[ 89.796430][ T27] audit: type=1800 audit(1581856834.124:24): pid=9818 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 90.502577][ T27] audit: type=1800 audit(1581856834.934:25): pid=9818 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 90.522775][ T27] audit: type=1800 audit(1581856834.944:26): pid=9818 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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 '10.128.10.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 102.912500][ T9971] general protection fault, probably for non-canonical address 0xdffffc0020000001: 0000 [#1] PREEMPT SMP KASAN [ 102.912511][ T9971] KASAN: probably user-memory-access in range [0x0000000100000008-0x000000010000000f] [ 102.912525][ T9971] CPU: 0 PID: 9971 Comm: syz-executor132 Not tainted 5.6.0-rc1-syzkaller #0 [ 102.912533][ T9971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 102.912554][ T9971] RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 [ 102.912566][ T9971] Code: 7e fe ff ff 45 01 ef e8 9d 44 81 fd 48 8b 85 c8 fe ff ff 80 38 00 0f 85 71 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 102.912573][ T9971] RSP: 0018:ffffc90006b9f9e0 EFLAGS: 00010203 [ 102.912584][ T9971] RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83f44c40 [ 102.912592][ T9971] RDX: 0000000000000000 RSI: ffffffff83f44c93 RDI: 0000000000000003 [ 102.912600][ T9971] RBP: ffffc90006b9fb70 R08: ffff88808fd5a180 R09: ffff88808fd5aa10 [ 102.912606][ T9971] R10: fffffbfff154b488 R11: ffffffff8aa5a447 R12: dffffc0000000000 [ 102.912613][ T9971] R13: 0000000000000000 R14: ffff8880a97e3000 R15: 000000000000074d [ 102.912622][ T9971] FS: 00000000015f6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 102.912629][ T9971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.912637][ T9971] CR2: 0000000000455310 CR3: 000000009ff62000 CR4: 00000000001406f0 [ 102.912648][ T9971] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.912656][ T9971] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.912659][ T9971] Call Trace: [ 102.912688][ T9971] ? do_con_trol+0x61b0/0x61b0 [ 102.912704][ T9971] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 102.912717][ T9971] ? add_wait_queue+0x112/0x170 [ 102.912731][ T9971] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 102.912750][ T9971] ? trace_hardirqs_on+0x67/0x240 [ 102.912769][ T9971] con_write+0x46/0xd0 [ 102.912784][ T9971] n_tty_write+0x40e/0x1080 [ 102.912808][ T9971] ? n_tty_read+0x1bf0/0x1bf0 [ 102.912824][ T9971] ? prepare_to_wait_exclusive+0x320/0x320 [ 102.912845][ T9971] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 102.912857][ T9971] ? _copy_from_user+0x12c/0x1a0 [ 102.912872][ T9971] tty_write+0x496/0x7f0 [ 102.912887][ T9971] ? n_tty_read+0x1bf0/0x1bf0 [ 102.912905][ T9971] __vfs_write+0x8a/0x110 [ 102.912916][ T9971] ? put_tty_driver+0x20/0x20 [ 102.912932][ T9971] vfs_write+0x268/0x5d0 [ 102.912948][ T9971] ksys_write+0x14f/0x290 [ 102.912963][ T9971] ? __ia32_sys_read+0xb0/0xb0 [ 102.912979][ T9971] ? do_syscall_64+0x26/0x790 [ 102.912993][ T9971] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 102.913005][ T9971] ? do_syscall_64+0x26/0x790 [ 102.913023][ T9971] __x64_sys_write+0x73/0xb0 [ 102.913039][ T9971] do_syscall_64+0xfa/0x790 [ 102.913056][ T9971] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 102.913065][ T9971] RIP: 0033:0x4403c9 [ 102.913079][ T9971] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 102.913087][ T9971] RSP: 002b:00007fff1a8536a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 102.913099][ T9971] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403c9 [ 102.913105][ T9971] RDX: 0000000000000002 RSI: 0000000020002b40 RDI: 0000000000000004 [ 102.913112][ T9971] RBP: 00000000006ca018 R08: 000000000000000e R09: 00000000004002c8 [ 102.913119][ T9971] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401cb0 [ 102.913133][ T9971] R13: 0000000000401d40 R14: 0000000000000000 R15: 0000000000000000 [ 102.913148][ T9971] Modules linked in: [ 102.913164][ T9971] ---[ end trace 34eef11dc47748fa ]--- [ 102.913178][ T9971] RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 [ 102.913192][ T9971] Code: 7e fe ff ff 45 01 ef e8 9d 44 81 fd 48 8b 85 c8 fe ff ff 80 38 00 0f 85 71 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 102.913199][ T9971] RSP: 0018:ffffc90006b9f9e0 EFLAGS: 00010203 [ 102.913210][ T9971] RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83f44c40 [ 102.913219][ T9971] RDX: 0000000000000000 RSI: ffffffff83f44c93 RDI: 0000000000000003 [ 102.913228][ T9971] RBP: ffffc90006b9fb70 R08: ffff88808fd5a180 R09: ffff88808fd5aa10 [ 102.913237][ T9971] R10: fffffbfff154b488 R11: ffffffff8aa5a447 R12: dffffc0000000000 [ 102.913245][ T9971] R13: 0000000000000000 R14: ffff8880a97e3000 R15: 000000000000074d [ 102.913257][ T9971] FS: 00000000015f6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 102.913266][ T9971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.913275][ T9971] CR2: 0000000000455310 CR3: 000000009ff62000 CR4: 00000000001406f0 [ 102.913286][ T9971] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.913295][ T9971] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.913301][ T9971] Kernel panic - not syncing: Fatal exception [ 102.914647][ T9971] Kernel Offset: disabled [ 103.391693][ T9971] Rebooting in 86400 seconds..