------------[ cut here ]------------ RTNL: assertion failed at net/core/dev.c (1953) WARNING: CPU: 1 PID: 9214 at net/core/dev.c:1953 call_netdevice_notifiers_info+0x107/0x130 net/core/dev.c:1953 Modules linked in: CPU: 1 PID: 9214 Comm: syz-executor.5 Not tainted 6.5.0-rc6-syzkaller-00126-gd44036cad311 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:call_netdevice_notifiers_info+0x107/0x130 net/core/dev.c:1953 Code: f9 40 84 ed 75 8d e8 d8 68 5e f9 ba a1 07 00 00 48 c7 c6 e0 34 81 8b 48 c7 c7 20 35 81 8b c6 05 07 35 6e 06 01 e8 f9 2a 25 f9 <0f> 0b e9 62 ff ff ff 48 89 df e8 ea 75 b2 f9 e9 15 ff ff ff e8 e0 RSP: 0018:ffffc90005d9f2b8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffc90005d9f320 RCX: ffffc9000c501000 RDX: 0000000000040000 RSI: ffffffff814ccc86 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000018 R13: ffff88802c731d00 R14: ffff8880299940e8 R15: 0000000000000001 FS: 00007f65fddfe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f79500c56be CR3: 00000000173b1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_netdevice_notifiers_extack net/core/dev.c:2000 [inline] call_netdevice_notifiers net/core/dev.c:2014 [inline] dev_set_mtu_ext+0x1e8/0x5d0 net/core/dev.c:8664 dev_set_mtu+0xb1/0x160 net/core/dev.c:8694 batadv_update_min_mtu+0x6e/0x90 net/batman-adv/hard-interface.c:645 batadv_netlink_set_mesh+0x7d8/0x14e0 net/batman-adv/netlink.c:498 genl_family_rcv_msg_doit.isra.0+0x1ef/0x2d0 net/netlink/genetlink.c:970 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x559/0x800 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:748 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f65ff27cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f65fddfe0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f65ff39c050 RCX: 00007f65ff27cae9 RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 0000000000000006 RBP: 00007f65ff2c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f65ff39c050 R15: 00007ffe80fd93f8