------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:120! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 8536 Comm: syz-executor.3 Not tainted 6.1.79-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_panic net/core/skbuff.c:116 [inline] pc : skb_under_panic+0x13c/0x140 net/core/skbuff.c:130 lr : skb_panic net/core/skbuff.c:116 [inline] lr : skb_under_panic+0x13c/0x140 net/core/skbuff.c:130 sp : ffff8000208b6e50 x29: ffff8000208b6e60 x28: dfff800000000000 x27: dfff800000000000 x26: ffff000117b70510 x25: 0000000000000058 x24: fffeffffd9b1b42c x23: ffff0000d9b13400 x22: 00000000ffff802c x21: 00000000000000c0 x20: 00000000ffff8014 x19: ffff800010d99d80 x18: ffff8000208b63a0 x17: ffff8000188c9000 x16: ffff80001215a28c x15: ffff8000183aef80 x14: ffff0000da7e41f8 x13: dfff800000000000 x12: 0000000000040000 x11: 00000000000064ac x10: ffff800025a29000 x9 : 080d5c8c6c1f5600 x8 : 080d5c8c6c1f5600 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff80000aa8ec8c x2 : ffff0001b435bcd0 x1 : 0000000000000200 x0 : 000000000000008d Call trace: skb_panic net/core/skbuff.c:116 [inline] skb_under_panic+0x13c/0x140 net/core/skbuff.c:130 skb_push+0x104/0x11c net/core/skbuff.c:2180 ipgre_header+0x78/0x3c4 net/ipv4/ip_gre.c:855 dev_hard_header include/linux/netdevice.h:3073 [inline] arp_create+0x2ac/0x79c net/ipv4/arp.c:577 arp_send_dst+0xa8/0x318 net/ipv4/arp.c:314 arp_solicit+0x9d4/0xc0c net/ipv4/arp.c:392 neigh_probe+0xc4/0x128 net/core/neighbour.c:1075 __neigh_event_send+0xe50/0x1668 net/core/neighbour.c:1242 neigh_event_send_probe include/net/neighbour.h:468 [inline] neigh_event_send include/net/neighbour.h:474 [inline] neigh_resolve_output+0x17c/0x618 net/core/neighbour.c:1547 neigh_output include/net/neighbour.h:544 [inline] ip_finish_output2+0xc8c/0x1198 net/ipv4/ip_output.c:228 __ip_finish_output+0x1b0/0x458 ip_finish_output+0x40/0x268 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip_output+0x330/0x49c net/ipv4/ip_output.c:430 dst_output include/net/dst.h:444 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0x134/0x2f8 net/ipv4/ip_output.c:1596 ip_push_pending_frames+0x68/0x84 net/ipv4/ip_output.c:1616 raw_sendmsg+0x12bc/0x1d44 net/ipv4/raw.c:649 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:839 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x55c/0x848 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2597 __do_sys_sendmsg net/socket.c:2606 [inline] __se_sys_sendmsg net/socket.c:2604 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2604 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: aa1803e6 aa1903e7 a90023f5 94756656 (d4210000) ---[ end trace 0000000000000000 ]---