kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 20536 Comm: syz-executor.3 Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:109
Code: f8 4c 8b 4c 24 10 8b 4b 70 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 40 bd 66 8a ff 74 24 10 ff 74 24 20 e8 ed 77 c4 ff <0f> 0b e8 79 38 74 f8 4c 8b 64 24 18 e8 7f 95 b7 f8 48 c7 c1 80 c9
RSP: 0018:ffffc9000175f7b8 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff88802e289dc0 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815c0d35 RDI: fffff520002ebee9
RBP: ffffffff8a66c9c0 R08: 0000000000000086 R09: 0000000000000000
R10: ffffffff815b9ace R11: 0000000000000000 R12: ffffffff87194930
R13: 0000000000000003 R14: ffff888144244000 R15: 00000000000002c0
FS:  00007f126b085700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000543038 CR3: 00000000244ae000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_over_panic net/core/skbuff.c:114 [inline]
 skb_put.cold+0x24/0x24 net/core/skbuff.c:1914
 llc_pdu_init_as_xid_cmd include/net/llc_pdu.h:377 [inline]
 llc_sap_action_send_xid_c+0x240/0x380 net/llc/llc_s_ac.c:84
 llc_exec_sap_trans_actions net/llc/llc_sap.c:153 [inline]
 llc_sap_next_state net/llc/llc_sap.c:182 [inline]
 llc_sap_state_process+0x22a/0x4f0 net/llc/llc_sap.c:209
 llc_ui_sendmsg+0x9ee/0x1040 net/llc/af_llc.c:964
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x331/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmmsg+0x195/0x470 net/socket.c:2490
 __do_sys_sendmmsg net/socket.c:2519 [inline]
 __se_sys_sendmmsg net/socket.c:2516 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2516
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465f69
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:00007f126b085188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465f69
RDX: 0000000000000001 RSI: 0000000020000800 RDI: 0000000000000005
RBP: 00000000004bfa8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007fffe8ff5f9f R14: 00007f126b085300 R15: 0000000000022000
Modules linked in:
---[ end trace ffd5da8618e9528f ]---
RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:109
Code: f8 4c 8b 4c 24 10 8b 4b 70 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 40 bd 66 8a ff 74 24 10 ff 74 24 20 e8 ed 77 c4 ff <0f> 0b e8 79 38 74 f8 4c 8b 64 24 18 e8 7f 95 b7 f8 48 c7 c1 80 c9
RSP: 0018:ffffc9000175f7b8 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff88802e289dc0 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815c0d35 RDI: fffff520002ebee9
RBP: ffffffff8a66c9c0 R08: 0000000000000086 R09: 0000000000000000
R10: ffffffff815b9ace R11: 0000000000000000 R12: ffffffff87194930
R13: 0000000000000003 R14: ffff888144244000 R15: 00000000000002c0
FS:  00007f126b085700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d22000 CR3: 00000000244ae000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400