[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.038460][ T27] audit: type=1800 audit(1584600874.408:25): pid=9442 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.066642][ T27] audit: type=1800 audit(1584600874.408:26): pid=9442 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.114822][ T27] audit: type=1800 audit(1584600874.408:27): pid=9442 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 '10.128.0.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 82.124315][ T3440] hid-generic 0000:0000:0000.0001: ignoring exceeding usage max [ 82.138504][ T3440] hid-generic 0000:0000:0000.0001: hidraw0: HID v0.00 Device [syz1] on sz1 [ 82.284341][ T9593] INFO: trying to register non-static key. [ 82.290179][ T9593] the code is fine but needs lockdep annotation. [ 82.296483][ T9593] turning off the locking correctness validator. [ 82.302892][ T9593] CPU: 0 PID: 9593 Comm: syz-executor724 Not tainted 5.6.0-rc6-syzkaller #0 [ 82.312692][ T9593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.322783][ T9593] Call Trace: [ 82.326180][ T9593] dump_stack+0x188/0x20d [ 82.330499][ T9593] register_lock_class+0x14c4/0x1540 [ 82.336617][ T9593] ? __lock_acquire+0x14bd/0x3ca0 [ 82.341633][ T9593] ? is_dynamic_key+0x1a0/0x1a0 [ 82.346463][ T9593] __lock_acquire+0xfc/0x3ca0 [ 82.351132][ T9593] ? lock_downgrade+0x7f0/0x7f0 [ 82.355970][ T9593] ? lock_acquire+0x197/0x420 [ 82.360623][ T9593] ? mark_held_locks+0xe0/0xe0 [ 82.365476][ T9593] ? _raw_spin_unlock_irq+0x1f/0x80 [ 82.370758][ T9593] ? lockdep_hardirqs_on+0x417/0x5d0 [ 82.376144][ T9593] lock_acquire+0x197/0x420 [ 82.380797][ T9593] ? prepare_to_wait_event+0x5b/0x650 [ 82.386167][ T9593] _raw_spin_lock_irqsave+0x8c/0xbf [ 82.391517][ T9593] ? prepare_to_wait_event+0x5b/0x650 [ 82.396880][ T9593] prepare_to_wait_event+0x5b/0x650 [ 82.402197][ T9593] ? do_wait_intr_irq+0x280/0x280 [ 82.407213][ T9593] uhid_char_read+0x31b/0x6c0 [ 82.411890][ T9593] ? uhid_dev_create+0xb70/0xb70 [ 82.416819][ T9593] ? finish_wait+0x260/0x260 [ 82.421538][ T9593] do_iter_read+0x47f/0x650 [ 82.426266][ T9593] compat_readv+0x187/0x1f0 [ 82.430769][ T9593] ? vfs_iter_read+0xa0/0xa0 [ 82.435433][ T9593] ? rcu_read_lock_held_common+0x130/0x130 [ 82.441254][ T9593] ? __fget_files+0x329/0x4f0 [ 82.446550][ T9593] ? ksys_dup3+0x3c0/0x3c0 [ 82.451155][ T9593] ? __fget_light+0x208/0x270 [ 82.455819][ T9593] do_compat_readv+0xd5/0x1d0 [ 82.460492][ T9593] ? compat_readv+0x1f0/0x1f0 [ 82.465151][ T9593] ? trace_hardirqs_off+0x50/0x220 [ 82.470255][ T9593] ? trace_hardirqs_off_caller+0x55/0x230 [ 82.475962][ T9593] do_fast_syscall_32+0x270/0xe8f [ 82.480971][ T9593] entry_SYSENTER_compat+0x70/0x7f [ 82.486073][ T9593] list_del corruption. prev->next should be ffffc90002337ba0, but was 0000000000000000 [ 82.495890][ T9593] ------------[ cut here ]------------ [ 82.501473][ T9593] kernel BUG at lib/list_debug.c:51! [ 82.506881][ T9593] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 82.512930][ T9593] CPU: 0 PID: 9593 Comm: syz-executor724 Not tainted 5.6.0-rc6-syzkaller #0 [ 82.521581][ T9593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.531629][ T9593] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 [ 82.537940][ T9593] 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 [ 82.557549][ T9593] RSP: 0018:ffffc90002337a40 EFLAGS: 00010082 [ 82.563615][ T9593] RAX: 0000000000000054 RBX: ffffc90002337b88 RCX: 0000000000000000 [ 82.571665][ T9593] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000466f3a [ 82.579900][ T9593] RBP: ffffc90002337ba0 R08: 0000000000000054 R09: ffffed1015cc45c9 [ 82.587865][ T9593] R10: ffffed1015cc45c8 R11: ffff8880ae622e43 R12: ffff888096f811f8 [ 82.595840][ T9593] R13: ffff888096f811f8 R14: 0000000000000286 R15: ffffc90002337ba0 [ 82.604723][ T9593] FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f7f4eb40 [ 82.613672][ T9593] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 82.620412][ T9593] CR2: 00007ff15edb7000 CR3: 000000009e863000 CR4: 00000000001406f0 [ 82.628557][ T9593] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.636518][ T9593] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.644839][ T9593] Call Trace: [ 82.648154][ T9593] prepare_to_wait_event+0x19c/0x650 [ 82.653418][ T9593] ? do_wait_intr_irq+0x280/0x280 [ 82.658439][ T9593] uhid_char_read+0x31b/0x6c0 [ 82.663100][ T9593] ? uhid_dev_create+0xb70/0xb70 [ 82.668020][ T9593] ? finish_wait+0x260/0x260 [ 82.672768][ T9593] do_iter_read+0x47f/0x650 [ 82.677268][ T9593] compat_readv+0x187/0x1f0 [ 82.682243][ T9593] ? vfs_iter_read+0xa0/0xa0 [ 82.686883][ T9593] ? rcu_read_lock_held_common+0x130/0x130 [ 82.692810][ T9593] ? __fget_files+0x329/0x4f0 [ 82.697484][ T9593] ? ksys_dup3+0x3c0/0x3c0 [ 82.701892][ T9593] ? __fget_light+0x208/0x270 [ 82.706567][ T9593] do_compat_readv+0xd5/0x1d0 [ 82.711685][ T9593] ? compat_readv+0x1f0/0x1f0 [ 82.716523][ T9593] ? trace_hardirqs_off+0x50/0x220 [ 82.721771][ T9593] ? trace_hardirqs_off_caller+0x55/0x230 [ 82.727957][ T9593] do_fast_syscall_32+0x270/0xe8f [ 82.733041][ T9593] entry_SYSENTER_compat+0x70/0x7f [ 82.738158][ T9593] Modules linked in: [ 82.742067][ T9593] ---[ end trace c3d3d17f7cd7211b ]--- [ 82.747666][ T9593] RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 [ 82.754130][ T9593] 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 [ 82.775403][ T9593] RSP: 0018:ffffc90002337a40 EFLAGS: 00010082 [ 82.781472][ T9593] RAX: 0000000000000054 RBX: ffffc90002337b88 RCX: 0000000000000000 [ 82.789445][ T9593] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000466f3a [ 82.797419][ T9593] RBP: ffffc90002337ba0 R08: 0000000000000054 R09: ffffed1015cc45c9 [ 82.805405][ T9593] R10: ffffed1015cc45c8 R11: ffff8880ae622e43 R12: ffff888096f811f8 [ 82.813849][ T9593] R13: ffff888096f811f8 R14: 0000000000000286 R15: ffffc90002337ba0 [ 82.822516][ T9593] FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f7f4eb40 [ 82.831431][ T9593] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 82.838009][ T9593] CR2: 00007ff15edb7000 CR3: 000000009e863000 CR4: 00000000001406f0 [ 82.845993][ T9593] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.853954][ T9593] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.861939][ T9593] Kernel panic - not syncing: Fatal exception [ 82.869461][ T9593] Kernel Offset: disabled [ 82.873792][ T9593] Rebooting in 86400 seconds..