syzbot

gre1: entered allmulticast mode
skbuff: skb_under_panic: text:ffffffff89ec2b07 len:-1825582908 put:-1825582932 head:ffff888040e65040 data:ffff887fadb68054 tail:0xd8 end:0x180 dev:bond0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5515 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 60 b0 6f 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 4e 6a f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000294e720 EFLAGS: 00010282
RAX: 0000000000000098 RBX: dffffc0000000000 RCX: 52eb4dbabbc3e900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000180 R08: ffffc9000294e487 R09: 1ffff92000529c90
R10: dffffc0000000000 R11: fffff52000529c91 R12: ffff8880125288d0
R13: ffff888040e65040 R14: ffff887fadb68054 R15: 00000000000000d8
FS:  0000555559b63500(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556b723b4950 CR3: 0000000035eaf000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 skb_under_panic net/core/skbuff.c:223 [inline]
 skb_push+0xc3/0xe0 net/core/skbuff.c:2641
 ipgre_header+0x67/0x290 net/ipv4/ip_gre.c:897
 dev_hard_header include/linux/netdevice.h:3436 [inline]
 arp_create+0x3fd/0x990 net/ipv4/arp.c:578
 arp_send_dst net/ipv4/arp.c:314 [inline]
 arp_send+0xa5/0x190 net/ipv4/arp.c:328
 inetdev_send_gratuitous_arp net/ipv4/devinet.c:1571 [inline]
 inetdev_event+0x1156/0x15b0 net/ipv4/devinet.c:1638
 notifier_call_chain+0x19d/0x3a0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
 call_netdevice_notifiers net/core/dev.c:2282 [inline]
 netif_open+0xfd/0x170 net/core/dev.c:1711
 dev_open+0x125/0x260 net/core/dev_api.c:201
 bond_enslave+0x6ca/0x3ac0 drivers/net/bonding/bond_main.c:1881
 do_set_master+0x533/0x6d0 net/core/rtnetlink.c:2963
 rtnl_newlink_create+0x677/0xb00 net/core/rtnetlink.c:3854
 __rtnl_newlink net/core/rtnetlink.c:3957 [inline]
 rtnl_newlink+0x16e7/0x1c90 net/core/rtnetlink.c:4072
 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x505/0x820 net/socket.c:2592
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646
 __sys_sendmsg net/socket.c:2678 [inline]
 __do_sys_sendmsg net/socket.c:2683 [inline]
 __se_sys_sendmsg net/socket.c:2681 [inline]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2681
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7febbb38f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcc3087d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007febbb5e5fa0 RCX: 00007febbb38f7c9
RDX: 0000000000000800 RSI: 0000200000000280 RDI: 0000000000000004
RBP: 00007febbb413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007febbb5e5fa0 R14: 00007febbb5e5fa0 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213
Code: c7 60 b0 6f 8c 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 4d 89 e9 50 55 41 57 41 56 e8 4e 6a f5 ff 48 83 c4 20 90 <0f> 0b cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000294e720 EFLAGS: 00010282
RAX: 0000000000000098 RBX: dffffc0000000000 RCX: 52eb4dbabbc3e900
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000180 R08: ffffc9000294e487 R09: 1ffff92000529c90
R10: dffffc0000000000 R11: fffff52000529c91 R12: ffff8880125288d0
R13: ffff888040e65040 R14: ffff887fadb68054 R15: 00000000000000d8
FS:  0000555559b63500(0000) GS:ffff88808d414000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e030273048 CR3: 0000000035eaf000 CR4: 0000000000352ef0