[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
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syzkaller login: [   46.986079][ T7003] general protection fault, probably for non-canonical address 0xdffffc001fffffe9: 0000 [#1] PREEMPT SMP KASAN
[   46.986086][ T7003] KASAN: probably user-memory-access in range [0x00000000ffffff48-0x00000000ffffff4f]
[   46.986096][ T7003] CPU: 0 PID: 7003 Comm: syz-executor793 Not tainted 5.7.0-rc3-syzkaller #0
[   46.986100][ T7003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.986114][ T7003] RIP: 0010:do_con_write+0x1a6a/0xf2d0
[   46.986122][ T7003] Code: 02 00 00 48 8b 7c 24 60 49 89 ff 49 c1 ef 03 43 80 3c 2f 00 74 0a e8 45 48 b5 fd 48 8b 7c 24 60 48 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c5 02 00 00 66 44 89 33 48 c7 c7 1c bc
[   46.986126][ T7003] RSP: 0018:ffffc900016478e0 EFLAGS: 00010202
[   46.986133][ T7003] RAX: 000000001fffffe9 RBX: 00000000ffffff48 RCX: ffff8880a8894440
[   46.986139][ T7003] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88809eaed3f0
[   46.986144][ T7003] RBP: ffffc90001647bd0 R08: ffffffff83fbf861 R09: ffffffff83fa2490
[   46.986148][ T7003] R10: ffff8880a8894440 R11: 0000000000000006 R12: ffff88809eaed000
[   46.986153][ T7003] R13: dffffc0000000000 R14: 0000000000000778 R15: 1ffff11013d5da7e
[   46.986160][ T7003] FS:  0000000002567880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
[   46.986166][ T7003] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   46.986171][ T7003] CR2: 00000000006cc090 CR3: 00000000964f2000 CR4: 00000000001406f0
[   46.986180][ T7003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   46.986185][ T7003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   46.986188][ T7003] Call Trace:
[   46.986225][ T7003]  ? _raw_spin_unlock_irqrestore+0x6f/0xd0
[   46.986234][ T7003]  con_write+0x20/0x40
[   46.986243][ T7003]  n_tty_write+0xcbf/0x1170
[   46.986258][ T7003]  ? wait_woken+0x240/0x240
[   46.986267][ T7003]  tty_write+0x593/0x940
[   46.986277][ T7003]  ? n_tty_read+0x1bc0/0x1bc0
[   46.986284][ T7003]  ? redirected_tty_write+0xb0/0xb0
[   46.986293][ T7003]  __vfs_write+0xa7/0x710
[   46.986307][ T7003]  ? fsnotify_perm+0x64/0x390
[   46.986316][ T7003]  vfs_write+0x274/0x580
[   46.986326][ T7003]  ksys_write+0x11b/0x220
[   46.986338][ T7003]  do_syscall_64+0xf3/0x1b0
[   46.986348][ T7003]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   46.986354][ T7003] RIP: 0033:0x441699
[   46.986361][ T7003] Code: e8 ac 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   46.986366][ T7003] RSP: 002b:00007ffcd109df88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   46.986373][ T7003] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441699
[   46.986378][ T7003] RDX: 0000000000000320 RSI: 00000000200001c0 RDI: 0000000000000003
[   46.986383][ T7003] RBP: 00000000006cc018 R08: 000000000000000e R09: 00000000004002c8
[   46.986387][ T7003] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402410
[   46.986392][ T7003] R13: 00000000004024a0 R14: 0000000000000000 R15: 0000000000000000
[   46.986401][ T7003] Modules linked in:
[   46.986413][ T7003] ---[ end trace 7a76d2236745bdee ]---
[   46.986423][ T7003] RIP: 0010:do_con_write+0x1a6a/0xf2d0
[   46.986430][ T7003] Code: 02 00 00 48 8b 7c 24 60 49 89 ff 49 c1 ef 03 43 80 3c 2f 00 74 0a e8 45 48 b5 fd 48 8b 7c 24 60 48 8b 1f 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c5 02 00 00 66 44 89 33 48 c7 c7 1c bc
[   46.986435][ T7003] RSP: 0018:ffffc900016478e0 EFLAGS: 00010202
[   46.986442][ T7003] RAX: 000000001fffffe9 RBX: 00000000ffffff48 RCX: ffff8880a8894440
[   46.986447][ T7003] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88809eaed3f0
[   46.986452][ T7003] RBP: ffffc90001647bd0 R08: ffffffff83fbf861 R09: ffffffff83fa2490
[   46.986457][ T7003] R10: ffff8880a8894440 R11: 0000000000000006 R12: ffff88809eaed000
[   46.986462][ T7003] R13: dffffc0000000000 R14: 0000000000000778 R15: 1ffff11013d5da7e
[   46.986469][ T7003] FS:  0000000002567880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
[   46.986474][ T7003] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   46.986479][ T7003] CR2: 00000000006cc090 CR3: 00000000964f2000 CR4: 00000000001406f0
[   46.986484][ T7003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   46.986489][ T7003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   46.986494][ T7003] Kernel panic - not syncing: Fatal exception
[   46.987623][ T7003] Kernel Offset: disabled