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BUG: KMSAN: uninit-value in ax25_release+0x748/0x10c0 net/ax25/af_ax25.c:1062
 ax25_release+0x748/0x10c0 net/ax25/af_ax25.c:1062
 __sock_release net/socket.c:659 [inline]
 sock_close+0xd6/0x2d0 net/socket.c:1421
 __fput+0x344/0x1160 fs/file_table.c:422
 ____fput+0x1e/0x30 fs/file_table.c:450
 task_work_run+0x268/0x310 kernel/task_work.c:228
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x170 kernel/entry/common.c:218
 do_syscall_64+0xda/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3994 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 __do_kmalloc_node mm/slub.c:4157 [inline]
 __kmalloc_node_track_caller_noprof+0x6c7/0xf90 mm/slub.c:4177
 kmemdup_noprof+0x48/0xc0 mm/util.c:133
 neigh_parms_alloc+0x8e/0x960 net/core/neighbour.c:1718
 inetdev_init+0x1eb/0x8a0 net/ipv4/devinet.c:281
 inetdev_event+0xbfb/0x1f60 net/ipv4/devinet.c:1565
 notifier_call_chain kernel/notifier.c:93 [inline]
 raw_notifier_call_chain+0xe8/0x440 kernel/notifier.c:461
 call_netdevice_notifiers_info+0x1be/0x2b0 net/core/dev.c:1994
 call_netdevice_notifiers_extack net/core/dev.c:2032 [inline]
 call_netdevice_notifiers net/core/dev.c:2046 [inline]
 register_netdevice+0x2107/0x22d0 net/core/dev.c:10477
 br_dev_newlink+0x49/0x200 net/bridge/br_netlink.c:1563
 rtnl_newlink_create net/core/rtnetlink.c:3510 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3730 [inline]
 rtnl_newlink+0x2e8f/0x4200 net/core/rtnetlink.c:3743
 rtnetlink_rcv_msg+0x12fc/0x1410 net/core/rtnetlink.c:6647
 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2550
 rtnetlink_rcv+0x34/0x40 net/core/rtnetlink.c:6665
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x30f/0x380 net/socket.c:745
 __sys_sendto+0x685/0x830 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0x125/0x1d0 net/socket.c:2212
 x64_sys_call+0x3373/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 16810 Comm: syz.3.2837 Tainted: G        W          6.11.0-rc4-syzkaller-00008-g6e4436539ae1 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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