=====================================================
BUG: KMSAN: uninit-value in __flush_smp_call_function_queue+0x362/0x18e0 kernel/smp.c:535
 __flush_smp_call_function_queue+0x362/0x18e0 kernel/smp.c:535
 generic_smp_call_function_single_interrupt+0x1c/0x30 kernel/smp.c:463
 __sysvec_call_function_single+0x4b/0x3e0 arch/x86/kernel/smp.c:271
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
 sysvec_call_function_single+0x7c/0x90 arch/x86/kernel/smp.c:266
 asm_sysvec_call_function_single+0x1f/0x30 arch/x86/include/asm/idtentry.h:704
 kmsan_get_metadata+0x5/0x160 mm/kmsan/shadow.c:125
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:38 [inline]
 __msan_metadata_ptr_for_load_8+0x24/0x40 mm/kmsan/instrumentation.c:94
 copy_pte_range mm/memory.c:1284 [inline]
 copy_pmd_range mm/memory.c:1405 [inline]
 copy_pud_range mm/memory.c:1442 [inline]
 copy_p4d_range mm/memory.c:1466 [inline]
 copy_page_range+0x20da/0x10930 mm/memory.c:1552
 dup_mmap+0x1c65/0x3050 mm/mmap.c:1841
 dup_mm kernel/fork.c:1533 [inline]
 copy_mm+0x232/0x9b0 kernel/fork.c:1585
 copy_process+0x32c0/0x6a60 kernel/fork.c:2260
 kernel_clone+0x434/0x1100 kernel/fork.c:2700
 __do_sys_clone kernel/fork.c:2841 [inline]
 __se_sys_clone kernel/fork.c:2825 [inline]
 __x64_sys_clone+0x253/0x360 kernel/fork.c:2825
 x64_sys_call+0x157e/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:57
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable reuse.i created at:
 mas_wr_node_store lib/maple_tree.c:3495 [inline]
 mas_wr_store_entry+0x14bd/0x96d0 lib/maple_tree.c:3764
 mas_store_prealloc+0x1834/0x1e60 lib/maple_tree.c:5169

CPU: 0 UID: 0 PID: 5779 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
=====================================================