tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y head: ceb6b0b3f45d368cf15b65cb3d690cffaab7bf38 commit: 44d3e9852350e7797096097f47fd3972b94fb657 [7661/9999] USB: ldusb: fix read info leaks config: sparc64-randconfig-r015-20200517 (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 44d3e9852350e7797096097f47fd3972b94fb657 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=7.5.0 make.cross ARCH=sparc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): ipc/built-in.o: In function `mq_attr_ok': ipc/mqueue.c:717: undefined reference to `__multi3' drivers/built-in.o: In function `kmalloc_array': vim +546 include/linux/slab.h ba6c496ed834a3 Glauber Costa 2012-12-18 537 e7efa615ccf783 Michael Opdenacker 2013-06-25 538 /** e7efa615ccf783 Michael Opdenacker 2013-06-25 539 * kmalloc_array - allocate memory for an array. e7efa615ccf783 Michael Opdenacker 2013-06-25 540 * @n: number of elements. e7efa615ccf783 Michael Opdenacker 2013-06-25 541 * @size: element size. e7efa615ccf783 Michael Opdenacker 2013-06-25 542 * @flags: the type of memory to allocate (see kmalloc). 800590f523bf3b Paul Drynoff 2006-06-23 543 */ a8203725dfded5 Xi Wang 2012-03-05 544 static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags) ^1da177e4c3f41 Linus Torvalds 2005-04-16 545 { a3860c1c5dd113 Xi Wang 2012-05-31 @546 if (size != 0 && n > SIZE_MAX / size) 6193a2ff180920 Paul Mundt 2007-07-15 547 return NULL; a8203725dfded5 Xi Wang 2012-03-05 548 return __kmalloc(n * size, flags); a8203725dfded5 Xi Wang 2012-03-05 549 } a8203725dfded5 Xi Wang 2012-03-05 550 :::::: The code at line 546 was first introduced by commit :::::: a3860c1c5dd1137db23d7786d284939c5761d517 introduce SIZE_MAX :::::: TO: Xi Wang <xi.wang(a)gmail.com&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org