=====================================================
BUG: KMSAN: uninit-value in profile_hit include/linux/profile.h:58 [inline]
BUG: KMSAN: uninit-value in profile_tick+0x1dd/0x1e0 kernel/profile.c:339
 profile_hit include/linux/profile.h:58 [inline]
 profile_tick+0x1dd/0x1e0 kernel/profile.c:339
 tick_sched_handle kernel/time/tick-sched.c:244 [inline]
 tick_sched_timer+0x5ea/0x700 kernel/time/tick-sched.c:1480
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x583/0x1140 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x4f8/0x1eb0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 __sysvec_apic_timer_interrupt+0x14f/0x5b0 arch/x86/kernel/apic/apic.c:1113
 sysvec_apic_timer_interrupt+0x99/0xc0 arch/x86/kernel/apic/apic.c:1107
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:645
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x33/0x50 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
 do_notify_parent_cldstop+0x7c4/0x860 kernel/signal.c:2191
 ptrace_stop+0x671/0xd40 kernel/signal.c:2294
 ptrace_do_notify kernel/signal.c:2345 [inline]
 ptrace_notify+0x240/0x330 kernel/signal.c:2357
 ptrace_report_syscall include/linux/ptrace.h:411 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
 syscall_exit_work kernel/entry/common.c:251 [inline]
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:278 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0xa5/0x140 kernel/entry/common.c:296
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Local variable ewq created at:
 userfaultfd_unmap_complete+0x4d/0x4f0 fs/userfaultfd.c:862
 vm_mmap_pgoff+0x275/0x480 mm/util.c:545

CPU: 1 PID: 5015 Comm: syz-executor391 Not tainted 6.3.0-rc3-syzkaller-g90ea0df61c98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
=====================================================