------------[ cut here ]------------ WARNING: CPU: 0 PID: 17115 at ./include/net/netdev_lock.h:17 netdev_assert_locked include/net/netdev_lock.h:17 [inline] WARNING: CPU: 0 PID: 17115 at ./include/net/netdev_lock.h:17 netdev_nl_dev_fill+0x6bc/0x860 net/core/netdev-genl.c:41 Modules linked in: CPU: 0 UID: 0 PID: 17115 Comm: syz-executor Not tainted 6.15.0-rc1-syzkaller-00412-g4e34a840613b #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:netdev_assert_locked include/net/netdev_lock.h:17 [inline] RIP: 0010:netdev_nl_dev_fill+0x6bc/0x860 net/core/netdev-genl.c:41 Code: 1c 24 44 29 eb 4c 89 e8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 4a 01 00 00 41 89 5d 00 31 c0 e9 4d fe ff ff e8 85 ec c3 f7 90 <0f> 0b 90 e9 2c fa ff ff e8 77 ec c3 f7 90 0f 0b 90 42 80 3c 3b 00 RSP: 0018:ffffc90002fe6ba0 EFLAGS: 00010293 RAX: ffffffff89ff68eb RBX: 0000000000000000 RCX: ffff88807953bc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002fe6cd0 R08: ffffffff89ff630c R09: 1ffff11004a035dc R10: dffffc0000000000 R11: ffffed1004a035dd R12: ffff88804e778000 R13: ffff888075f69140 R14: ffff888075f69140 R15: ffffc90002fe6d20 FS: 000055557d2ef500(0000) GS:ffff888124fa5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556cbd5808 CR3: 0000000079326000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netdev_genl_dev_notify+0x1fb/0x450 net/core/netdev-genl.c:102 netdev_genl_netdevice_event+0x81/0xa0 net/core/netdev-genl.c:-1 notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2264 [inline] call_netdevice_notifiers net/core/dev.c:2278 [inline] register_netdevice+0x16c0/0x1b80 net/core/dev.c:11100 ipvlan_link_new+0x412/0xa80 drivers/net/ipvlan/ipvlan_main.c:592 rtnl_newlink_create+0x3a1/0xc30 net/core/rtnetlink.c:3837 __rtnl_newlink net/core/rtnetlink.c:3954 [inline] rtnl_newlink+0x18b0/0x1fe0 net/core/rtnetlink.c:4069 rtnetlink_rcv_msg+0x80f/0xd70 net/core/rtnetlink.c:6959 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 __sys_sendto+0x365/0x4c0 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb8a0f8fffc Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b RSP: 002b:00007ffdb25d79e0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fb8a1ce4620 RCX: 00007fb8a0f8fffc RDX: 0000000000000058 RSI: 00007fb8a1ce4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffdb25d7a34 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fb8a1ce4670 R15: 0000000000000000