=====================================================
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
 kmsan_virt_addr_valid arch/x86/include/asm/kmsan.h:-1 [inline]
 virt_to_page_or_null+0x47/0x170 mm/kmsan/shadow.c:75
 kmsan_get_shadow_origin_ptr+0x35/0xb0 mm/kmsan/shadow.c:97
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:38 [inline]
 __msan_metadata_ptr_for_store_8+0x27/0x40 mm/kmsan/instrumentation.c:94
 skb_set_kcov_handle include/linux/skbuff.h:5445 [inline]
 __finalize_skb_around net/core/skbuff.c:410 [inline]
 __alloc_skb+0xb5e/0x1190 net/core/skbuff.c:720
 alloc_skb include/linux/skbuff.h:1385 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline]
 nsim_dev_trap_report_work+0x3d0/0x1420 drivers/net/netdevsim/dev.c:922
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3397
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3478
 kthread+0x53a/0x5f0 kernel/kthread.c:436
 ret_from_fork+0x20f/0x8d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

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: 5947 Comm: kworker/u8:16 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events_unbound nsim_dev_trap_report_work
=====================================================