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[ 17.752032][ T1] The code is fine but needs lockdep annotation, or maybe [ 17.752032][ T1] you didn't initialize this object before use? [ 17.752032][ T1] turning off the locking correctness validator. [ 17.752032][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.2.0-rc4-00086-gf4806cc63cc6 #1 PREEMPT(full) [ 17.752032][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.752032][ T1] Call Trace: [ 17.752032][ T1] [ 17.752032][ T1] dump_stack_lvl (dump_stack.c:94 dump_stack.c:120) [ 17.752032][ T1] register_lock_class (locking/lockdep.c:1332) [ 17.752032][ T1] ? __lock_release+0x53/0x10d [ 17.752032][ T1] ? mtree_alloc_range (linux/spinlock.h:342 maple_tree.c:5800) [ 17.752032][ T1] __lock_acquire (locking/lockdep.c:5112) [ 17.752032][ T1] ? mtree_alloc_range (linux/spinlock.h:342 maple_tree.c:5800) [ 17.752032][ T1] lock_acquire (trace/events/lock.h:23 locking/lockdep.c:5831) [ 17.752032][ T1] ? mtree_alloc_range (linux/spinlock.h:342 maple_tree.c:5800) [ 17.752032][ T1] ? lock_acquire (trace/events/lock.h:23 locking/lockdep.c:5831) [ 17.752032][ T1] _raw_spin_lock (linux/spinlock_api_smp.h:158 locking/spinlock.c:158) [ 17.752032][ T1] ? mtree_alloc_range (linux/spinlock.h:342 maple_tree.c:5800) [ 17.752032][ T1] mtree_alloc_range (linux/spinlock.h:342 maple_tree.c:5800) [ 17.752032][ T1] ? mtree_insert (maple_tree.c:5783) [ 17.752032][ T1] ? kvm_clock_read (x86/kernel/kvmclock.c:80) [ 17.752032][ T1] benchmark_maple_tree (region_alloc_benchmark.c:136) [ 17.752032][ T1] ? benchmark_bitmap (region_alloc_benchmark.c:58 (discriminator 3)) [ 17.752032][ T1] ? _printk (printk/printk.c:2504) [ 17.752032][ T1] ? benchmark_bitmap (region_alloc_benchmark.c:54 (discriminator 3)) [ 17.752032][ T1] region_alloc_benchmark (region_alloc_benchmark.c:197) [ 17.752032][ T1] ? bfq_init (bfq-iosched.c:7649) [ 17.752032][ T1] ? benchmark_ida (region_alloc_benchmark.c:124) [ 17.752032][ T1] do_one_initcall (main.c:1347) [ 17.752032][ T1] ? rcu_lock_acquire (linux/rcupdate.h:960) [ 17.752032][ T1] ? __kmalloc_noprof (slub.c:5363 slub.c:5387) [ 17.752032][ T1] ? do_initcalls (linux/slab.h:973 linux/slab.h:1290 main.c:1418) [ 17.752032][ T1] do_initcalls (main.c:1409 main.c:1425) [ 17.752032][ T1] kernel_init_freeable (main.c:1445 main.c:1658) [ 17.752032][ T1] ? rest_init (main.c:717) [ 17.752032][ T1] kernel_init (main.c:1548) [ 17.752032][ T1] ret_from_fork (x86/kernel/process.c:158) [ 17.752032][ T1] ? arch_exit_to_user_mode_prepare+0x74/0x74 [ 17.752032][ T1] ? rest_init (main.c:717) [ 17.752032][ T1] ret_from_fork_asm (x86/entry/entry_64.S:245) [ 17.752032][ T1] [ 24.013548][ T1] Maple 3779202887 2484049644 60575 1000000 1550928 [ 24.990890][ T1] IDA 575247255 396825927 60575 1000000 134928 [ 25.327943][ T1] Bitmap 8349201 80133 6156 100000 12504 [ 25.366002][ T29] Freeing initrd memory: 118776K [ 25.842057][ T1] Maple 293091941 215862643 6156 100000 157776 [ 25.941163][ T1] IDA 59238562 34683461 6156 100000 14352 [ 25.989651][ T1] Bitmap 109541 8255 612 10000 1256 [ 26.030185][ T1] Maple 19150121 16184256 612 10000 15952 [ 26.042611][ T1] IDA 4157285 3069915 612 10000 1936 [ 26.054183][ T1] Bitmap 7207 1471 55 1000 128 [ 26.066923][ T1] Maple 1873335 1797272 55 1000 1616 [ 26.075720][ T1] IDA 680707 581315 55 1000 208 [ 26.082353][ T1] Bitmap 2691 523 22 100 16 [ 26.087980][ T1] Maple 177500 187648 22 100 848 [ 26.093213][ T1] IDA 62046 36889 22 100 208 [ 26.098353][ T1] Bitmap 1028 314 10 10 8 [ 26.103600][ T1] Maple 49537 47114 10 10 336 [ 26.108703][ T1] IDA 6863 4643 10 10 80 [ 26.113754][ T1] Region allocation benchmark complete The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260812/202608121556.f0a5b5ad-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki