[ 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 ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ 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. [ 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.199' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.914228][ T3202] hid-generic 0000:0000:0000.0001: ignoring exceeding usage max [ 59.943903][ T3202] hid-generic 0000:0000:0000.0001: hidraw0: HID v0.00 Device [syz1] on sz1 [ 60.087178][ T7202] INFO: trying to register non-static key. [ 60.093141][ T7202] the code is fine but needs lockdep annotation. [ 60.099460][ T7202] turning off the locking correctness validator. [ 60.105788][ T7202] CPU: 1 PID: 7202 Comm: syz-executor152 Not tainted 5.6.0-next-20200411-syzkaller #0 [ 60.115301][ T7202] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.125334][ T7202] Call Trace: [ 60.128604][ T7202] dump_stack+0x188/0x20d [ 60.132926][ T7202] register_lock_class+0x1664/0x1760 [ 60.138427][ T7202] ? is_dynamic_key+0x1a0/0x1a0 [ 60.143276][ T7202] __lock_acquire+0x104/0x4c50 [ 60.148076][ T7202] ? lock_is_held_type+0x350/0x350 [ 60.153270][ T7202] ? mark_held_locks+0xe0/0xe0 [ 60.158210][ T7202] ? finish_task_switch+0x147/0x750 [ 60.163468][ T7202] lock_acquire+0x1f2/0x8f0 [ 60.167976][ T7202] ? prepare_to_wait_event+0x5b/0x650 [ 60.173563][ T7202] ? lock_release+0x800/0x800 [ 60.178490][ T7202] ? finish_task_switch+0x1dc/0x750 [ 60.186510][ T7202] ? __schedule+0x93f/0x1ff0 [ 60.191269][ T7202] _raw_spin_lock_irqsave+0x8c/0xbf [ 60.196452][ T7202] ? prepare_to_wait_event+0x5b/0x650 [ 60.202018][ T7202] prepare_to_wait_event+0x5b/0x650 [ 60.207213][ T7202] ? do_wait_intr_irq+0x280/0x280 [ 60.212217][ T7202] uhid_char_read+0x321/0x6c0 [ 60.217040][ T7202] ? uhid_dev_create+0xb70/0xb70 [ 60.221957][ T7202] ? finish_wait+0x260/0x260 [ 60.226874][ T7202] do_iter_read+0x483/0x650 [ 60.231354][ T7202] vfs_readv+0xf0/0x160 [ 60.235486][ T7202] ? compat_rw_copy_check_uvector+0x4a0/0x4a0 [ 60.241527][ T7202] ? rcu_read_lock_held_common+0x130/0x130 [ 60.247415][ T7202] ? do_dup2+0x520/0x520 [ 60.251648][ T7202] ? __schedule+0x93f/0x1ff0 [ 60.256294][ T7202] ? __fget_light+0x20e/0x270 [ 60.261096][ T7202] do_readv+0x27f/0x300 [ 60.265252][ T7202] ? vfs_readv+0x160/0x160 [ 60.269650][ T7202] ? trace_hardirqs_off_caller+0x55/0x230 [ 60.275352][ T7202] do_syscall_64+0xf6/0x7d0 [ 60.279851][ T7202] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.285727][ T7202] RIP: 0033:0x4458d9 [ 60.289606][ T7202] Code: e8 bc b7 02 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.309194][ T7202] RSP: 002b:00007fd20c24bda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 60.317595][ T7202] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004458d9 [ 60.325846][ T7202] RDX: 0000000000000002 RSI: 0000000020001680 RDI: 0000000000000003 [ 60.333820][ T7202] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 60.341770][ T7202] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 60.350609][ T7202] R13: 0000000020000b40 R14: 00000000004adda8 R15: 20c49ba5e353f7cf [ 60.358582][ T7202] list_del corruption. prev->next should be ffffc90001817bc0, but was 0000000000000000 [ 60.368400][ T7202] ------------[ cut here ]------------ [ 60.373847][ T7202] kernel BUG at lib/list_debug.c:51! [ 60.379255][ T7202] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 60.385302][ T7202] CPU: 1 PID: 7202 Comm: syz-executor152 Not tainted 5.6.0-next-20200411-syzkaller #0 [ 60.394816][ T7202] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.404873][ T7202] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 [ 60.411180][ T7202] Code: e8 34 5c c2 fd 0f 0b 48 89 f1 48 c7 c7 00 a9 72 88 4c 89 e6 e8 20 5c c2 fd 0f 0b 48 89 ee 48 c7 c7 a0 aa 72 88 e8 0f 5c c2 fd <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 a9 72 88 e8 fb 5b c2 fd 0f 0b [ 60.430859][ T7202] RSP: 0018:ffffc90001817a60 EFLAGS: 00010082 [ 60.436913][ T7202] RAX: 0000000000000054 RBX: ffffc90001817ba8 RCX: 0000000000000000 [ 60.445230][ T7202] RDX: 0000000000000000 RSI: ffffffff815ce321 RDI: fffff52000302f3e [ 60.453232][ T7202] RBP: ffffc90001817bc0 R08: 0000000000000054 R09: ffffed1015ce45f1 [ 60.461193][ T7202] R10: ffff8880ae722f83 R11: ffffed1015ce45f0 R12: ffff888094741210 [ 60.469158][ T7202] R13: ffff888094741210 R14: 0000000000000286 R15: ffffc90001817bc0 [ 60.477217][ T7202] FS: 00007fd20c24c700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 60.486132][ T7202] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.493653][ T7202] CR2: 0000555c78686c20 CR3: 00000000a30be000 CR4: 00000000001406e0 [ 60.501618][ T7202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.509725][ T7202] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.517773][ T7202] Call Trace: [ 60.521055][ T7202] prepare_to_wait_event+0x19c/0x650 [ 60.526384][ T7202] ? do_wait_intr_irq+0x280/0x280 [ 60.531402][ T7202] uhid_char_read+0x321/0x6c0 [ 60.536065][ T7202] ? uhid_dev_create+0xb70/0xb70 [ 60.540989][ T7202] ? finish_wait+0x260/0x260 [ 60.545668][ T7202] do_iter_read+0x483/0x650 [ 60.550172][ T7202] vfs_readv+0xf0/0x160 [ 60.554414][ T7202] ? compat_rw_copy_check_uvector+0x4a0/0x4a0 [ 60.560464][ T7202] ? rcu_read_lock_held_common+0x130/0x130 [ 60.566329][ T7202] ? do_dup2+0x520/0x520 [ 60.570570][ T7202] ? __schedule+0x93f/0x1ff0 [ 60.575294][ T7202] ? __fget_light+0x20e/0x270 [ 60.580065][ T7202] do_readv+0x27f/0x300 [ 60.584229][ T7202] ? vfs_readv+0x160/0x160 [ 60.588629][ T7202] ? trace_hardirqs_off_caller+0x55/0x230 [ 60.594332][ T7202] do_syscall_64+0xf6/0x7d0 [ 60.598817][ T7202] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.604685][ T7202] RIP: 0033:0x4458d9 [ 60.608573][ T7202] Code: e8 bc b7 02 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.628422][ T7202] RSP: 002b:00007fd20c24bda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 60.636812][ T7202] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004458d9 [ 60.644761][ T7202] RDX: 0000000000000002 RSI: 0000000020001680 RDI: 0000000000000003 [ 60.652721][ T7202] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 60.660703][ T7202] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 60.668694][ T7202] R13: 0000000020000b40 R14: 00000000004adda8 R15: 20c49ba5e353f7cf [ 60.676663][ T7202] Modules linked in: [ 60.680554][ T7202] ---[ end trace e7d42539b3cc4294 ]--- [ 60.686542][ T7202] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 [ 60.693074][ T7202] Code: e8 34 5c c2 fd 0f 0b 48 89 f1 48 c7 c7 00 a9 72 88 4c 89 e6 e8 20 5c c2 fd 0f 0b 48 89 ee 48 c7 c7 a0 aa 72 88 e8 0f 5c c2 fd <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 a9 72 88 e8 fb 5b c2 fd 0f 0b [ 60.719993][ T7202] RSP: 0018:ffffc90001817a60 EFLAGS: 00010082 [ 60.726039][ T7202] RAX: 0000000000000054 RBX: ffffc90001817ba8 RCX: 0000000000000000 [ 60.734014][ T7202] RDX: 0000000000000000 RSI: ffffffff815ce321 RDI: fffff52000302f3e [ 60.741993][ T7202] RBP: ffffc90001817bc0 R08: 0000000000000054 R09: ffffed1015ce45f1 [ 60.749963][ T7202] R10: ffff8880ae722f83 R11: ffffed1015ce45f0 R12: ffff888094741210 [ 60.757925][ T7202] R13: ffff888094741210 R14: 0000000000000286 R15: ffffc90001817bc0 [ 60.765878][ T7202] FS: 00007fd20c24c700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 60.774958][ T7202] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.781542][ T7202] CR2: 0000555c78686c20 CR3: 00000000a30be000 CR4: 00000000001406e0 [ 60.789506][ T7202] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.797754][ T7202] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.805854][ T7202] Kernel panic - not syncing: Fatal exception [ 60.813621][ T7202] Kernel Offset: disabled [ 60.817956][ T7202] Rebooting in 86400 seconds..