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[ 1.226642][ T1] The code is fine but needs lockdep annotation, or maybe [ 1.227181][ T1] you didn't initialize this object before use? [ 1.227181][ T1] turning off the locking correctness validator. [ 1.227181][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 6.19.0-rc3-00001-gd87e70902c77 #1 VOLUNTARY 7c12528289a79a90bef93a94128a85da378fc562 [ 1.227181][ T1] Tainted: [T]=RANDSTRUCT [ 1.227181][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 1.227181][ T1] Call Trace: [ 1.227181][ T1] ? dump_stack_lvl (lib/dump_stack.c:122) [ 1.227181][ T1] ? dump_stack (lib/dump_stack.c:130) [ 1.227181][ T1] ? register_lock_class (kernel/locking/lockdep.c:985 kernel/locking/lockdep.c:1299) [ 1.227181][ T1] ? sched_clock_noinstr (arch/x86/kernel/tsc.c:273) [ 1.227181][ T1] ? damon_start (mm/damon/core.c:1372) [ 1.227181][ T1] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91 (discriminator 2)) [ 1.227181][ T1] ? __lock_acquire (kernel/locking/lockdep.c:5113) [ 1.227181][ T1] ? lock_acquire (kernel/locking/lockdep.c:470 (discriminator 4) kernel/locking/lockdep.c:5870 (discriminator 4)) [ 1.227181][ T1] ? damon_call (mm/damon/core.c:1460) [ 1.227181][ T1] ? damon_start (mm/damon/core.c:1372) [ 1.227181][ T1] ? __mutex_unlock_slowpath (arch/x86/include/asm/atomic.h:23 include/linux/atomic/atomic-arch-fallback.h:457 include/linux/atomic/atomic-long.h:40 include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:947) [ 1.227181][ T1] ? hrtimer_nanosleep_restart (kernel/time/sleep_timeout.c:62) [ 1.227181][ T1] ? _raw_spin_lock (include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 1.227181][ T1] ? damon_call (mm/damon/core.c:1460) [ 1.227181][ T1] ? damon_stat_start (mm/damon/stat.c:219) [ 1.227181][ T1] ? damon_reclaim_init (mm/damon/stat.c:258) [ 1.227181][ T1] ? damon_stat_init (mm/damon/stat.c:271) [ 1.227181][ T1] ? do_one_initcall (init/main.c:1378) [ 1.227181][ T1] ? do_initcalls (init/main.c:1439 (discriminator 3) init/main.c:1456 (discriminator 3)) [ 1.227181][ T1] ? kernel_init_freeable (init/main.c:1692) [ 1.227181][ T1] ? rest_init (init/main.c:1570) [ 1.227181][ T1] ? kernel_init (init/main.c:1580) [ 1.227181][ T1] ? ret_from_fork (arch/x86/kernel/process.c:164) [ 1.227181][ T1] ? rest_init (init/main.c:1570) [ 1.227181][ T1] ? ret_from_fork_asm (arch/x86/entry/entry_32.S:737) [ 1.227181][ T1] ? entry_INT80_32 (arch/x86/entry/entry_32.S:945) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260106/202601061219.9effe621-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki