[ 94.264622][ T27] audit: type=1800 audit(1579867600.430:26): pid=9518 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. [ 95.179972][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 95.179984][ T27] audit: type=1800 audit(1579867601.360:29): pid=9518 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 95.206612][ T27] audit: type=1800 audit(1579867601.360:30): pid=9518 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. syzkaller login: [ 104.535706][ T9672] IPVS: ftp: loaded support on port[0] = 21 [ 104.536434][ T9678] IPVS: ftp: loaded support on port[0] = 21 [ 104.552618][ T9676] IPVS: ftp: loaded support on port[0] = 21 [ 104.556319][ T9679] IPVS: ftp: loaded support on port[0] = 21 [ 104.564040][ T9677] IPVS: ftp: loaded support on port[0] = 21 [ 104.572761][ T9680] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 104.776574][ T9682] kasan: CONFIG_KASAN_INLINE enabled [ 104.776600][ T9682] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 104.776618][ T9682] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 104.776632][ T9682] CPU: 1 PID: 9682 Comm: syz-executor312 Not tainted 5.5.0-rc7-syzkaller #0 [ 104.776640][ T9682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.776669][ T9682] RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 [ 104.776684][ T9682] Code: 7e fe ff ff 45 01 ef e8 cd 71 87 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 [ 104.776692][ T9682] RSP: 0018:ffffc900020a7828 EFLAGS: 00010203 [ 104.776702][ T9682] RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ed8540 [ 104.776711][ T9682] RDX: 0000000000000000 RSI: ffffffff83ed8593 RDI: 0000000000000003 [ 104.776719][ T9682] RBP: ffffc900020a79b8 R08: ffff88808fd020c0 R09: ffff88808fd02950 [ 104.776728][ T9682] R10: fffffbfff14f69d8 R11: ffffffff8a7b4ec7 R12: dffffc0000000000 [ 104.776737][ T9682] R13: 0000000000000000 R14: ffff888099b9e000 R15: 0000000000000764 [ 104.776748][ T9682] FS: 0000000001223880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 104.776757][ T9682] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.776765][ T9682] CR2: 0000000020001440 CR3: 0000000091efe000 CR4: 00000000001406e0 [ 104.776777][ T9682] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.776785][ T9682] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.776788][ T9682] Call Trace: [ 104.776816][ T9682] ? do_con_trol+0x61b0/0x61b0 [ 104.776832][ T9682] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 104.776844][ T9682] ? add_wait_queue+0x112/0x170 [ 104.776858][ T9682] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 104.776876][ T9682] ? trace_hardirqs_on+0x67/0x240 [ 104.776901][ T9682] con_write+0x46/0xd0 [ 104.776918][ T9682] n_tty_write+0x40e/0x1080 [ 104.776942][ T9682] ? n_tty_read+0x1bf0/0x1bf0 [ 104.776957][ T9682] ? prepare_to_wait_exclusive+0x320/0x320 [ 104.776976][ T9682] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.776992][ T9682] ? _copy_from_user+0x12c/0x1a0 [ 104.777008][ T9682] tty_write+0x496/0x7f0 [ 104.777024][ T9682] ? n_tty_read+0x1bf0/0x1bf0 [ 104.777040][ T9682] do_iter_write+0x4a0/0x610 [ 104.777051][ T9682] ? dup_iter+0x260/0x260 [ 104.777068][ T9682] vfs_writev+0x1b3/0x2f0 [ 104.777081][ T9682] ? vfs_iter_write+0xb0/0xb0 [ 104.777092][ T9682] ? find_held_lock+0x35/0x130 [ 104.777108][ T9682] ? __do_page_fault+0x56a/0xd80 [ 104.777123][ T9682] ? lock_downgrade+0x920/0x920 [ 104.777145][ T9682] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.777158][ T9682] ? __fget_light+0x1a9/0x230 [ 104.777173][ T9682] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.777187][ T9682] do_writev+0x15b/0x330 [ 104.777201][ T9682] ? vfs_writev+0x2f0/0x2f0 [ 104.777217][ T9682] ? do_syscall_64+0x26/0x790 [ 104.777231][ T9682] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.777246][ T9682] ? do_syscall_64+0x26/0x790 [ 104.777263][ T9682] __x64_sys_writev+0x75/0xb0 [ 104.777279][ T9682] do_syscall_64+0xfa/0x790 [ 104.777294][ T9682] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.777304][ T9682] RIP: 0033:0x441639 [ 104.777318][ T9682] Code: e8 2c e8 ff ff 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 8b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 104.777325][ T9682] RSP: 002b:00007fff4c29ffb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 104.777337][ T9682] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 104.777345][ T9682] RDX: 0000000000000001 RSI: 0000000020001440 RDI: 0000000000000003 [ 104.777353][ T9682] RBP: 00000000004a2b10 R08: 000000000000000e R09: 0000000120080522 [ 104.777361][ T9682] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402450 [ 104.777369][ T9682] R13: 00000000004024e0 R14: 0000000000000000 R15: 0000000000000000 [ 104.777380][ T9682] Modules linked in: [ 104.777396][ T9682] ---[ end trace 6aa904d3968b4279 ]--- [ 104.777414][ T9682] RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 [ 104.777428][ T9682] Code: 7e fe ff ff 45 01 ef e8 cd 71 87 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 [ 104.777435][ T9682] RSP: 0018:ffffc900020a7828 EFLAGS: 00010203 [ 104.777446][ T9682] RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83ed8540 [ 104.777454][ T9682] RDX: 0000000000000000 RSI: ffffffff83ed8593 RDI: 0000000000000003 [ 104.777463][ T9682] RBP: ffffc900020a79b8 R08: ffff88808fd020c0 R09: ffff88808fd02950 [ 104.777472][ T9682] R10: fffffbfff14f69d8 R11: ffffffff8a7b4ec7 R12: dffffc0000000000 [ 104.777480][ T9682] R13: 0000000000000000 R14: ffff888099b9e000 R15: 0000000000000764 [ 104.777492][ T9682] FS: 0000000001223880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 104.777501][ T9682] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.777509][ T9682] CR2: 0000000020001440 CR3: 0000000091efe000 CR4: 00000000001406e0 [ 104.777521][ T9682] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.777529][ T9682] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.777536][ T9682] Kernel panic - not syncing: Fatal exception [ 104.778937][ T9682] Kernel Offset: disabled [ 105.311133][ T9682] Rebooting in 86400 seconds..