=====================================================
BUG: KMSAN: uninit-value in __flush_smp_call_function_queue+0x343/0x1810 kernel/smp.c:549
 __flush_smp_call_function_queue+0x343/0x1810 kernel/smp.c:549
 generic_smp_call_function_single_interrupt+0x1c/0x30 kernel/smp.c:477
 __sysvec_call_function_single+0x48/0x350 arch/x86/kernel/smp.c:272
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:267 [inline]
 sysvec_call_function_single+0x7c/0x90 arch/x86/kernel/smp.c:267
 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:1644 [inline]
 sched_core_balance+0x87/0x1f80 kernel/sched/core.c:6418
 do_balance_callbacks kernel/sched/core.c:5018 [inline]
 __balance_callbacks kernel/sched/core.c:5074 [inline]
 finish_lock_switch kernel/sched/core.c:5123 [inline]
 finish_task_switch+0x64a/0xbc0 kernel/sched/core.c:5243
 context_switch kernel/sched/core.c:5391 [inline]
 __schedule+0x2930/0x8750 kernel/sched/core.c:7189
 schedule_idle+0x5a/0x90 kernel/sched/core.c:7309
 do_idle+0x9fa/0xa10 kernel/sched/idle.c:381
 cpu_startup_entry+0x5f/0x80 kernel/sched/idle.c:451
 rest_init+0x1df/0x260 init/main.c:762
 start_kernel+0x6d7/0x8b0 init/main.c:1220
 x86_64_start_reservations+0x28/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x139/0x140 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147

Local variable pinfo created at:
 receive_announce+0x43/0x3d0 sound/core/seq/oss/seq_oss_init.c:119
 __snd_seq_deliver_single_event sound/core/seq/seq_clientmgr.c:599 [inline]
 _snd_seq_deliver_single_event sound/core/seq/seq_clientmgr.c:645 [inline]
 snd_seq_deliver_single_event+0xef9/0x1260 sound/core/seq/seq_clientmgr.c:660

CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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