[kbuild-all] Re: [linux-stable-rc:linux-5.10.y 3189/5262] drivers/usb/dwc2/hcd.c:3835:6: warning: stack frame size of 1032 bytes in function 'dwc2_hcd_dump_state'

On 5/20/21 4:28 AM, Arnd Bergmann wrote: > On Wed, May 19, 2021 at 9:48 PM kernel test robot <lkp(a)intel.com&gt; wrote: >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y >> head: 689e89aee55c565fe90fcdf8a7e53f2f976c5946 >> commit: 5f2f616343b1d62d26f24316fbfc107ecf0983a9 [3189/5262] linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP* >> config: mips-randconfig-r015-20210519 (attached as .config) >> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8e93d10633d751a3e9169bf9fa68326925ffa097) >> reproduce (this is a W=1 build): >> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross >> chmod +x ~/bin/make.cross >> # install mips cross compiling tool for clang build >> # apt-get install binutils-mips-linux-gnu >> # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.gi... >> git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git >> git fetch --no-tags linux-stable-rc linux-5.10.y >> git checkout 5f2f616343b1d62d26f24316fbfc107ecf0983a9 >> # save the attached .config to linux build tree >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips >> >> If you fix the issue, kindly add following tag as appropriate >> Reported-by: kernel test robot <lkp(a)intel.com&gt; >> >> All warnings (new ones prefixed by >>): >> > I analyzed another bug like this today, and I think this is again just > CONFIG_UBSAN_ALIGNMENT=y > on mips/clang causing tons of these warnings. > > I don't think this should be considered a regression, but we may want > to change either the > kernel or the 0day bot from test building this combination of options. > > Arnd > Hi Arnd, We have disabled CONFIG_UBSAN_ALIGNMENT for mips/clang in our kconfigs to avoid reporting such warnings again.