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BUG: KMSAN: uninit-value in __flush_smp_call_function_queue+0x362/0x18e0 kernel/smp.c:535
 __flush_smp_call_function_queue+0x362/0x18e0 kernel/smp.c:535
 generic_smp_call_function_single_interrupt+0x1c/0x30 kernel/smp.c:463
 __sysvec_call_function_single+0x4b/0x3e0 arch/x86/kernel/smp.c:271
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
 sysvec_call_function_single+0x7c/0x90 arch/x86/kernel/smp.c:266
 asm_sysvec_call_function_single+0x1f/0x30 arch/x86/include/asm/idtentry.h:704
 native_irq_enable arch/x86/include/asm/irqflags.h:42 [inline]
 arch_local_irq_enable arch/x86/include/asm/irqflags.h:119 [inline]
 raw_spin_rq_unlock_irq kernel/sched/sched.h:1632 [inline]
 sched_core_balance+0x87/0x2010 kernel/sched/core.c:6328
 do_balance_callbacks kernel/sched/core.c:4929 [inline]
 __balance_callbacks kernel/sched/core.c:4985 [inline]
 finish_lock_switch kernel/sched/core.c:5034 [inline]
 finish_task_switch+0x3e4/0x8b0 kernel/sched/core.c:5153
 context_switch kernel/sched/core.c:5301 [inline]
 __schedule+0x2607/0x8640 kernel/sched/core.c:6911
 schedule_idle+0x5a/0x90 kernel/sched/core.c:7034
 do_idle+0x9fa/0xa10 kernel/sched/idle.c:381
 cpu_startup_entry+0x5f/0x80 kernel/sched/idle.c:451
 start_secondary+0xcc/0xd0 arch/x86/kernel/smpboot.c:312
 common_startup_64+0x13e/0x147

Local variable mmap_event created at:
 perf_event_mmap+0x47/0x2fe0 kernel/events/core.c:9891
 __mmap_complete mm/vma.c:2585 [inline]
 __mmap_region mm/vma.c:2768 [inline]
 mmap_region+0x5030/0x62b0 mm/vma.c:2844

CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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