./arch/x86/include/asm/string.h:2:0, from ./include/linux/string.h:18, from ./include/linux/bitmap.h:8, from ./include/linux/cpumask.h:11, from ./arch/x86/include/asm/cpumask.h:4, from ./arch/x86/include/asm/msr.h:10, from ./arch/x86/include/asm/processor.h:20, from ./arch/x86/include/asm/cpufeature.h:4, from ./arch/x86/include/asm/thread_info.h:52, from ./include/linux/thread_info.h:37, from ./arch/x86/include/asm/preempt.h:6, from ./include/linux/preempt.h:80, from ./include/linux/spinlock.h:50, from ./include/linux/seqlock.h:35, from ./include/linux/time.h:5, from ./include/linux/stat.h:18, from ./include/linux/module.h:10, from fs/fat/namei_vfat.c:18: fs/fat/namei_vfat.c: In function ‘vfat_add_entry’: ./arch/x86/include/asm/string_32.h:74:16: warning: array subscript is above array bounds [-Warray-bounds] *((char *)to + 4) = *((char *)from + 4); ~~~~~~~~~~~~^~~~ ./arch/x86/include/asm/string_32.h:74:16: warning: array subscript is above array bounds [-Warray-bounds] ./arch/x86/include/asm/string_32.h:78:17: warning: array subscript is above array bounds [-Warray-bounds] *((short *)to + 2) = *((short *)from + 2); ~~~~~~~~~~~~~^~~~ ./arch/x86/include/asm/string_32.h:78:17: warning: array subscript is above array bounds [-Warray-bounds] ./arch/x86/include/asm/string_32.h:82:15: warning: array subscript is above array bounds [-Warray-bounds] *((int *)to + 1) = *((int *)from + 1); ~~~~~~~~~~~^~~~ ./arch/x86/include/asm/string_32.h:82:15: warning: array subscript is above array bounds [-Warray-bounds] -- Meelis Roos (mroos@...ux.ee)
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