=====================================================
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]
 finish_lock_switch kernel/sched/core.c:5125 [inline]
 finish_task_switch+0x37e/0xbc0 kernel/sched/core.c:5243
 context_switch kernel/sched/core.c:5391 [inline]
 __schedule+0x2930/0x8750 kernel/sched/core.c:7189
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0x17c/0x3c0 kernel/sched/core.c:7283
 do_nanosleep+0x12c/0x7d0 kernel/time/hrtimer.c:2293
 hrtimer_nanosleep+0x228/0x480 kernel/time/hrtimer.c:2339
 common_nsleep+0x118/0x160 kernel/time/posix-timers.c:1345
 __do_sys_clock_nanosleep_time32 kernel/time/posix-timers.c:1419 [inline]
 __se_sys_clock_nanosleep_time32 kernel/time/posix-timers.c:1396 [inline]
 __ia32_sys_clock_nanosleep_time32+0x652/0x760 kernel/time/posix-timers.c:1396
 ia32_sys_call+0x3617/0x4360 arch/x86/include/generated/asm/syscalls_32.h:268
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 do_int80_emulation+0x177/0x380 arch/x86/entry/syscall_32.c:172
 asm_int80_emulation+0x1f/0x30 arch/x86/include/asm/idtentry.h:621

Local variable nopunt.sroa.0 created at:
 punt_bios_to_rescuer+0x51/0xe40 block/bio.c:421
 bio_alloc_bioset+0xac0/0x1130 block/bio.c:586

CPU: 0 UID: 0 PID: 5594 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
=====================================================