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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
 kmsan_get_metadata+0x272/0x2c0
 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
 tipc_disc_timeout+0x8e0/0xc60 net/tipc/discover.c:333
 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
 get_current arch/x86/include/asm/current.h:41 [inline]
 kmsan_get_context mm/kmsan/kmsan.h:106 [inline]
 __msan_get_context_state+0x2f/0x40 mm/kmsan/instrumentation.c:331
 _raw_spin_lock+0x17/0xa0
 spin_lock include/linux/spinlock.h:350 [inline]
 follow_page_pte+0x3d2/0x2450 mm/gup.c:551
 follow_pud_mask mm/gup.c:735 [inline]
 follow_p4d_mask mm/gup.c:752 [inline]
 follow_page_mask+0x134c/0x2660 mm/gup.c:809
 __get_user_pages+0x970/0x2780 mm/gup.c:1151
 __get_user_pages_locked mm/gup.c:1373 [inline]
 get_dump_page+0x25c/0x1190 mm/gup.c:1871
 dump_user_range+0x14b/0xf80 fs/coredump.c:913
 elf_core_dump+0x5fb5/0x6320 fs/binfmt_elf.c:2137
 do_coredump+0x3ad2/0x4c80 fs/coredump.c:762
 get_signal+0x26ea/0x2cb0 kernel/signal.c:2845
 arch_do_signal_or_restart+0x79/0xcc0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop+0x142/0x3b0 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x191/0x240 kernel/entry/common.c:203
 irqentry_exit_to_user_mode+0xd/0x20 kernel/entry/common.c:309
 irqentry_exit+0x16/0x40 kernel/entry/common.c:412
 exc_general_protection+0x29b/0x460 arch/x86/kernel/traps.c:728
 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:564

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
 tipc_disc_timeout+0x8e0/0xc60 net/tipc/discover.c:333
 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: 0 PID: 14824 Comm: syz-executor.1 Tainted: G        W          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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