=====================================================
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
 console_flush_one_record arch/x86/include/asm/irqflags.h:-1 [inline]
 console_flush_all+0xe48/0x1270 kernel/printk/printk.c:3343
 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
 console_unlock+0xeb/0x460 kernel/printk/printk.c:3413
 vprintk_emit+0x850/0xba0 kernel/printk/printk.c:2479
 dev_vprintk_emit+0x5ac/0x7a0 drivers/base/core.c:4914
 dev_printk_emit+0x180/0x1b0 drivers/base/core.c:4925
 __netdev_printk+0x6a0/0x950 net/core/dev.c:12951
 netdev_info+0x1b4/0x1d0 net/core/dev.c:13006
 netif_change_name+0x1323/0x1370 net/core/dev.c:1485
 do_setlink+0x1037/0x7980 net/core/rtnetlink.c:3160
 rtnl_changelink net/core/rtnetlink.c:3798 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3971 [inline]
 rtnl_newlink+0x2de5/0x3a00 net/core/rtnetlink.c:4108
 rtnetlink_rcv_msg+0x106f/0x14b0 net/core/rtnetlink.c:6994
 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2550
 rtnetlink_rcv+0x35/0x40 net/core/rtnetlink.c:7021
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x10b2/0x1250 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0xa08/0xae0 net/socket.c:2206
 __do_compat_sys_socketcall net/compat.c:-1 [inline]
 __se_compat_sys_socketcall net/compat.c:423 [inline]
 __ia32_compat_sys_socketcall+0x717/0x1b70 net/compat.c:423
 ia32_sys_call+0x2c57/0x4360 arch/x86/include/generated/asm/syscalls_32.h:103
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 do_int80_emulation+0x15a/0x330 arch/x86/entry/syscall_32.c:172
 asm_int80_emulation+0x1f/0x30 arch/x86/include/asm/idtentry.h:621

Uninit was stored to memory at:
 mas_topiary_replace lib/maple_tree.c:2411 [inline]
 mas_wmb_replace+0x369d/0x4260 lib/maple_tree.c:2433
 mas_split lib/maple_tree.c:3052 [inline]
 mas_commit_b_node lib/maple_tree.c:3072 [inline]
 mas_wr_bnode lib/maple_tree.c:3739 [inline]
 mas_wr_store_entry+0x30fe/0x96d0 lib/maple_tree.c:3771
 mas_store_prealloc+0x1834/0x1e60 lib/maple_tree.c:5169
 vma_iter_store_overwrite mm/vma.h:607 [inline]
 vma_iter_store_new mm/vma.h:614 [inline]
 vma_complete+0xbea/0x1950 mm/vma.c:356
 __split_vma+0x120c/0x1330 mm/vma.c:566
 vms_gather_munmap_vmas+0x5e3/0x1ab0 mm/vma.c:1429
 __mmap_setup mm/vma.c:2411 [inline]
 __mmap_region mm/vma.c:2741 [inline]
 mmap_region+0xc9d/0x62b0 mm/vma.c:2844
 do_mmap+0x17aa/0x1d70 mm/mmap.c:559
 vm_mmap_pgoff+0x40c/0x760 mm/util.c:581
 ksys_mmap_pgoff+0x524/0x7d0 mm/mmap.c:605
 __do_sys_mmap_pgoff mm/mmap.c:616 [inline]
 __se_sys_mmap_pgoff mm/mmap.c:612 [inline]
 __ia32_sys_mmap_pgoff+0x11a/0x1d0 mm/mmap.c:612
 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+0x17f/0x3f0 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 tmp_next.i created at:
 mas_topiary_replace lib/maple_tree.c:2335 [inline]
 mas_wmb_replace+0x66/0x4260 lib/maple_tree.c:2433
 mas_split lib/maple_tree.c:3052 [inline]
 mas_commit_b_node lib/maple_tree.c:3072 [inline]
 mas_wr_bnode lib/maple_tree.c:3739 [inline]
 mas_wr_store_entry+0x30fe/0x96d0 lib/maple_tree.c:3771

CPU: 0 UID: 0 PID: 11692 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
=====================================================