------------[ cut here ]------------ RTNL: assertion failed at net/core/dev.c (1953) WARNING: CPU: 1 PID: 3229 at net/core/dev.c:1953 call_netdevice_notifiers_info+0x7c/0x80 net/core/dev.c:1953 Modules linked in: CPU: 1 PID: 3229 Comm: syz-executor.0 Not tainted 6.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:call_netdevice_notifiers_info+0x7c/0x80 net/core/dev.c:1953 Code: bf fe 80 3d b9 75 82 01 00 75 c4 ba a1 07 00 00 48 c7 c6 a0 28 60 83 48 c7 c7 68 86 64 83 c6 05 9d 75 82 01 01 e8 e4 f3 bb fe <0f> 0b eb a1 f3 0f 1e fa 55 48 89 e5 53 48 83 e4 f0 48 83 ec 20 65 RSP: 0018:ffffc90005f778c0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffc90005f778f0 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffc90005f77768 RDI: 00000000ffffffff RBP: 0000000000000018 R08: 0000000000000000 R09: ffffffff83ab2960 R10: ffffc90005f77760 R11: ffffffff83b929a8 R12: ffff88817c930000 R13: ffff888114842e00 R14: ffffc90005f77a20 R15: ffffc90005f77b18 FS: 00007f2f11be16c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2f11bdff78 CR3: 00000001141b5000 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+0x84/0x1f0 net/core/dev.c:8664 dev_set_mtu+0x39/0x90 net/core/dev.c:8694 batadv_update_min_mtu+0x17/0x20 net/batman-adv/hard-interface.c:633 batadv_netlink_set_mesh+0x12e/0x2e0 net/batman-adv/netlink.c:498 genl_family_rcv_msg_doit.isra.0+0xd8/0x120 net/netlink/genetlink.c:970 genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline] genl_rcv_msg+0x1a9/0x2d0 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x53/0x100 net/netlink/af_netlink.c:2549 genl_rcv+0x23/0x30 net/netlink/genetlink.c:1078 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x189/0x260 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x243/0x4b0 net/netlink/af_netlink.c:1914 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0x37/0x70 net/socket.c:748 ____sys_sendmsg+0x26f/0x2e0 net/socket.c:2494 ___sys_sendmsg+0x95/0xe0 net/socket.c:2548 __sys_sendmsg+0x75/0xc0 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: 0033:0x7f2f10e7cae9 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:00007f2f11be10c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2f10f9bf80 RCX: 00007f2f10e7cae9 RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 0000000000000003 RBP: 00007f2f10ec847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f2f10f9bf80 R15: 00007ffe3e5077a8