skbuff: skb_over_panic: text:ffffffff8725d400 len:693 put:3 head:ffff88802091c000 data:ffff88802091c00e tail:0x2c3 end:0x2c0 dev:bond0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:110! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17576 Comm: syz-executor.4 Not tainted 5.12.0-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:110 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 80 4c 68 8a ff 74 24 10 ff 74 24 20 e8 85 6c c4 ff <0f> 0b e8 ce 9c 63 f8 4c 8b 64 24 18 e8 f4 8e a8 f8 48 c7 c1 c0 58 RSP: 0018:ffffc9000221f7b0 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff88806c7c9c80 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815cc9a5 RDI: fffff52000443ee8 RBP: ffffffff8a685900 R08: 0000000000000086 R09: 0000000000000000 R10: ffffffff815c680e R11: 0000000000000000 R12: ffffffff8725d400 R13: 0000000000000003 R14: ffff888146220000 R15: 00000000000002c0 FS: 00007fae362e8700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fae362c7718 CR3: 0000000027623000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic net/core/skbuff.c:115 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1915 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+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 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:00007fae362e8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665d9 RDX: 03fffffffffffeed RSI: 0000000020001380 RDI: 0000000000000007 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007ffcacef8c0f R14: 00007fae362e8300 R15: 0000000000022000 Modules linked in: ---[ end trace 5d221971ad2a07a6 ]--- RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:110 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 80 4c 68 8a ff 74 24 10 ff 74 24 20 e8 85 6c c4 ff <0f> 0b e8 ce 9c 63 f8 4c 8b 64 24 18 e8 f4 8e a8 f8 48 c7 c1 c0 58 RSP: 0018:ffffc9000221f7b0 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff88806c7c9c80 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815cc9a5 RDI: fffff52000443ee8 RBP: ffffffff8a685900 R08: 0000000000000086 R09: 0000000000000000 R10: ffffffff815c680e R11: 0000000000000000 R12: ffffffff8725d400 R13: 0000000000000003 R14: ffff888146220000 R15: 00000000000002c0 FS: 00007fae362e8700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e71ace000 CR3: 0000000027623000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400