skbuff: skb_under_panic: text:ffffffff88b6ffdb len:23 put:19 head:ffff8880754d7c80 data:ffff8880754d7c7f tail:0x16 end:0x140 dev:bond1 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:150! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4646 Comm: dhcpcd Not tainted 6.2.0-syzkaller-12485-gf3a2439f20d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 RIP: 0010:skb_panic+0x152/0x1d0 net/core/skbuff.c:150 Code: 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 70 41 56 45 89 e8 48 c7 c7 80 74 5c 8b 41 57 56 48 89 ee 52 4c 89 e2 e8 de 2c 59 f9 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 09 1a c6 f9 4c RSP: 0018:ffffc9000381f720 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff888078e1c180 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81685b5c RDI: 0000000000000005 RBP: ffffffff8b5c82c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000201 R11: 0000000000000000 R12: ffffffff88b6ffdb R13: 0000000000000013 R14: ffff88807cd70000 R15: 0000000000000140 FS: 00007ff9a3306740(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa43a192300 CR3: 000000007da4d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_under_panic net/core/skbuff.c:160 [inline] skb_push+0xc8/0xe0 net/core/skbuff.c:2333 ipgre_header+0x6b/0x3c0 net/ipv4/ip_gre.c:852 dev_hard_header include/linux/netdevice.h:3103 [inline] lapbeth_data_transmit+0x2a3/0x360 drivers/net/wan/lapbether.c:257 lapb_data_transmit+0x93/0xc0 net/lapb/lapb_iface.c:447 lapb_transmit_buffer+0x187/0x3a0 net/lapb/lapb_out.c:149 lapb_send_control+0x1cb/0x370 net/lapb/lapb_subr.c:251 lapb_establish_data_link+0xeb/0x110 net/lapb/lapb_out.c:163 lapb_device_event+0x399/0x570 net/lapb/lapb_iface.c:512 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1937 call_netdevice_notifiers_extack net/core/dev.c:1975 [inline] call_netdevice_notifiers net/core/dev.c:1989 [inline] __dev_notify_flags+0x120/0x2d0 net/core/dev.c:8564 dev_change_flags+0x11b/0x170 net/core/dev.c:8602 devinet_ioctl+0x15fb/0x1df0 net/ipv4/devinet.c:1147 inet_ioctl+0x33f/0x380 net/ipv4/af_inet.c:977 sock_do_ioctl+0xcc/0x230 net/socket.c:1197 sock_ioctl+0x1f8/0x680 net/socket.c:1314 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff9a33f40e7 Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 61 9d 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffec99a28b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff9a33066c8 RCX: 00007ff9a33f40e7 RDX: 00007ffec99b2aa8 RSI: 0000000000008914 RDI: 000000000000001b RBP: 00007ffec99c2c58 R08: 00007ffec99b2a68 R09: 00007ffec99b2a18 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec99b2aa8 R14: 0000000000000028 R15: 0000000000008914 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x152/0x1d0 net/core/skbuff.c:150 Code: 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 70 41 56 45 89 e8 48 c7 c7 80 74 5c 8b 41 57 56 48 89 ee 52 4c 89 e2 e8 de 2c 59 f9 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 09 1a c6 f9 4c RSP: 0018:ffffc9000381f720 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff888078e1c180 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81685b5c RDI: 0000000000000005 RBP: ffffffff8b5c82c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000201 R11: 0000000000000000 R12: ffffffff88b6ffdb R13: 0000000000000013 R14: ffff88807cd70000 R15: 0000000000000140 FS: 00007ff9a3306740(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa43a192300 CR3: 000000007da4d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400