skbuff: skb_under_panic: text:ffffffff894fe13b len:23 put:19 head:ffff88802e34f900 data:ffff88802e34f8ff tail:0x16 end:0x140 dev:bond1 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:193! invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 4726 Comm: dhcpcd Not tainted 6.8.0-rc4-syzkaller-g841c35169323 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:193 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 e0 3e 2b 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 ba 8a ce f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 54 c9 45 f9 4c RSP: 0018:ffffc9000331f6b8 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff88806b811140 RCX: ffffffff816d4fb9 RDX: 0000000000000000 RSI: ffffffff816dd836 RDI: 0000000000000005 RBP: ffffffff8c2b5260 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000201 R11: 0000000000000001 R12: ffffffff894fe13b R13: 0000000000000013 R14: ffff88806d7e8120 R15: 0000000000000140 FS: 00007fed6fd18740(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056142696c068 CR3: 000000002ec54000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_under_panic net/core/skbuff.c:203 [inline] skb_push+0xca/0xf0 net/core/skbuff.c:2489 ipgre_header+0x6b/0x3c0 net/ipv4/ip_gre.c:857 dev_hard_header include/linux/netdevice.h:3225 [inline] lapbeth_data_transmit+0x2a0/0x350 drivers/net/wan/lapbether.c:257 lapb_data_transmit+0x93/0xc0 net/lapb/lapb_iface.c:447 lapb_transmit_buffer+0xce/0x390 net/lapb/lapb_out.c:149 lapb_send_control+0x1c8/0x320 net/lapb/lapb_subr.c:251 lapb_establish_data_link+0xeb/0x110 net/lapb/lapb_out.c:163 lapb_device_event+0x3ae/0x580 net/lapb/lapb_iface.c:512 notifier_call_chain+0xb9/0x3c0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1966 call_netdevice_notifiers_extack net/core/dev.c:2004 [inline] call_netdevice_notifiers net/core/dev.c:2018 [inline] __dev_notify_flags+0x12d/0x2e0 net/core/dev.c:8687 dev_change_flags+0x10c/0x160 net/core/dev.c:8725 devinet_ioctl+0x13f3/0x1f20 net/ipv4/devinet.c:1167 inet_ioctl+0x3aa/0x3f0 net/ipv4/af_inet.c:1000 sock_do_ioctl+0x116/0x280 net/socket.c:1222 sock_ioctl+0x22e/0x6c0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7fed6fde6d49 Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffcf9dc4598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fed6fd186c0 RCX: 00007fed6fde6d49 RDX: 00007ffcf9dd4788 RSI: 0000000000008914 RDI: 0000000000000012 RBP: 00007ffcf9de4948 R08: 00007ffcf9dd4748 R09: 00007ffcf9dd46f8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf9dd4788 R14: 0000000000000028 R15: 0000000000008914 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:193 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 e0 3e 2b 8c 41 57 56 48 89 ee 52 4c 89 e2 e8 ba 8a ce f8 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 54 c9 45 f9 4c RSP: 0018:ffffc9000331f6b8 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff88806b811140 RCX: ffffffff816d4fb9 RDX: 0000000000000000 RSI: ffffffff816dd836 RDI: 0000000000000005 RBP: ffffffff8c2b5260 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000201 R11: 0000000000000001 R12: ffffffff894fe13b R13: 0000000000000013 R14: ffff88806d7e8120 R15: 0000000000000140 FS: 00007fed6fd18740(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056142696c068 CR3: 000000002ec54000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400