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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
 __nr_to_section include/linux/mmzone.h:-1 [inline]
 __pfn_to_section include/linux/mmzone.h:2198 [inline]
 pfn_valid include/linux/mmzone.h:2280 [inline]
 kmsan_virt_addr_valid arch/x86/include/asm/kmsan.h:94 [inline]
 virt_to_page_or_null+0x79/0x170 mm/kmsan/shadow.c:75
 kmsan_get_metadata+0xf1/0x160 mm/kmsan/shadow.c:141
 kmsan_get_shadow_origin_ptr+0x4a/0xb0 mm/kmsan/shadow.c:102
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:38 [inline]
 __msan_metadata_ptr_for_load_8+0x24/0x40 mm/kmsan/instrumentation.c:94
 insert_page+0x485/0x510 mm/memory.c:2408
 vm_insert_page+0x4b2/0x5c0 mm/memory.c:2591
 kcov_mmap+0xb8/0x130 kernel/kcov.c:514
 vfs_mmap include/linux/fs.h:2071 [inline]
 mmap_file mm/internal.h:168 [inline]
 __mmap_new_file_vma mm/vma.c:2496 [inline]
 __mmap_new_vma mm/vma.c:2562 [inline]
 __mmap_region mm/vma.c:2771 [inline]
 mmap_region+0x3c23/0x5f90 mm/vma.c:2857
 do_mmap+0x17aa/0x1d70 mm/mmap.c:560
 vm_mmap_pgoff+0x40c/0x760 mm/util.c:581
 ksys_mmap_pgoff+0x51d/0x7e0 mm/mmap.c:606
 __do_sys_mmap_pgoff mm/mmap.c:617 [inline]
 __se_sys_mmap_pgoff mm/mmap.c:613 [inline]
 __ia32_sys_mmap_pgoff+0x11a/0x1d0 mm/mmap.c:613
 ia32_sys_call+0x3743/0x4360 arch/x86/include/generated/asm/syscalls_32.h:193
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x180/0x460 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: 1 UID: 0 PID: 9889 Comm: syz.0.1033 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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