netlink: 'syz-executor.0': attribute type 10 has an invalid length. gretap0: entered allmulticast mode bond0: (slave gretap0): Enslaving as an active interface with an up link ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5143 at include/linux/skbuff.h:2723 pskb_may_pull_reason include/linux/skbuff.h:2723 [inline] WARNING: CPU: 1 PID: 5143 at include/linux/skbuff.h:2723 pskb_may_pull include/linux/skbuff.h:2739 [inline] WARNING: CPU: 1 PID: 5143 at include/linux/skbuff.h:2723 pskb_network_may_pull include/linux/skbuff.h:3054 [inline] WARNING: CPU: 1 PID: 5143 at include/linux/skbuff.h:2723 pskb_inet_may_pull include/net/ip_tunnels.h:361 [inline] WARNING: CPU: 1 PID: 5143 at include/linux/skbuff.h:2723 gre_tap_xmit+0x293/0x2e0 net/ipv4/ip_gre.c:734 Modules linked in: CPU: 1 PID: 5143 Comm: syz-executor.0 Not tainted 6.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2723 [inline] RIP: 0010:pskb_may_pull include/linux/skbuff.h:2739 [inline] RIP: 0010:pskb_network_may_pull include/linux/skbuff.h:3054 [inline] RIP: 0010:pskb_inet_may_pull include/net/ip_tunnels.h:361 [inline] RIP: 0010:gre_tap_xmit+0x293/0x2e0 net/ipv4/ip_gre.c:734 Code: 4c 89 ff 4c 89 f6 48 8b 14 24 e8 58 41 fe ff 31 c0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 3e 2b c3 fc 90 <0f> 0b 90 e9 e7 fd ff ff 44 89 e7 89 ee e8 eb 2c c3 fc 41 39 ec 72 RSP: 0018:ffffc90002d2f890 EFLAGS: 00010293 RAX: ffffffff8486ea72 RBX: 0000000000000000 RCX: ffff88816c57d280 RDX: 0000000000000000 RSI: 00000000ffffffb6 RDI: 0000000000000000 RBP: 00000000ffffffb6 R08: ffffffff8486e855 R09: ffffffff84416caf R10: 0000000000000002 R11: ffffffff8486e7e0 R12: ffff88817970a000 R13: 0000000000000000 R14: ffff88817970a000 R15: ffff88811752ff00 FS: 00007f4e780d06c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efc2be82ff8 CR3: 000000016f00c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __netdev_start_xmit include/linux/netdevice.h:4990 [inline] netdev_start_xmit include/linux/netdevice.h:5004 [inline] xmit_one net/core/dev.c:3530 [inline] dev_hard_start_xmit+0x12b/0x4a0 net/core/dev.c:3546 sch_direct_xmit+0x158/0x3f0 net/sched/sch_generic.c:342 __dev_xmit_skb net/core/dev.c:3759 [inline] __dev_queue_xmit+0xb50/0x1700 net/core/dev.c:4300 bond_start_xmit+0x6ee/0x990 drivers/net/bonding/bond_main.c:5467 __netdev_start_xmit include/linux/netdevice.h:4990 [inline] netdev_start_xmit include/linux/netdevice.h:5004 [inline] xmit_one net/core/dev.c:3530 [inline] dev_hard_start_xmit+0x12b/0x4a0 net/core/dev.c:3546 __dev_queue_xmit+0xbef/0x1700 net/core/dev.c:4334 packet_snd net/packet/af_packet.c:3081 [inline] packet_sendmsg+0x1e49/0x24f0 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xca/0xf0 net/socket.c:745 ____sys_sendmsg+0x26e/0x360 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x35d/0x3d0 net/socket.c:2667 do_syscall_64+0xe6/0x230 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f4e7727dea9 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:00007f4e780d00c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4e773abf80 RCX: 00007f4e7727dea9 RDX: 00000000200400c4 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00007f4e772ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4e773abf80 R15: 00007ffea9acae68