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X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR11MB4669 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "UBSAN:array-index-out-of-bounds_in_mm/slab.h" on: commit: 5cc815e628b86839f757b37f7d175044493010d4 ("mm, mempool: reimplement kmalloc pool as slab pool") https://git.kernel.org/cgit/linux/kernel/git/vbabka/linux.git slub-reservations in testcase: boot compiler: clang-18 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +----------------------------------------------+------------+------------+ | | a0e111f656 | 5cc815e628 | +----------------------------------------------+------------+------------+ | UBSAN:array-index-out-of-bounds_in_mm/slab.h | 0 | 6 | | BUG:kernel_NULL_pointer_dereference,address | 0 | 6 | | Oops | 0 | 6 | | EIP:do_raw_spin_trylock | 0 | 6 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 6 | +----------------------------------------------+------------+------------+ 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/202406141007.1d556925-lkp@intel.com [ 11.396435][ T1] ------------[ cut here ]------------ [ 11.397649][ T1] UBSAN: array-index-out-of-bounds in mm/slab.h:428:9 [ 11.399568][ T1] index 14 is out of range for type 'struct kmem_cache *[14]' [ 11.401151][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-rc1-00009-g5cc815e628b8 #1 [ 11.403035][ T1] Call Trace: [ 11.403833][ T1] dump_stack_lvl (lib/dump_stack.c:116) [ 11.404927][ T1] ? init_caches (fs/ceph/super.c:964) [ 11.405112][ T1] dump_stack (lib/dump_stack.c:123) [ 11.405112][ T1] __ubsan_handle_out_of_bounds (lib/ubsan.c:232 lib/ubsan.c:429) [ 11.405112][ T1] ? mempool_create_kmalloc_pool (mm/mempool.c:356) [ 11.405112][ T1] ? v4l2_ctrl_get_name (drivers/media/v4l2-core/v4l2-ctrls-defs.c:789) [ 11.405112][ T1] ? init_caches (fs/ceph/super.c:964) [ 11.405112][ T1] mempool_create_kmalloc_pool (mm/slab.h:428) [ 11.405112][ T1] init_caches (fs/ceph/super.c:964) [ 11.405112][ T1] init_ceph (fs/ceph/super.c:1619) [ 11.405112][ T1] do_one_initcall (init/main.c:1267) [ 11.405112][ T1] ? bcachefs_init (fs/ceph/super.c:1618) [ 11.405112][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 11.405112][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:266) [ 11.405112][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 11.405112][ T1] ? _raw_spin_unlock_irqrestore (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 11.405112][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 11.405112][ T1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4421) [ 11.405112][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 11.405112][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:266) [ 11.405112][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 11.405112][ T1] ? __lock_acquire (kernel/locking/lockdep.c:4599) [ 11.405112][ T1] ? prep_new_page (mm/page_alloc.c:1478) [ 11.405112][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 11.405112][ T1] ? __should_fail_alloc_page (mm/fail_page_alloc.c:42) [ 11.405112][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 11.405112][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:266) [ 11.405112][ T1] ? local_clock_noinstr (kernel/sched/clock.c:269 kernel/sched/clock.c:306) [ 11.405112][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 11.405112][ T1] ? ___slab_alloc (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 mm/slub.c:3594) [ 11.405112][ T1] ? __this_cpu_preempt_check (lib/smp_processor_id.c:67) [ 11.405112][ T1] ? next_arg (lib/cmdline.c:273) [ 11.405112][ T1] ? parse_args (kernel/params.c:153) [ 11.405112][ T1] do_initcall_level (init/main.c:1328) [ 11.405112][ T1] ? rest_init (init/main.c:1459) [ 11.405112][ T1] do_initcalls (init/main.c:1342) [ 11.405112][ T1] ? rest_init (init/main.c:1459) [ 11.405112][ T1] do_basic_setup (init/main.c:1365) [ 11.405112][ T1] kernel_init_freeable (init/main.c:1582) [ 11.405112][ T1] kernel_init (init/main.c:1469) [ 11.405112][ T1] ret_from_fork (arch/x86/kernel/process.c:153) [ 11.405112][ T1] ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 11.405112][ T1] entry_INT80_32 (arch/x86/entry/entry_32.S:944) [ 11.450934][ T1] ---[ end trace ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240614/202406141007.1d556925-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki