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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
 kmsan_phys_addr_valid arch/x86/include/asm/kmsan.h:55 [inline]
 kmsan_virt_addr_valid arch/x86/include/asm/kmsan.h:79 [inline]
 virt_to_page_or_null+0x27/0x170 mm/kmsan/shadow.c:75
 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
 __unwind_start+0x35c/0x530 arch/x86/kernel/unwind_frame.c:416
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xfc/0x280 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0xc2/0x100 kernel/stacktrace.c:122
 kmsan_save_stack_with_flags mm/kmsan/core.c:73 [inline]
 kmsan_internal_poison_memory+0x4a/0x90 mm/kmsan/core.c:57
 kmsan_slab_alloc+0xdc/0x160 mm/kmsan/hooks.c:66
 slab_post_alloc_hook mm/slub.c:4577 [inline]
 slab_alloc_node mm/slub.c:4899 [inline]
 kmem_cache_alloc_noprof+0x373/0x1250 mm/slub.c:4906
 anon_vma_chain_alloc mm/rmap.c:142 [inline]
 __anon_vma_prepare+0xe7/0xb40 mm/rmap.c:194
 __vmf_anon_prepare mm/memory.c:3829 [inline]
 vmf_anon_prepare mm/internal.h:503 [inline]
 do_anonymous_page mm/memory.c:5388 [inline]
 do_pte_missing+0x6dac/0x7350 mm/memory.c:4564
 handle_pte_fault mm/memory.c:6427 [inline]
 __handle_mm_fault mm/memory.c:6565 [inline]
 handle_mm_fault+0x2da3/0x6ee0 mm/memory.c:6734
 do_user_addr_fault+0x1760/0x2510 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x70/0xb0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:618

Local variable reuse.i created at:
 mas_wr_node_store lib/maple_tree.c:3129 [inline]
 mas_wr_store_entry+0xcf4/0x12a90 lib/maple_tree.c:3531
 mas_store_prealloc+0xb66/0x10c0 lib/maple_tree.c:4936

CPU: 1 UID: 0 PID: 8678 Comm: syz.2.1040 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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