------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:1459! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7977 Comm: syz-executor181 Not tainted 4.20.0+ #13 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:pskb_expand_head+0xbb0/0x1080 net/core/skbuff.c:1459 Code: 8b b5 e0 fe ff ff 48 85 f6 0f 84 4d fe ff ff e8 a6 ca 68 fb 4d 8d 74 24 ff e9 3e fe ff ff e8 97 ca 68 fb 0f 0b e8 90 ca 68 fb <0f> 0b e8 89 ca 68 fb 81 8d 10 ff ff ff 00 20 00 00 e9 0f f6 ff ff RSP: 0018:ffff88809093f5e0 EFLAGS: 00010293 RAX: ffff8880970b4480 RBX: ffff8880936c3800 RCX: ffffffff86192268 RDX: 0000000000000000 RSI: ffffffff86192ca0 RDI: 0000000000000005 RBP: ffff88809093f720 R08: ffff8880970b4480 R09: ffffed10126d871b R10: ffffed10126d871a R11: ffff8880936c38d7 R12: ffff8880936c38bc R13: 000000000000003f R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f9828c70700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 0000000089158000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __pskb_pull_tail+0x13a/0x1740 net/core/skbuff.c:1896 pskb_may_pull include/linux/skbuff.h:2188 [inline] ip6_datagram_recv_specific_ctl+0x1751/0x1bd0 net/ipv6/datagram.c:707 ip6_datagram_recv_ctl+0x34/0x40 net/ipv6/datagram.c:736 rawv6_recvmsg+0xc43/0xe90 net/ipv6/raw.c:520 sock_common_recvmsg+0x13f/0x2b0 net/core/sock.c:2975 sock_recvmsg_nosec net/socket.c:794 [inline] sock_recvmsg net/socket.c:801 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:797 __sys_recvfrom+0x30b/0x5d0 net/socket.c:1845 __do_sys_recvfrom net/socket.c:1863 [inline] __se_sys_recvfrom net/socket.c:1859 [inline] __x64_sys_recvfrom+0xe1/0x1a0 net/socket.c:1859 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445809 Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9828c6fda8 EFLAGS: 00000216 ORIG_RAX: 000000000000002d RAX: ffffffffffffffda RBX: 00000000006dac38 RCX: 0000000000445809 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000006dac30 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000216 R12: 00000000006dac3c R13: 00007fffb20ee30f R14: 00007f9828c709c0 R15: 00000000006dad2c Modules linked in: ---[ end trace a45e4ed51e9b6716 ]--- RIP: 0010:pskb_expand_head+0xbb0/0x1080 net/core/skbuff.c:1459 Code: 8b b5 e0 fe ff ff 48 85 f6 0f 84 4d fe ff ff e8 a6 ca 68 fb 4d 8d 74 24 ff e9 3e fe ff ff e8 97 ca 68 fb 0f 0b e8 90 ca 68 fb <0f> 0b e8 89 ca 68 fb 81 8d 10 ff ff ff 00 20 00 00 e9 0f f6 ff ff RSP: 0018:ffff88809093f5e0 EFLAGS: 00010293 RAX: ffff8880970b4480 RBX: ffff8880936c3800 RCX: ffffffff86192268 RDX: 0000000000000000 RSI: ffffffff86192ca0 RDI: 0000000000000005 RBP: ffff88809093f720 R08: ffff8880970b4480 R09: ffffed10126d871b R10: ffffed10126d871a R11: ffff8880936c38d7 R12: ffff8880936c38bc R13: 000000000000003f R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f9828c70700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 0000000089158000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400