=====================================================
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
 in_irqentry_text kernel/stacktrace.c:379 [inline]
 filter_irq_stacks+0xaa/0x190 kernel/stacktrace.c:397
 stack_depot_save_flags+0x35/0x790 lib/stackdepot.c:667
 stack_depot_save+0x12/0x20 lib/stackdepot.c:747
 __msan_poison_alloca+0x100/0x1a0 mm/kmsan/instrumentation.c:286
 alloc_vmap_area+0x5b/0x2db0 mm/vmalloc.c:2031
 __get_vm_area_node+0x263/0x3b0 mm/vmalloc.c:3226
 __vmalloc_node_range_noprof+0x43c/0x2cd0 mm/vmalloc.c:4024
 __vmalloc_node_noprof mm/vmalloc.c:4124 [inline]
 vzalloc_noprof+0xce/0x140 mm/vmalloc.c:4202
 xt_counters_alloc+0x70/0xa0 net/netfilter/x_tables.c:1474
 __do_replace+0x6b/0x1100 net/ipv6/netfilter/ip6_tables.c:1063
 compat_do_replace net/ipv6/netfilter/ip6_tables.c:1538 [inline]
 do_ip6t_set_ctl+0x1618/0x1d60 net/ipv6/netfilter/ip6_tables.c:1641
 nf_setsockopt+0x4fb/0x550 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x1c3/0x2f0 net/ipv6/ipv6_sockglue.c:970
 tcp_setsockopt+0x157/0x180 net/ipv4/tcp.c:4182
 sock_common_setsockopt+0xf5/0x140 net/core/sock.c:3993
 do_sock_setsockopt net/socket.c:2381 [inline]
 __sys_setsockopt+0x43e/0x580 net/socket.c:2406
 __do_compat_sys_socketcall net/compat.c:491 [inline]
 __se_compat_sys_socketcall net/compat.c:423 [inline]
 __ia32_compat_sys_socketcall+0x441/0x1b70 net/compat.c:423
 ia32_sys_call+0x2c57/0x4360 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x195/0x470 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable cycles.i created at:
 clockevent_set_next_coupled kernel/time/clockevents.c:309 [inline]
 clockevents_program_event+0x178/0x830 kernel/time/clockevents.c:360
 tick_program_event+0xfb/0x190 kernel/time/tick-oneshot.c:48

CPU: 0 UID: 0 PID: 5921 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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