[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.167' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 78.842844][ C1] ------------[ cut here ]------------ [ 78.848570][ C1] WARNING: CPU: 1 PID: 8388 at kernel/bpf/helpers.c:712 bpf_bprintf_prepare+0xeba/0x10b0 [ 78.858820][ C1] Modules linked in: [ 78.862838][ C1] CPU: 1 PID: 8388 Comm: syz-executor545 Not tainted 5.12.0-rc7-syzkaller #0 [ 78.871631][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.881756][ C1] RIP: 0010:bpf_bprintf_prepare+0xeba/0x10b0 [ 78.887820][ C1] Code: c6 e8 3a 4d 5e 02 83 c0 01 48 98 48 01 c5 48 89 6c 24 08 e8 78 0a ed ff 8d 6b 02 83 44 24 10 01 e9 d6 f5 ff ff e8 66 0a ed ff <0f> 0b 65 ff 0d fd 12 7c 7e bf 01 00 00 00 41 bc f0 ff ff ff e8 dd [ 78.907546][ C1] RSP: 0018:ffffc90000dc0290 EFLAGS: 00010246 [ 78.913742][ C1] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000100 [ 78.921763][ C1] RDX: ffff888013b88000 RSI: ffffffff8186ebfa RDI: 0000000000000003 [ 78.929787][ C1] RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001 [ 78.937905][ C1] R10: ffffffff8186e794 R11: 0000000000000000 R12: ffffc90000dc03c0 [ 78.945968][ C1] R13: 0000000000000100 R14: ffffc90000dc0478 R15: 0000000000000003 [ 78.954021][ C1] FS: 00000000013d1300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 78.963033][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.970013][ C1] CR2: 00000000004b00f0 CR3: 0000000014d6b000 CR4: 00000000001506e0 [ 78.978172][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.986253][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.994306][ C1] Call Trace: [ 78.997605][ C1] [ 79.000489][ C1] ? bpf_bprintf_cleanup+0x60/0x60 [ 79.005818][ C1] bpf_trace_printk+0xab/0x3a0 [ 79.010617][ C1] ? bpf_probe_read_compat_str+0x190/0x190 [ 79.016487][ C1] ? lock_release+0x720/0x720 [ 79.021195][ C1] ? rcu_read_lock_sched_held+0x3a/0x70 [ 79.026845][ C1] ? kmem_cache_free+0x62f/0x740 [ 79.031816][ C1] ? kfree_skbmem+0xef/0x1b0 [ 79.036480][ C1] bpf_prog_0605f9f479290f07+0x2f/0xfd8 [ 79.042040][ C1] bpf_trace_run2+0x12f/0x390 [ 79.046789][ C1] ? __bpf_trace_bpf_trace_printk+0xc0/0xc0 [ 79.052782][ C1] __bpf_trace_net_dev_start_xmit+0xb1/0xe0 [ 79.058699][ C1] ? __bpf_trace_tcp_event_sk_skb+0xe0/0xe0 [ 79.064648][ C1] ? dev_queue_xmit_nit+0x803/0xa90 [ 79.069898][ C1] dev_hard_start_xmit+0x57b/0x920 [ 79.075120][ C1] sch_direct_xmit+0x2e1/0xbd0 [ 79.079906][ C1] ? dev_watchdog+0xd00/0xd00 [ 79.084637][ C1] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 79.090929][ C1] __qdisc_run+0x4ba/0x15f0 [ 79.095508][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.101790][ C1] __dev_queue_xmit+0x142e/0x2e30 [ 79.106913][ C1] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 79.112218][ C1] ? __ip6_finish_output+0x4c1/0xe10 [ 79.117634][ C1] ? mark_held_locks+0x9f/0xe0 [ 79.122570][ C1] ? rcu_read_lock_bh_held+0x25/0x60 [ 79.127896][ C1] ? ip6_finish_output2+0xdc8/0x1700 [ 79.133276][ C1] ip6_finish_output2+0x911/0x1700 [ 79.138442][ C1] __ip6_finish_output+0x4c1/0xe10 [ 79.143625][ C1] ip6_finish_output+0x35/0x200 [ 79.148540][ C1] ip6_output+0x1e4/0x530 [ 79.153033][ C1] ndisc_send_skb+0xa99/0x1750 [ 79.157904][ C1] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0 [ 79.163897][ C1] ? ndisc_parse_options.part.0+0x510/0x510 [ 79.169847][ C1] ? memcpy+0x39/0x60 [ 79.173892][ C1] ? __ndisc_fill_addr_option+0xca/0x110 [ 79.179573][ C1] ndisc_send_rs+0x12e/0x6f0 [ 79.184262][ C1] addrconf_rs_timer+0x3f2/0x820 [ 79.189233][ C1] ? ipv6_get_lladdr+0x480/0x480 [ 79.194280][ C1] ? ipv6_get_lladdr+0x480/0x480 [ 79.199240][ C1] call_timer_fn+0x1a5/0x6b0 [ 79.203944][ C1] ? add_timer_on+0x4a0/0x4a0 [ 79.208658][ C1] ? lock_downgrade+0x6e0/0x6e0 [ 79.213567][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 79.219883][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 79.225187][ C1] ? ipv6_get_lladdr+0x480/0x480 [ 79.230148][ C1] __run_timers.part.0+0x67c/0xa50 [ 79.235332][ C1] ? call_timer_fn+0x6b0/0x6b0 [ 79.240118][ C1] ? lapic_next_event+0x4d/0x80 [ 79.245036][ C1] ? kvm_sched_clock_read+0x14/0x40 [ 79.250282][ C1] ? sched_clock+0x2a/0x40 [ 79.254770][ C1] ? sched_clock_cpu+0x18/0x1f0 [ 79.259647][ C1] run_timer_softirq+0xb3/0x1d0 [ 79.264577][ C1] __do_softirq+0x29b/0x9f6 [ 79.269164][ C1] irq_exit_rcu+0x134/0x200 [ 79.273761][ C1] sysvec_apic_timer_interrupt+0x93/0xc0 [ 79.279435][ C1] [ 79.282451][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 79.288468][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 [ 79.294979][ C1] Code: 74 24 10 e8 6a bd 4d f8 48 89 ef e8 a2 73 4e f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 83 41 42 f8 65 8b 05 4c 07 f6 76 85 c0 74 0a 5b 5d c3 e8 f0 fc [ 79.314719][ C1] RSP: 0018:ffffc9000111f9e8 EFLAGS: 00000206 [ 79.320814][ C1] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1b8bb31 [ 79.328903][ C1] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 [ 79.337000][ C1] RBP: ffffffff8bfef320 R08: 0000000000000001 R09: 0000000000000001 [ 79.345085][ C1] R10: ffffffff8179e5a8 R11: 0000000000000000 R12: 0000000000000002 [ 79.353173][ C1] R13: 0000000000000293 R14: ffff888013b88000 R15: 0000000000000003 [ 79.361182][ C1] ? trace_hardirqs_on+0x38/0x1c0 [ 79.366292][ C1] bpf_trace_printk+0x172/0x3a0 [ 79.371161][ C1] ? bpf_probe_read_compat_str+0x190/0x190 [ 79.377037][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 79.382280][ C1] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 79.388067][ C1] ? ktime_get+0x30b/0x470 [ 79.392643][ C1] ? bpf_test_timer_enter+0xb9/0x150 [ 79.397970][ C1] bpf_prog_0605f9f479290f07+0x2f/0x7e8 [ 79.403575][ C1] bpf_test_run+0x45f/0xaa0 [ 79.408113][ C1] ? bpf_test_timer_continue+0x420/0x420 [ 79.413799][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 79.420076][ C1] ? __phys_addr+0xc4/0x140 [ 79.424666][ C1] ? eth_type_trans+0x360/0x690 [ 79.429542][ C1] ? eth_gro_receive+0x870/0x870 [ 79.434559][ C1] ? __build_skb+0x50/0x60 [ 79.439002][ C1] bpf_prog_test_run_skb+0xabc/0x1c70 [ 79.444487][ C1] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 79.450242][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.456618][ C1] ? __fget_light+0x215/0x280 [ 79.461340][ C1] ? __do_sys_bpf+0x20f2/0x4f40 [ 79.466307][ C1] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 79.472086][ C1] __do_sys_bpf+0x218b/0x4f40 [ 79.476856][ C1] ? bpf_link_get_from_fd+0x110/0x110 [ 79.482276][ C1] ? find_held_lock+0x2d/0x110 [ 79.487119][ C1] ? __context_tracking_exit+0xb8/0xe0 [ 79.492698][ C1] ? lock_downgrade+0x6e0/0x6e0 [ 79.497592][ C1] ? syscall_enter_from_user_mode+0x27/0x70 [ 79.503713][ C1] do_syscall_64+0x2d/0x70 [ 79.508179][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 79.514142][ C1] RIP: 0033:0x43ff49 [ 79.518051][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 [ 79.537760][ C1] RSP: 002b:00007fffdb8cfd68 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 79.546296][ C1] RAX: ffffffffffffffda RBX: 0000000000011ca4 RCX: 000000000043ff49 [ 79.554348][ C1] RDX: 0000000000000048 RSI: 0000000020000180 RDI: 000000000000000a [ 79.562411][ C1] RBP: 0000000000000000 R08: 00007fffdb8cff08 R09: 00007fffdb8cff08 [ 79.570493][ C1] R10: 00007fffdb8cff08 R11: 0000000000000246 R12: 00007fffdb8cfd7c [ 79.578550][ C1] R13: 431bde82d7b634db R14: 00000000004b0018 R15: 0000000000400488 [ 79.586670][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 79.593264][ C1] CPU: 1 PID: 8388 Comm: syz-executor545 Not tainted 5.12.0-rc7-syzkaller #0 [ 79.602060][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.612114][ C1] Call Trace: [ 79.615388][ C1] [ 79.618247][ C1] dump_stack+0x141/0x1d7 [ 79.622590][ C1] panic+0x306/0x73d [ 79.626496][ C1] ? __warn_printk+0xf3/0xf3 [ 79.631150][ C1] ? __warn.cold+0x1a/0x44 [ 79.635575][ C1] ? bpf_bprintf_prepare+0xeba/0x10b0 [ 79.640955][ C1] __warn.cold+0x35/0x44 [ 79.645211][ C1] ? bpf_bprintf_prepare+0xeba/0x10b0 [ 79.650611][ C1] report_bug+0x1bd/0x210 [ 79.654962][ C1] handle_bug+0x3c/0x60 [ 79.659128][ C1] exc_invalid_op+0x14/0x40 [ 79.663672][ C1] asm_exc_invalid_op+0x12/0x20 [ 79.668549][ C1] RIP: 0010:bpf_bprintf_prepare+0xeba/0x10b0 [ 79.674537][ C1] Code: c6 e8 3a 4d 5e 02 83 c0 01 48 98 48 01 c5 48 89 6c 24 08 e8 78 0a ed ff 8d 6b 02 83 44 24 10 01 e9 d6 f5 ff ff e8 66 0a ed ff <0f> 0b 65 ff 0d fd 12 7c 7e bf 01 00 00 00 41 bc f0 ff ff ff e8 dd [ 79.694151][ C1] RSP: 0018:ffffc90000dc0290 EFLAGS: 00010246 [ 79.700227][ C1] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000100 [ 79.708216][ C1] RDX: ffff888013b88000 RSI: ffffffff8186ebfa RDI: 0000000000000003 [ 79.716193][ C1] RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001 [ 79.724194][ C1] R10: ffffffff8186e794 R11: 0000000000000000 R12: ffffc90000dc03c0 [ 79.732166][ C1] R13: 0000000000000100 R14: ffffc90000dc0478 R15: 0000000000000003 [ 79.740162][ C1] ? bpf_bprintf_prepare+0xa54/0x10b0 [ 79.745570][ C1] ? bpf_bprintf_prepare+0xeba/0x10b0 [ 79.750975][ C1] ? bpf_bprintf_cleanup+0x60/0x60 [ 79.756115][ C1] bpf_trace_printk+0xab/0x3a0 [ 79.760888][ C1] ? bpf_probe_read_compat_str+0x190/0x190 [ 79.766706][ C1] ? lock_release+0x720/0x720 [ 79.771401][ C1] ? rcu_read_lock_sched_held+0x3a/0x70 [ 79.776958][ C1] ? kmem_cache_free+0x62f/0x740 [ 79.781900][ C1] ? kfree_skbmem+0xef/0x1b0 [ 79.786506][ C1] bpf_prog_0605f9f479290f07+0x2f/0xfd8 [ 79.792065][ C1] bpf_trace_run2+0x12f/0x390 [ 79.796749][ C1] ? __bpf_trace_bpf_trace_printk+0xc0/0xc0 [ 79.802672][ C1] __bpf_trace_net_dev_start_xmit+0xb1/0xe0 [ 79.808584][ C1] ? __bpf_trace_tcp_event_sk_skb+0xe0/0xe0 [ 79.814493][ C1] ? dev_queue_xmit_nit+0x803/0xa90 [ 79.819721][ C1] dev_hard_start_xmit+0x57b/0x920 [ 79.824853][ C1] sch_direct_xmit+0x2e1/0xbd0 [ 79.829633][ C1] ? dev_watchdog+0xd00/0xd00 [ 79.834336][ C1] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 79.840618][ C1] __qdisc_run+0x4ba/0x15f0 [ 79.845141][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.851420][ C1] __dev_queue_xmit+0x142e/0x2e30 [ 79.856482][ C1] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 79.862307][ C1] ? __ip6_finish_output+0x4c1/0xe10 [ 79.867633][ C1] ? mark_held_locks+0x9f/0xe0 [ 79.872407][ C1] ? rcu_read_lock_bh_held+0x25/0x60 [ 79.877706][ C1] ? ip6_finish_output2+0xdc8/0x1700 [ 79.883103][ C1] ip6_finish_output2+0x911/0x1700 [ 79.888274][ C1] __ip6_finish_output+0x4c1/0xe10 [ 79.893425][ C1] ip6_finish_output+0x35/0x200 [ 79.898299][ C1] ip6_output+0x1e4/0x530 [ 79.902649][ C1] ndisc_send_skb+0xa99/0x1750 [ 79.907440][ C1] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0 [ 79.913350][ C1] ? ndisc_parse_options.part.0+0x510/0x510 [ 79.919281][ C1] ? memcpy+0x39/0x60 [ 79.923276][ C1] ? __ndisc_fill_addr_option+0xca/0x110 [ 79.928962][ C1] ndisc_send_rs+0x12e/0x6f0 [ 79.933564][ C1] addrconf_rs_timer+0x3f2/0x820 [ 79.938513][ C1] ? ipv6_get_lladdr+0x480/0x480 [ 79.943489][ C1] ? ipv6_get_lladdr+0x480/0x480 [ 79.948451][ C1] call_timer_fn+0x1a5/0x6b0 [ 79.953098][ C1] ? add_timer_on+0x4a0/0x4a0 [ 79.957798][ C1] ? lock_downgrade+0x6e0/0x6e0 [ 79.962673][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 79.968947][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 79.974155][ C1] ? ipv6_get_lladdr+0x480/0x480 [ 79.979109][ C1] __run_timers.part.0+0x67c/0xa50 [ 79.984261][ C1] ? call_timer_fn+0x6b0/0x6b0 [ 79.989031][ C1] ? lapic_next_event+0x4d/0x80 [ 79.993896][ C1] ? kvm_sched_clock_read+0x14/0x40 [ 79.999101][ C1] ? sched_clock+0x2a/0x40 [ 80.003520][ C1] ? sched_clock_cpu+0x18/0x1f0 [ 80.008388][ C1] run_timer_softirq+0xb3/0x1d0 [ 80.013250][ C1] __do_softirq+0x29b/0x9f6 [ 80.017784][ C1] irq_exit_rcu+0x134/0x200 [ 80.022305][ C1] sysvec_apic_timer_interrupt+0x93/0xc0 [ 80.027952][ C1] [ 80.030886][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 80.036880][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 [ 80.043321][ C1] Code: 74 24 10 e8 6a bd 4d f8 48 89 ef e8 a2 73 4e f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 83 41 42 f8 65 8b 05 4c 07 f6 76 85 c0 74 0a 5b 5d c3 e8 f0 fc [ 80.062936][ C1] RSP: 0018:ffffc9000111f9e8 EFLAGS: 00000206 [ 80.069010][ C1] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1b8bb31 [ 80.077002][ C1] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 [ 80.084989][ C1] RBP: ffffffff8bfef320 R08: 0000000000000001 R09: 0000000000000001 [ 80.092990][ C1] R10: ffffffff8179e5a8 R11: 0000000000000000 R12: 0000000000000002 [ 80.101009][ C1] R13: 0000000000000293 R14: ffff888013b88000 R15: 0000000000000003 [ 80.108989][ C1] ? trace_hardirqs_on+0x38/0x1c0 [ 80.114043][ C1] bpf_trace_printk+0x172/0x3a0 [ 80.118899][ C1] ? bpf_probe_read_compat_str+0x190/0x190 [ 80.124726][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 80.129956][ C1] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 80.135686][ C1] ? ktime_get+0x30b/0x470 [ 80.140119][ C1] ? bpf_test_timer_enter+0xb9/0x150 [ 80.145453][ C1] bpf_prog_0605f9f479290f07+0x2f/0x7e8 [ 80.151022][ C1] bpf_test_run+0x45f/0xaa0 [ 80.155575][ C1] ? bpf_test_timer_continue+0x420/0x420 [ 80.161330][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 80.167606][ C1] ? __phys_addr+0xc4/0x140 [ 80.172211][ C1] ? eth_type_trans+0x360/0x690 [ 80.177079][ C1] ? eth_gro_receive+0x870/0x870 [ 80.182034][ C1] ? __build_skb+0x50/0x60 [ 80.186471][ C1] bpf_prog_test_run_skb+0xabc/0x1c70 [ 80.191873][ C1] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 80.197630][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 80.203900][ C1] ? __fget_light+0x215/0x280 [ 80.208590][ C1] ? __do_sys_bpf+0x20f2/0x4f40 [ 80.213452][ C1] ? bpf_prog_test_run_raw_tp+0x630/0x630 [ 80.219175][ C1] __do_sys_bpf+0x218b/0x4f40 [ 80.223865][ C1] ? bpf_link_get_from_fd+0x110/0x110 [ 80.229250][ C1] ? find_held_lock+0x2d/0x110 [ 80.234054][ C1] ? __context_tracking_exit+0xb8/0xe0 [ 80.239541][ C1] ? lock_downgrade+0x6e0/0x6e0 [ 80.244422][ C1] ? syscall_enter_from_user_mode+0x27/0x70 [ 80.250336][ C1] do_syscall_64+0x2d/0x70 [ 80.254759][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 80.260674][ C1] RIP: 0033:0x43ff49 [ 80.264576][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 [ 80.284203][ C1] RSP: 002b:00007fffdb8cfd68 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 80.292634][ C1] RAX: ffffffffffffffda RBX: 0000000000011ca4 RCX: 000000000043ff49 [ 80.300631][ C1] RDX: 0000000000000048 RSI: 0000000020000180 RDI: 000000000000000a [ 80.308612][ C1] RBP: 0000000000000000 R08: 00007fffdb8cff08 R09: 00007fffdb8cff08 [ 80.316586][ C1] R10: 00007fffdb8cff08 R11: 0000000000000246 R12: 00007fffdb8cfd7c [ 80.324562][ C1] R13: 431bde82d7b634db R14: 00000000004b0018 R15: 0000000000400488 [ 80.333276][ C1] Kernel Offset: disabled [ 80.337702][ C1] Rebooting in 86400 seconds..