Starting getty on tty2-tty6 if dbus and logind are not available... Starting OpenBSD Secure Shell server... [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. Starting Load/Save RF Kill Switch Status... [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.96' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.512440][ T8419] skbuff: skb_over_panic: text:ffffffff8718af60 len:692 put:3 head:ffff888017e8f000 data:ffff888017e8f00e tail:0x2c2 end:0x2c0 dev:bond0 [ 79.528105][ T8419] ------------[ cut here ]------------ [ 79.535342][ T8419] kernel BUG at net/core/skbuff.c:109! [ 79.540875][ T8419] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 79.546938][ T8419] CPU: 0 PID: 8419 Comm: syz-executor321 Not tainted 5.12.0-rc4-syzkaller #0 [ 79.555772][ T8419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.565815][ T8419] RIP: 0010:skb_panic+0x16c/0x16e [ 79.570848][ T8419] 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 de 65 8a ff 74 24 10 ff 74 24 20 e8 e3 c2 c4 ff <0f> 0b e8 5e 67 72 f8 4c 8b 64 24 18 e8 24 6c b6 f8 48 c7 c1 c0 ea [ 79.590474][ T8419] RSP: 0018:ffffc90001bdf7b8 EFLAGS: 00010282 [ 79.596633][ T8419] RAX: 0000000000000086 RBX: ffff888021055500 RCX: 0000000000000000 [ 79.604627][ T8419] RDX: ffff88801e223880 RSI: ffffffff815c5205 RDI: fffff5200037bee9 [ 79.612770][ T8419] RBP: ffffffff8a65eb00 R08: 0000000000000086 R09: 0000000000000000 [ 79.620755][ T8419] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffffffff8718af60 [ 79.628825][ T8419] R13: 0000000000000003 R14: ffff88814421c000 R15: 00000000000002c0 [ 79.636800][ T8419] FS: 0000000000d7c300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 79.645824][ T8419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.652635][ T8419] CR2: 00007f272ea5c000 CR3: 0000000020a6d000 CR4: 00000000001506f0 [ 79.660605][ T8419] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.668576][ T8419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.676536][ T8419] Call Trace: [ 79.679806][ T8419] ? llc_sap_action_send_xid_c+0x240/0x380 [ 79.685611][ T8419] ? llc_sap_action_send_ui+0x2c0/0x2c0 [ 79.691145][ T8419] skb_put.cold+0x24/0x24 [ 79.695834][ T8419] llc_sap_action_send_xid_c+0x240/0x380 [ 79.701468][ T8419] llc_sap_state_process+0x22a/0x4f0 [ 79.706947][ T8419] llc_ui_sendmsg+0x9ee/0x1040 [ 79.712371][ T8419] ? llc_ui_bind+0xd60/0xd60 [ 79.716970][ T8419] ? aa_af_perm+0x230/0x230 [ 79.721459][ T8419] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.727721][ T8419] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.733967][ T8419] ? llc_ui_bind+0xd60/0xd60 [ 79.738553][ T8419] sock_sendmsg+0xcf/0x120 [ 79.742962][ T8419] ____sys_sendmsg+0x331/0x810 [ 79.747739][ T8419] ? kernel_sendmsg+0x50/0x50 [ 79.752414][ T8419] ? do_recvmmsg+0x6d0/0x6d0 [ 79.757035][ T8419] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 79.763016][ T8419] ___sys_sendmsg+0xf3/0x170 [ 79.771272][ T8419] ? sendmsg_copy_msghdr+0x160/0x160 [ 79.776547][ T8419] ? lock_chain_count+0x20/0x20 [ 79.781515][ T8419] ? lock_chain_count+0x20/0x20 [ 79.786393][ T8419] ? llc_ui_connect+0x4fb/0xcb0 [ 79.791273][ T8419] ? lock_downgrade+0x6e0/0x6e0 [ 79.796116][ T8419] ? rwlock_bug.part.0+0x90/0x90 [ 79.801044][ T8419] ? __local_bh_enable_ip+0xa0/0x120 [ 79.806820][ T8419] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.813068][ T8419] ? __fget_light+0x215/0x280 [ 79.817752][ T8419] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 79.823983][ T8419] __sys_sendmmsg+0x195/0x470 [ 79.828652][ T8419] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 79.833678][ T8419] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 79.839650][ T8419] ? find_held_lock+0x2d/0x110 [ 79.844397][ T8419] ? __context_tracking_exit+0xb8/0xe0 [ 79.849846][ T8419] ? lock_downgrade+0x6e0/0x6e0 [ 79.854684][ T8419] __x64_sys_sendmmsg+0x99/0x100 [ 79.859612][ T8419] ? syscall_enter_from_user_mode+0x27/0x70 [ 79.865524][ T8419] do_syscall_64+0x2d/0x70 [ 79.869940][ T8419] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 79.875829][ T8419] RIP: 0033:0x43f329 [ 79.879707][ T8419] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 79.899297][ T8419] RSP: 002b:00007fff3245d438 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 79.907709][ T8419] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f329 [ 79.915790][ T8419] RDX: 0000000000000006 RSI: 0000000020005bc0 RDI: 0000000000000003 [ 79.923837][ T8419] RBP: 0000000000403310 R08: 0000000000400488 R09: 0000000000400488 [ 79.931807][ T8419] R10: 0000000004000000 R11: 0000000000000246 R12: 00000000004033a0 [ 79.939773][ T8419] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 79.947747][ T8419] Modules linked in: [ 79.953304][ T8419] ---[ end trace 5ec9826942a05662 ]--- [ 79.958781][ T8419] RIP: 0010:skb_panic+0x16c/0x16e [ 79.964661][ T8419] 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 de 65 8a ff 74 24 10 ff 74 24 20 e8 e3 c2 c4 ff <0f> 0b e8 5e 67 72 f8 4c 8b 64 24 18 e8 24 6c b6 f8 48 c7 c1 c0 ea [ 79.984526][ T8419] RSP: 0018:ffffc90001bdf7b8 EFLAGS: 00010282 [ 79.990615][ T8419] RAX: 0000000000000086 RBX: ffff888021055500 RCX: 0000000000000000 [ 79.998707][ T8419] RDX: ffff88801e223880 RSI: ffffffff815c5205 RDI: fffff5200037bee9 [ 80.006839][ T8419] RBP: ffffffff8a65eb00 R08: 0000000000000086 R09: 0000000000000000 [ 80.015164][ T8419] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffffffff8718af60 [ 80.023225][ T8419] R13: 0000000000000003 R14: ffff88814421c000 R15: 00000000000002c0 [ 80.031285][ T8419] FS: 0000000000d7c300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 80.040413][ T8419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.047058][ T8419] CR2: 0000562aeecf0160 CR3: 0000000020a6d000 CR4: 00000000001506e0 [ 80.055121][ T8419] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.063152][ T8419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.071148][ T8419] Kernel panic - not syncing: Fatal exception [ 80.077881][ T8419] Kernel Offset: disabled [ 80.082206][ T8419] Rebooting in 86400 seconds..