IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready 8021q: adding VLAN 0 to HW filter on device batadv0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 7133 Comm: syz-executor.4 Not tainted 4.14.174-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88807fb022c0 task.stack: ffff88807d548000 RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline] RIP: 0010:__skb_unlink include/linux/skbuff.h:1888 [inline] RIP: 0010:skb_unlink+0xbb/0x160 net/core/skbuff.c:2942 RSP: 0018:ffff88807d54f870 EFLAGS: 00010002 RAX: 0000000000000286 RBX: ffff888080f16c00 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffff88807fb02b68 RDI: 0000000000000008 RBP: ffff88807d54f898 R08: ffff88807fb02b88 R09: 0000000000000d30 R10: 0000000000000028 R11: ffff88807fb022c0 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888075fda1a0 R15: 0000000000000000 FS: 00007f08f1851700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 0000000091387000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_recvmsg+0x395/0x570 net/kcm/kcmsock.c:1160 sock_recvmsg_nosec+0x7b/0xd0 net/socket.c:819 ___sys_recvmsg+0x206/0x4d0 net/socket.c:2221 __sys_recvmmsg+0x20d/0x600 net/socket.c:2329 SYSC_recvmmsg net/socket.c:2405 [inline] SyS_recvmmsg+0x109/0x120 net/socket.c:2394 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a639 RSP: 002b:00007f08f1850c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045a639 RDX: 0400000000000310 RSI: 0000000020003540 RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f08f18516d4 R13: 00000000004c82f0 R14: 00000000004de6e0 R15: 00000000ffffffff Code: 00 00 00 49 8d 7d 08 4c 8b 63 08 48 ba 00 00 00 00 00 fc ff df 48 c7 43 08 00 00 00 00 48 89 f9 48 c7 03 00 00 00 00 48 c1 e9 03 <80> 3c 11 00 75 5b 4c 89 e1 4d 89 65 08 48 ba 00 00 00 00 00 fc RIP: __write_once_size include/linux/compiler.h:210 [inline] RSP: ffff88807d54f870 RIP: __skb_unlink include/linux/skbuff.h:1888 [inline] RSP: ffff88807d54f870 RIP: skb_unlink+0xbb/0x160 net/core/skbuff.c:2942 RSP: ffff88807d54f870 ---[ end trace 768393388dfe4b0b ]---