[  OK  ] Reached target Login Prompts.
[  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 '10.128.0.87' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   56.523216][ T6787] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
[   56.535040][ T6787] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
[   56.543429][ T6787] CPU: 1 PID: 6787 Comm: syz-executor654 Not tainted 5.7.0-syzkaller #0
[   56.551723][ T6787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.561761][ T6787] RIP: 0010:qrtr_endpoint_post+0x92/0xfa0
[   56.567455][ T6787] Code: 44 89 e6 e8 80 27 4e fe 48 85 c0 48 89 c5 0f 84 57 0e 00 00 e8 4f 7a 9e f9 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 f7 0c 00 00
[   56.587146][ T6787] RSP: 0018:ffffc90000eb7c48 EFLAGS: 00010202
[   56.593227][ T6787] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff86237e4b
[   56.601172][ T6787] RDX: 0000000000000002 RSI: ffffffff87d55471 RDI: ffff88809f1bca90
[   56.609119][ T6787] RBP: ffff88809f1bca80 R08: ffff88808ff80440 R09: ffffed10119aa81d
[   56.617125][ T6787] R10: ffff88808cd540e3 R11: ffffed10119aa81c R12: 0000000000000000
[   56.625119][ T6787] R13: ffff88809f463a00 R14: ffffc90000eb7eb0 R15: 0000000000000000
[   56.633069][ T6787] FS:  0000000001766880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   56.642114][ T6787] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.648675][ T6787] CR2: 0000000020000000 CR3: 000000009ebf1000 CR4: 00000000001406e0
[   56.656650][ T6787] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   56.664602][ T6787] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   56.672550][ T6787] Call Trace:
[   56.675826][ T6787]  ? find_held_lock+0x2d/0x110
[   56.680566][ T6787]  qrtr_tun_write_iter+0xf5/0x180
[   56.685564][ T6787]  new_sync_write+0x426/0x650
[   56.690215][ T6787]  ? new_sync_read+0x6d0/0x6d0
[   56.694979][ T6787]  ? apparmor_path_rmdir+0x30/0x30
[   56.700067][ T6787]  ? security_file_permission+0x8c/0x470
[   56.705670][ T6787]  ? file_open_root+0x400/0x400
[   56.710511][ T6787]  __vfs_write+0xc9/0x100
[   56.714816][ T6787]  vfs_write+0x268/0x5d0
[   56.719050][ T6787]  ksys_write+0x12d/0x250
[   56.723350][ T6787]  ? __ia32_sys_read+0xb0/0xb0
[   56.728089][ T6787]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   56.734043][ T6787]  ? do_syscall_64+0x21/0x7d0
[   56.738691][ T6787]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   56.744751][ T6787]  do_syscall_64+0xf6/0x7d0
[   56.749266][ T6787]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   56.755152][ T6787] RIP: 0033:0x4401b9
[   56.759020][ T6787] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   56.778602][ T6787] RSP: 002b:00007ffcefc4ae88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   56.786983][ T6787] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401b9
[   56.794927][ T6787] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
[   56.802888][ T6787] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   56.810834][ T6787] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a40
[   56.818777][ T6787] R13: 0000000000401ad0 R14: 0000000000000000 R15: 0000000000000000
[   56.826725][ T6787] Modules linked in:
[   56.838990][ T6787] ---[ end trace 439312988de08fcd ]---
[   56.844450][ T6787] RIP: 0010:qrtr_endpoint_post+0x92/0xfa0
[   56.850804][ T6787] Code: 44 89 e6 e8 80 27 4e fe 48 85 c0 48 89 c5 0f 84 57 0e 00 00 e8 4f 7a 9e f9 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 f7 0c 00 00
[   56.871221][ T6787] RSP: 0018:ffffc90000eb7c48 EFLAGS: 00010202
[   56.877660][ T6787] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff86237e4b
[   56.885631][ T6787] RDX: 0000000000000002 RSI: ffffffff87d55471 RDI: ffff88809f1bca90
[   56.894165][ T6787] RBP: ffff88809f1bca80 R08: ffff88808ff80440 R09: ffffed10119aa81d
[   56.902478][ T6787] R10: ffff88808cd540e3 R11: ffffed10119aa81c R12: 0000000000000000
[   56.910782][ T6787] R13: ffff88809f463a00 R14: ffffc90000eb7eb0 R15: 0000000000000000
[   56.919506][ T6787] FS:  0000000001766880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   56.929042][ T6787] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.935613][ T6787] CR2: 00007f831a4cd000 CR3: 000000009ebf1000 CR4: 00000000001406e0
[   56.944211][ T6787] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   56.953083][ T6787] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   56.961224][ T6787] Kernel panic - not syncing: Fatal exception
[   56.968472][ T6787] Kernel Offset: disabled
[   56.972922][ T6787] Rebooting in 86400 seconds..