On Thu, Aug 15, 2019 at 02:54:32PM +0200, Thomas Gleixner wrote: > On Thu, 15 Aug 2019, Greg KH wrote: > > On Tue, Aug 13, 2019 at 06:15:51PM +0200, Paul Menzel wrote: > > > Dear Linux folks, > > > > > > > > > No idea, if you are interested in these reports. Building Linux 5.3-rc4, > > > GCC 9.2.0 shows the warning below. > > > > > > ``` > > > In file included from arch/x86/kernel/head64.c:35: > > > In function ‘sanitize_boot_params’, > > > inlined from ‘copy_bootdata’ at arch/x86/kernel/head64.c:391:2: > > > ./arch/x86/include/asm/bootparam_utils.h:40:3: warning: ‘memset’ offset > > > [197, 448] from the object at ‘boot_params’ is out of the bounds of > > > referenced subobject ‘ext_ramdisk_image’ with type > > > ‘unsigned int’ at offset 192 [-Warray-bounds] > > > 40 | memset(&boot_params->ext_ramdisk_image, 0, > > > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > 41 | (char *)&boot_params->efi_info - > > > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > 42 | (char *)&boot_params->ext_ramdisk_image); > > > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > ./arch/x86/include/asm/bootparam_utils.h:43:3: warning: ‘memset’ offset > > > [493, 497] from the object at ‘boot_params’ is out of the bounds of > > > referenced subobject ‘kbd_status’ with type ‘unsig > > > ned char’ at offset 491 [-Warray-bounds] > > > 43 | memset(&boot_params->kbd_status, 0, > > > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > 44 | (char *)&boot_params->hdr - > > > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > 45 | (char *)&boot_params->kbd_status); > > > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > ``` > > > > Yeah, it shows up on my builds as well :( > > > > Any chance you can make a fix for this? > > https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=x86/boot&id=a156cadef2fe445ac423670eace517b39a01ccd0 > > I guess I need to reprioritize that and mark it for stable....
Please do, it's the only build warning I currently have for 'allmodconfig' on x86 for 4.14.y, 4.19.y, and 5.2.y and is annoying :) thanks, greg k-h
