[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.53' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   59.091318][ T6795] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
[   59.103225][ T6795] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
[   59.111609][ T6795] CPU: 1 PID: 6795 Comm: syz-executor475 Not tainted 5.8.0-rc2-syzkaller #0
[   59.120245][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.130281][ T6795] RIP: 0010:qrtr_endpoint_post+0x92/0x1010
[   59.136077][ T6795] Code: 44 89 e6 e8 80 51 50 fe 48 85 c0 48 89 c5 0f 84 c4 0e 00 00 e8 ef 6b 96 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 4a 0d 00 00
[   59.156102][ T6795] RSP: 0018:ffffc900015f7c60 EFLAGS: 00010202
[   59.162139][ T6795] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff862d38d2
[   59.170101][ T6795] RDX: 0000000000000002 RSI: ffffffff87dce501 RDI: ffff88809f469910
[   59.178053][ T6795] RBP: ffff88809f469900 R08: 0000000000000001 R09: ffff888086c2d0e3
[   59.186002][ T6795] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   59.193957][ T6795] R13: ffff88809fa93a00 R14: ffffc900015f7ec8 R15: 0000000000000000
[   59.201909][ T6795] FS:  00000000018fa880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   59.210814][ T6795] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.217411][ T6795] CR2: 00000000004551b0 CR3: 000000009f186000 CR4: 00000000001406e0
[   59.225356][ T6795] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   59.233299][ T6795] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   59.241283][ T6795] Call Trace:
[   59.244572][ T6795]  ? __check_object_size+0x30/0x3e4
[   59.249753][ T6795]  qrtr_tun_write_iter+0xf5/0x180
[   59.254751][ T6795]  new_sync_write+0x422/0x650
[   59.259402][ T6795]  ? new_sync_read+0x6e0/0x6e0
[   59.264141][ T6795]  ? rcu_read_lock_sched_held+0x3a/0xb0
[   59.269661][ T6795]  ? security_file_permission+0x239/0x470
[   59.275352][ T6795]  __vfs_write+0xc9/0x100
[   59.279650][ T6795]  vfs_write+0x268/0x5d0
[   59.283863][ T6795]  ksys_write+0x12d/0x250
[   59.288159][ T6795]  ? __ia32_sys_read+0xb0/0xb0
[   59.292894][ T6795]  ? do_syscall_64+0x1c/0xe0
[   59.297457][ T6795]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   59.303406][ T6795]  do_syscall_64+0x60/0xe0
[   59.307796][ T6795]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   59.313665][ T6795] RIP: 0033:0x440249
[   59.317702][ T6795] Code: Bad RIP value.
[   59.321739][ T6795] RSP: 002b:00007fffb42155c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   59.330138][ T6795] RAX: ffffffffffffffda RBX: 00007fffb42155d0 RCX: 0000000000440249
[   59.338080][ T6795] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
[   59.346027][ T6795] RBP: 00000000006ca018 R08: 000000000000000f R09: 65732f636f72702f
[   59.354068][ T6795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b30
[   59.362016][ T6795] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000
[   59.369966][ T6795] Modules linked in:
[   59.374232][ T6795] ---[ end trace e8c2442282e6af33 ]---
[   59.379710][ T6795] RIP: 0010:qrtr_endpoint_post+0x92/0x1010
[   59.385835][ T6795] Code: 44 89 e6 e8 80 51 50 fe 48 85 c0 48 89 c5 0f 84 c4 0e 00 00 e8 ef 6b 96 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 4a 0d 00 00
[   59.405499][ T6795] RSP: 0018:ffffc900015f7c60 EFLAGS: 00010202
[   59.411636][ T6795] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff862d38d2
[   59.419616][ T6795] RDX: 0000000000000002 RSI: ffffffff87dce501 RDI: ffff88809f469910
[   59.427675][ T6795] RBP: ffff88809f469900 R08: 0000000000000001 R09: ffff888086c2d0e3
[   59.435730][ T6795] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   59.443778][ T6795] R13: ffff88809fa93a00 R14: ffffc900015f7ec8 R15: 0000000000000000
[   59.451889][ T6795] FS:  00000000018fa880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   59.460863][ T6795] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.467435][ T6795] CR2: 00000000004551b0 CR3: 000000009f186000 CR4: 00000000001406e0
[   59.475451][ T6795] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   59.483471][ T6795] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   59.491491][ T6795] Kernel panic - not syncing: Fatal exception
[   59.498874][ T6795] Kernel Offset: disabled
[   59.503288][ T6795] Rebooting in 86400 seconds..