[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.225027][ T27] audit: type=1800 audit(1584595883.871:25): pid=9239 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.259897][ T27] audit: type=1800 audit(1584595883.871:26): pid=9239 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.289944][ T27] audit: type=1800 audit(1584595883.871:27): pid=9239 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.241' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 88.687145][ T2705] hid-generic 0000:0000:0000.0001: ignoring exceeding usage max [ 88.699409][ T2705] hid-generic 0000:0000:0000.0001: hidraw0: HID v0.00 Device [syz1] on sz1 [ 88.851019][ T9392] INFO: trying to register non-static key. [ 88.856828][ T9392] the code is fine but needs lockdep annotation. [ 88.863121][ T9392] turning off the locking correctness validator. [ 88.869418][ T9392] CPU: 0 PID: 9392 Comm: syz-executor302 Not tainted 5.6.0-rc6-syzkaller #0 [ 88.878055][ T9392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.888083][ T9392] Call Trace: [ 88.891353][ T9392] dump_stack+0x188/0x20d [ 88.895713][ T9392] register_lock_class+0x14c4/0x1540 [ 88.900973][ T9392] ? __lock_acquire+0x14bd/0x3ca0 [ 88.905972][ T9392] ? is_dynamic_key+0x1a0/0x1a0 [ 88.910797][ T9392] __lock_acquire+0xfc/0x3ca0 [ 88.915451][ T9392] ? lock_downgrade+0x7f0/0x7f0 [ 88.920272][ T9392] ? lock_acquire+0x197/0x420 [ 88.924922][ T9392] ? mark_held_locks+0xe0/0xe0 [ 88.929659][ T9392] ? _raw_spin_unlock_irq+0x1f/0x80 [ 88.934871][ T9392] ? lockdep_hardirqs_on+0x417/0x5d0 [ 88.940128][ T9392] lock_acquire+0x197/0x420 [ 88.944617][ T9392] ? prepare_to_wait_event+0x5b/0x650 [ 88.949969][ T9392] _raw_spin_lock_irqsave+0x8c/0xbf [ 88.955140][ T9392] ? prepare_to_wait_event+0x5b/0x650 [ 88.960489][ T9392] prepare_to_wait_event+0x5b/0x650 [ 88.965669][ T9392] ? do_wait_intr_irq+0x280/0x280 [ 88.970670][ T9392] uhid_char_read+0x31b/0x6c0 [ 88.975326][ T9392] ? uhid_dev_create+0xb70/0xb70 [ 88.980279][ T9392] ? finish_wait+0x260/0x260 [ 88.984843][ T9392] do_iter_read+0x47f/0x650 [ 88.989320][ T9392] vfs_readv+0xf0/0x160 [ 88.993452][ T9392] ? compat_rw_copy_check_uvector+0x4b0/0x4b0 [ 88.999486][ T9392] ? rcu_read_lock_held_common+0x130/0x130 [ 89.005270][ T9392] ? ksys_dup3+0x3c0/0x3c0 [ 89.009659][ T9392] ? __schedule+0x93c/0x1f90 [ 89.014225][ T9392] ? __fget_light+0x208/0x270 [ 89.018872][ T9392] do_readv+0x279/0x2f0 [ 89.023041][ T9392] ? vfs_readv+0x160/0x160 [ 89.027432][ T9392] ? trace_hardirqs_off_caller+0x55/0x230 [ 89.033127][ T9392] do_syscall_64+0xf6/0x7d0 [ 89.037603][ T9392] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.043474][ T9392] RIP: 0033:0x4458d9 [ 89.047342][ T9392] 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 [ 89.066914][ T9392] RSP: 002b:00007f0082936da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 89.075294][ T9392] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004458d9 [ 89.083240][ T9392] RDX: 0000000000000002 RSI: 0000000020001680 RDI: 0000000000000003 [ 89.091187][ T9392] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 89.099140][ T9392] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 89.107084][ T9392] R13: 0000000020000b40 R14: 00000000004adda8 R15: 20c49ba5e353f7cf [ 89.115036][ T9392] list_del corruption. prev->next should be ffffc90002197bc0, but was 0000000000000000 [ 89.124861][ T9392] ------------[ cut here ]------------ [ 89.130292][ T9392] kernel BUG at lib/list_debug.c:51! [ 89.135565][ T9392] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 89.141603][ T9392] CPU: 0 PID: 9392 Comm: syz-executor302 Not tainted 5.6.0-rc6-syzkaller #0 [ 89.150244][ T9392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.160311][ T9392] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 [ 89.166610][ T9392] Code: e8 44 93 c9 fd 0f 0b 48 89 f1 48 c7 c7 c0 e6 51 88 4c 89 e6 e8 30 93 c9 fd 0f 0b 48 89 ee 48 c7 c7 60 e8 51 88 e8 1f 93 c9 fd <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 e7 51 88 e8 0b 93 c9 fd 0f 0b [ 89.186218][ T9392] RSP: 0018:ffffc90002197a60 EFLAGS: 00010082 [ 89.192257][ T9392] RAX: 0000000000000054 RBX: ffffc90002197ba8 RCX: 0000000000000000 [ 89.200202][ T9392] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000432f3e [ 89.208145][ T9392] RBP: ffffc90002197bc0 R08: 0000000000000054 R09: ffffed1015cc45c9 [ 89.216089][ T9392] R10: ffffed1015cc45c8 R11: ffff8880ae622e43 R12: ffff88808d4e11f8 [ 89.224041][ T9392] R13: ffff88808d4e11f8 R14: 0000000000000286 R15: ffffc90002197bc0 [ 89.231992][ T9392] FS: 00007f0082937700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 89.240890][ T9392] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.247444][ T9392] CR2: 00007fc99cd1c000 CR3: 000000009f435000 CR4: 00000000001406f0 [ 89.255391][ T9392] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.263336][ T9392] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.271279][ T9392] Call Trace: [ 89.274545][ T9392] prepare_to_wait_event+0x19c/0x650 [ 89.279814][ T9392] ? do_wait_intr_irq+0x280/0x280 [ 89.284818][ T9392] uhid_char_read+0x31b/0x6c0 [ 89.289471][ T9392] ? uhid_dev_create+0xb70/0xb70 [ 89.294381][ T9392] ? finish_wait+0x260/0x260 [ 89.298949][ T9392] do_iter_read+0x47f/0x650 [ 89.303448][ T9392] vfs_readv+0xf0/0x160 [ 89.307585][ T9392] ? compat_rw_copy_check_uvector+0x4b0/0x4b0 [ 89.313629][ T9392] ? rcu_read_lock_held_common+0x130/0x130 [ 89.319548][ T9392] ? ksys_dup3+0x3c0/0x3c0 [ 89.323941][ T9392] ? __schedule+0x93c/0x1f90 [ 89.328511][ T9392] ? __fget_light+0x208/0x270 [ 89.333171][ T9392] do_readv+0x279/0x2f0 [ 89.337303][ T9392] ? vfs_readv+0x160/0x160 [ 89.341701][ T9392] ? trace_hardirqs_off_caller+0x55/0x230 [ 89.347397][ T9392] do_syscall_64+0xf6/0x7d0 [ 89.351875][ T9392] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.357739][ T9392] RIP: 0033:0x4458d9 [ 89.361720][ T9392] 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 [ 89.381300][ T9392] RSP: 002b:00007f0082936da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 [ 89.389685][ T9392] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004458d9 [ 89.397631][ T9392] RDX: 0000000000000002 RSI: 0000000020001680 RDI: 0000000000000003 [ 89.405581][ T9392] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 89.413529][ T9392] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 89.421514][ T9392] R13: 0000000020000b40 R14: 00000000004adda8 R15: 20c49ba5e353f7cf [ 89.429465][ T9392] Modules linked in: [ 89.433340][ T9392] ---[ end trace d2f12cae324b95c6 ]--- [ 89.438778][ T9392] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 [ 89.445122][ T9392] Code: e8 44 93 c9 fd 0f 0b 48 89 f1 48 c7 c7 c0 e6 51 88 4c 89 e6 e8 30 93 c9 fd 0f 0b 48 89 ee 48 c7 c7 60 e8 51 88 e8 1f 93 c9 fd <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 e7 51 88 e8 0b 93 c9 fd 0f 0b [ 89.464699][ T9392] RSP: 0018:ffffc90002197a60 EFLAGS: 00010082 [ 89.470744][ T9392] RAX: 0000000000000054 RBX: ffffc90002197ba8 RCX: 0000000000000000 [ 89.478704][ T9392] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000432f3e [ 89.486719][ T9392] RBP: ffffc90002197bc0 R08: 0000000000000054 R09: ffffed1015cc45c9 [ 89.494667][ T9392] R10: ffffed1015cc45c8 R11: ffff8880ae622e43 R12: ffff88808d4e11f8 [ 89.502637][ T9392] R13: ffff88808d4e11f8 R14: 0000000000000286 R15: ffffc90002197bc0 [ 89.510765][ T9392] FS: 00007f0082937700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 89.519679][ T9392] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.526238][ T9392] CR2: 00007fc99cd1c000 CR3: 000000009f435000 CR4: 00000000001406f0 [ 89.534191][ T9392] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.542137][ T9392] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.550085][ T9392] Kernel panic - not syncing: Fatal exception [ 89.557385][ T9392] Kernel Offset: disabled [ 89.561707][ T9392] Rebooting in 86400 seconds..