skbuff: skb_under_panic: text:ffffffff8915a15b len:23 put:19 head:ffff88801cb06700 data:ffff88801cb066ff tail:0x16 end:0x140 dev:bond1 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:193! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4734 Comm: dhcpcd Not tainted 6.7.0-rc4-syzkaller-g33cc938e65a9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_panic+0x153/0x1d0 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 40 e7 e8 8b 41 57 56 48 89 ee 52 4c 89 e2 e8 0e 67 02 f9 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 48 31 76 f9 4c RSP: 0018:ffffc9000350f6d8 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff88806ff798c0 RCX: ffffffff816a7cd9 RDX: 0000000000000000 RSI: ffffffff816b0182 RDI: 0000000000000005 RBP: ffffffff8be8fac0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000201 R11: 0000000000000001 R12: ffffffff8915a15b R13: 0000000000000013 R14: ffff88806c120000 R15: 0000000000000140 FS: 00007f0c924b3740(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a445fd8131 CR3: 0000000020568000 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+0xc6/0xe0 net/core/skbuff.c:2451 ipgre_header+0x6b/0x3c0 net/ipv4/ip_gre.c:854 dev_hard_header include/linux/netdevice.h:3188 [inline] lapbeth_data_transmit+0x2a6/0x350 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+0x39e/0x570 net/lapb/lapb_iface.c:512 notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93 call_netdevice_notifiers_info+0xbe/0x130 net/core/dev.c:1967 call_netdevice_notifiers_extack net/core/dev.c:2005 [inline] call_netdevice_notifiers net/core/dev.c:2019 [inline] __dev_notify_flags+0x12d/0x2e0 net/core/dev.c:8644 dev_change_flags+0x122/0x170 net/core/dev.c:8682 devinet_ioctl+0x13ef/0x1f10 net/ipv4/devinet.c:1167 inet_ioctl+0x3a6/0x3f0 net/ipv4/af_inet.c:997 sock_do_ioctl+0x113/0x270 net/socket.c:1220 sock_ioctl+0x22e/0x6b0 net/socket.c:1339 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+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f0c92581d49 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:00007ffc00e0a868 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0c924b36c0 RCX: 00007f0c92581d49 RDX: 00007ffc00e1aa58 RSI: 0000000000008914 RDI: 0000000000000018 RBP: 00007ffc00e2ac18 R08: 00007ffc00e1aa18 R09: 00007ffc00e1a9c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc00e1aa58 R14: 0000000000000028 R15: 0000000000008914 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x153/0x1d0 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 40 e7 e8 8b 41 57 56 48 89 ee 52 4c 89 e2 e8 0e 67 02 f9 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 48 31 76 f9 4c RSP: 0018:ffffc9000350f6d8 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff88806ff798c0 RCX: ffffffff816a7cd9 RDX: 0000000000000000 RSI: ffffffff816b0182 RDI: 0000000000000005 RBP: ffffffff8be8fac0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000201 R11: 0000000000000001 R12: ffffffff8915a15b R13: 0000000000000013 R14: ffff88806c120000 R15: 0000000000000140 FS: 00007f0c924b3740(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a445fd8131 CR3: 0000000020568000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400