kernel BUG at net/core/skbuff.c:110! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4267 Comm: syz-executor.4 Not tainted 5.10.87-syzkaller-00611-gc4d08791d941 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106 Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 1c b3 89 fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 RSP: 0018:ffffc90002d7f1b0 EFLAGS: 00010282 RAX: 000000000000008f RBX: ffffffff85874b20 RCX: 0349a7d602116d00 RDX: ffffc900053dc000 RSI: 0000000000001dab RDI: 0000000000001dac RBP: ffffc90002d7f1f8 R08: ffffffff815451a8 R09: ffffed103ee2a5d8 R10: ffffed103ee2a5d8 R11: 0000000000000000 R12: ffff888164a7b088 R13: 00000000000100af R14: 0000000000000680 R15: dffffc0000000000 FS: 00007f622e576700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31025000 CR3: 000000010bbe0000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic+0x2c/0x30 net/core/skbuff.c:115 skb_put+0x205/0x210 net/core/skbuff.c:1877 __ip6_append_data+0x2ad6/0x3d80 net/ipv6/ip6_output.c:1680 ip6_append_data+0x1ab/0x2d0 net/ipv6/ip6_output.c:1829 rawv6_sendmsg+0x1e4f/0x2cd0 net/ipv6/raw.c:949 inet_sendmsg+0xa1/0xc0 net/ipv4/af_inet.c:821 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x5b9/0x910 net/socket.c:2343 ___sys_sendmsg net/socket.c:2397 [inline] __sys_sendmmsg+0x5ae/0x7f0 net/socket.c:2487 __do_sys_sendmmsg net/socket.c:2516 [inline] __se_sys_sendmmsg net/socket.c:2513 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2513 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f622f3ffe99 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f622e576168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f622f512f60 RCX: 00007f622f3ffe99 RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 00007f622f459ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000024048000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd23b5a4df R14: 00007f622e576300 R15: 0000000000022000 Modules linked in: ---[ end trace 001cb7e3a4301ebd ]--- RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106 Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 1c b3 89 fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 RSP: 0018:ffffc90002d7f1b0 EFLAGS: 00010282 RAX: 000000000000008f RBX: ffffffff85874b20 RCX: 0349a7d602116d00 RDX: ffffc900053dc000 RSI: 0000000000001dab RDI: 0000000000001dac RBP: ffffc90002d7f1f8 R08: ffffffff815451a8 R09: ffffed103ee2a5d8 R10: ffffed103ee2a5d8 R11: 0000000000000000 R12: ffff888164a7b088 R13: 00000000000100af R14: 0000000000000680 R15: dffffc0000000000 FS: 00007f622e576700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31025000 CR3: 000000010bbe0000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400