tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c2e7554e1b85935d962127efa3c2a76483b0b3b6 commit: 8d58f222e85f01da0c0e1fc1e77986c86de889e2 ubsan: disable UBSAN_ALIGNMENT under COMPILE_TEST date: 7 months ago config: arm64-randconfig-r024-20201119 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 8d58f222e85f01da0c0e1fc1e77986c86de889e2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 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 >>): lib/crypto/curve25519-hacl64.c: In function 'ladder_cmult.constprop': 601 | } | ^ lib/crypto/curve25519-hacl64.c: In function 'curve25519_generic': lib/crypto/curve25519-hacl64.c:788:1: warning: the frame size of 2704 bytes is larger than 2048 bytes [-Wframe-larger-than=] 788 | } | ^ vim +601 lib/crypto/curve25519-hacl64.c 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 589 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 590 static void ladder_cmult(u64 *result, u8 *n1, u64 *q) 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 591 { 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 592 u64 point_buf[40] = { 0 }; 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 593 u64 *nq = point_buf; 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 594 u64 *nqpq = point_buf + 10; 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 595 u64 *nq2 = point_buf + 20; 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 596 u64 *nqpq2 = point_buf + 30; 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 597 point_copy(nqpq, q); 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 598 nq[0] = 1; 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 599 ladder_bigloop_cmult_big_loop(n1, nq, nqpq, nq2, nqpq2, q, 32); 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 600 point_copy(result, nq); 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 @601 } 0ed42a6f431e930 Jason A. Donenfeld 2019-11-08 602 :::::: The code at line 601 was first introduced by commit :::::: 0ed42a6f431e930b2e8fae21955406e09fe75d70 crypto: curve25519 - generic C library implementations :::::: TO: Jason A. Donenfeld <Jason(a)zx2c4.com&gt; :::::: CC: Herbert Xu <herbert(a)gondor.apana.org.au&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org