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BUG: KMSAN: uninit-value in native_apic_mem_write+0x72/0x90 arch/x86/include/asm/apic.h:105
 native_apic_mem_write+0x72/0x90 arch/x86/include/asm/apic.h:105
 apic_eoi arch/x86/include/asm/apic.h:398 [inline]
 ack_APIC_irq arch/x86/include/asm/apic.h:444 [inline]
 __sysvec_reschedule_ipi arch/x86/kernel/smp.c:227 [inline]
 sysvec_reschedule_ipi+0x35/0x120 arch/x86/kernel/smp.c:225
 asm_sysvec_reschedule_ipi+0x1f/0x30 arch/x86/include/asm/idtentry.h:654
 __nr_to_section include/linux/mmzone.h:1719 [inline]
 __pfn_to_section include/linux/mmzone.h:1827 [inline]
 pfn_valid include/linux/mmzone.h:1878 [inline]
 kmsan_virt_addr_valid arch/x86/include/asm/kmsan.h:82 [inline]
 virt_to_page_or_null mm/kmsan/shadow.c:75 [inline]
 kmsan_get_metadata+0x1a5/0x2c0 mm/kmsan/shadow.c:143
 kmsan_get_shadow_origin_ptr+0x4d/0xa0 mm/kmsan/shadow.c:102
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:36 [inline]
 __msan_metadata_ptr_for_store_4+0x27/0x40 mm/kmsan/instrumentation.c:91
 __skb_dst_copy include/net/dst.h:275 [inline]
 skb_dst_copy include/net/dst.h:283 [inline]
 __copy_skb_header+0x24d/0xac0 net/core/skbuff.c:1192
 __skb_clone+0xa2/0xa40 net/core/skbuff.c:1243
 skb_clone+0x4a9/0x670 net/core/skbuff.c:1721
 neigh_probe net/core/neighbour.c:1092 [inline]
 neigh_timer_handler+0xf39/0x1740 net/core/neighbour.c:1177
 call_timer_fn+0x8d/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x94f/0x11c0 kernel/time/timer.c:2022
 run_timer_softirq+0x75/0xf0 kernel/time/timer.c:2035
 __do_softirq+0x211/0x818 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x117/0x260 kernel/softirq.c:650
 irq_exit_rcu+0x12/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1107
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:649
 smap_save mm/kmsan/instrumentation.c:92 [inline]
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:33 [inline]
 __msan_metadata_ptr_for_load_8+0xe/0x40 mm/kmsan/instrumentation.c:92
 is_last_frame arch/x86/kernel/unwind_frame.c:87 [inline]
 is_last_task_frame+0x40/0x400 arch/x86/kernel/unwind_frame.c:156
 unwind_next_frame+0x6c/0x3e0 arch/x86/kernel/unwind_frame.c:276
 arch_stack_walk+0x323/0x3c0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x11a/0x1b0 kernel/stacktrace.c:122
 kmsan_save_stack_with_flags mm/kmsan/core.c:75 [inline]
 kmsan_internal_poison_memory+0x49/0x90 mm/kmsan/core.c:60
 kmsan_slab_free+0xd1/0x130 mm/kmsan/hooks.c:89
 slab_free_hook mm/slub.c:1751 [inline]
 slab_free_freelist_hook mm/slub.c:1807 [inline]
 slab_free mm/slub.c:3787 [inline]
 __kmem_cache_free+0x6c6/0x11b0 mm/slub.c:3800
 kfree+0x1fe/0x4f0 mm/slab_common.c:1020
 tomoyo_path_perm+0xaca/0xc50 security/tomoyo/file.c:842
 tomoyo_inode_getattr+0x58/0x70 security/tomoyo/tomoyo.c:122
 security_inode_getattr+0x156/0x240 security/security.c:1375
 vfs_getattr+0x9a/0x640 fs/stat.c:161
 vfs_statx+0x32b/0x9a0 fs/stat.c:236
 vfs_fstatat fs/stat.c:270 [inline]
 __do_sys_newfstatat fs/stat.c:440 [inline]
 __se_sys_newfstatat+0x1ba/0xa20 fs/stat.c:434
 __x64_sys_newfstatat+0x122/0x170 fs/stat.c:434
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was created at:
 slab_post_alloc_hook+0x271/0xf70 mm/slab.h:766
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x586/0xb40 mm/slub.c:3476
 skb_clone+0x3ec/0x670 net/core/skbuff.c:1714
 neigh_probe net/core/neighbour.c:1092 [inline]
 neigh_timer_handler+0xf39/0x1740 net/core/neighbour.c:1177
 call_timer_fn+0x8d/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x94f/0x11c0 kernel/time/timer.c:2022
 run_timer_softirq+0x75/0xf0 kernel/time/timer.c:2035
 __do_softirq+0x211/0x818 kernel/softirq.c:571

CPU: 1 PID: 4374 Comm: udevd Not tainted 6.2.0-rc8-syzkaller-80999-g31b504f219a9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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