=====================================================
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]
 finish_lock_switch kernel/sched/core.c:5035 [inline]
 finish_task_switch+0x11b/0x8b0 kernel/sched/core.c:5153
 context_switch kernel/sched/core.c:5301 [inline]
 __schedule+0x2607/0x8640 kernel/sched/core.c:6911
 preempt_schedule_irq+0x50/0xa0 kernel/sched/core.c:7238
 raw_irqentry_exit_cond_resched+0x5d/0x80 kernel/entry/common.c:196
 irqentry_exit+0x8f/0x6c0 kernel/entry/common.c:239
 sysvec_reschedule_ipi+0x74/0x80 arch/x86/kernel/smp.c:248
 asm_sysvec_reschedule_ipi+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
 hrtimer_start_range_ns+0xcd/0x3be0 kernel/time/hrtimer.c:-1
 hrtimer_start_expires include/linux/hrtimer.h:258 [inline]
 hrtimer_sleeper_start_expires+0x73/0xc0 kernel/time/hrtimer.c:2047
 futex_do_wait kernel/futex/waitwake.c:345 [inline]
 __futex_wait+0x137/0x450 kernel/futex/waitwake.c:687
 futex_wait+0xd5/0x360 kernel/futex/waitwake.c:715
 do_futex+0x3a4/0x480 kernel/futex/syscalls.c:130
 __do_sys_futex kernel/futex/syscalls.c:207 [inline]
 __se_sys_futex+0x5b8/0x740 kernel/futex/syscalls.c:188
 __x64_sys_futex+0x114/0x1a0 kernel/futex/syscalls.c:188
 x64_sys_call+0x2c48/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:203
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable iter created at:
 tdp_mmu_zap_leafs+0x52/0x6e0 arch/x86/kvm/mmu/tdp_mmu.c:983
 kvm_tdp_mmu_unmap_gfn_range+0x910/0xb50 arch/x86/kvm/mmu/tdp_mmu.c:1362

CPU: 0 UID: 0 PID: 11780 Comm: syz.4.1734 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
=====================================================