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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, kernel test robot noticed "UBSAN:shift-out-of-bounds_in_mm/slub.c" on: commit: f04d441027621c16081803832a54f59272112cf5 ("[PATCH 4/4] mm/slub: refactor calculate_order() and calc_slab_order()") url: https://github.com/intel-lab-lkp/linux/commits/Vlastimil-Babka/mm-slub-simplify-the-last-resort-slab-order-calculation/20230908-225506 base: git://git.kernel.org/cgit/linux/kernel/git/vbabka/slab.git for-next patch link: https://lore.kernel.org/all/20230908145302.30320-10-vbabka@suse.cz/ patch subject: [PATCH 4/4] mm/slub: refactor calculate_order() and calc_slab_order() in testcase: boot compiler: clang-16 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-------------------------------------------------+------------+------------+ | | a17847b835 | f04d441027 | +-------------------------------------------------+------------+------------+ | UBSAN:shift-out-of-bounds_in_mm/slub.c | 0 | 12 | +-------------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202309111340.f59c3f22-oliver.sang@intel.com [ 0.901457][ T0] UBSAN: shift-out-of-bounds in mm/slub.c:463:34 [ 0.902458][ T0] shift exponent 52 is too large for 32-bit type 'unsigned int' [ 0.903477][ T0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G T 6.5.0-rc1-00009-gf04d44102762 #1 [ 0.904450][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 0.904450][ T0] Call Trace: [ 0.904450][ T0] [ 0.904450][ T0] dump_stack_lvl (lib/dump_stack.c:107) [ 0.904450][ T0] dump_stack (lib/dump_stack.c:114) [ 0.904450][ T0] ubsan_epilogue (lib/ubsan.c:218) [ 0.904450][ T0] __ubsan_handle_shift_out_of_bounds (lib/ubsan.c:?) [ 0.904450][ T0] ? tdx_handle_virt_exception (arch/x86/include/asm/shared/tdx.h:60 arch/x86/coco/tdx/tdx.c:375 arch/x86/coco/tdx/tdx.c:430 arch/x86/coco/tdx/tdx.c:650 arch/x86/coco/tdx/tdx.c:666) [ 0.904450][ T0] ? kmemleak_alloc (mm/kmemleak.c:977) [ 0.904450][ T0] __kmem_cache_create (mm/slub.c:? mm/slub.c:4159 mm/slub.c:4473 mm/slub.c:4507 mm/slub.c:5104) [ 0.904450][ T0] ? kmem_cache_alloc (mm/slub.c:3502) [ 0.904450][ T0] kmem_cache_create_usercopy (mm/slab_common.c:236 mm/slab_common.c:340) [ 0.904450][ T0] fork_init (kernel/fork.c:1048) [ 0.904450][ T0] ? kmem_cache_create (mm/slab_common.c:395) [ 0.904450][ T0] start_kernel (init/main.c:1046) [ 0.904450][ T0] x86_64_start_reservations (??:?) [ 0.904450][ T0] x86_64_start_kernel (arch/x86/kernel/head64.c:486) [ 0.904450][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:441) [ 0.904450][ T0] [ 0.904457][ T0] ================================================================================ [ 0.905560][ T0] LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,integrity [ 0.906497][ T0] landlock: Up and running. The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20230911/202309111340.f59c3f22-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki