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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/202401302219.db90a6d5-oliver.sang@intel.com [ 42.894536][ T1] ------------[ cut here ]------------ [ 42.895474][ T1] UBSAN: signed-integer-overflow in lib/test_memcat_p.c:47:10 [ 42.897128][ T1] 6570 * 725861 cannot be represented in type 'int' [ 42.898391][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc1-00007-g660787b56e6e #1 [ 42.899962][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 42.901661][ T1] Call Trace: [ 42.902009][ T1] dump_stack_lvl (??:?) [ 42.902009][ T1] dump_stack (??:?) [ 42.902009][ T1] handle_overflow (ubsan.c:?) [ 42.902009][ T1] ? kmemleak_alloc (??:?) [ 42.902009][ T1] ? kmalloc_trace (??:?) [ 42.902009][ T1] ? test_memcat_p_init (test_memcat_p.c:?) [ 42.902009][ T1] __ubsan_handle_mul_overflow (??:?) [ 42.902009][ T1] test_memcat_p_init (test_memcat_p.c:?) [ 42.902009][ T1] ? trace_hardirqs_on (??:?) [ 42.902009][ T1] ? _raw_spin_unlock_irqrestore (??:?) [ 42.902009][ T1] ? test_string_helpers_init (test_memcat_p.c:?) [ 42.902009][ T1] do_one_initcall (??:?) [ 42.902009][ T1] ? parameq (??:?) [ 42.902009][ T1] ? parse_args (??:?) [ 42.902009][ T1] do_initcalls (main.c:?) [ 42.902009][ T1] ? rdinit_setup (main.c:?) [ 42.902009][ T1] kernel_init_freeable (main.c:?) [ 42.902009][ T1] ? rest_init (main.c:?) [ 42.902009][ T1] kernel_init (main.c:?) [ 42.902009][ T1] ? schedule_tail (??:?) [ 42.902009][ T1] ret_from_fork (??:?) [ 42.902009][ T1] ? rest_init (main.c:?) [ 42.902009][ T1] ret_from_fork_asm (??:?) [ 42.902009][ T1] entry_INT80_32 (??:?) [ 42.924183][ T1] ---[ end trace ]--- [ 42.925743][ T1] test_memcat_p: test passed The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240130/202401302219.db90a6d5-oliver.sang@intel.com --- ea804316c9db5148d2bb0c1f40f70d7a83404638/.config 2024-01-26 22:09:35.046768122 +0800 +++ 660787b56e6e97ddc34c7882cbe1228f4040ef74/.config 2024-01-26 19:53:20.693434428 +0800 @@ -6706,6 +6706,7 @@ CONFIG_UBSAN_BOUNDS_STRICT=y CONFIG_UBSAN_SHIFT=y # CONFIG_UBSAN_DIV_ZERO is not set CONFIG_UBSAN_UNREACHABLE=y +CONFIG_UBSAN_SIGNED_WRAP=y # CONFIG_UBSAN_BOOL is not set # CONFIG_UBSAN_ENUM is not set # CONFIG_UBSAN_ALIGNMENT is not set