Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   59.295274][ T6811] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
[   59.307198][ T6811] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
[   59.316006][ T6811] CPU: 1 PID: 6811 Comm: syz-executor649 Not tainted 5.8.0-rc2-next-20200626-syzkaller #0
[   59.325885][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.336084][ T6811] RIP: 0010:qrtr_endpoint_post+0x92/0x1010
[   59.341882][ T6811] Code: 44 89 e6 e8 30 a6 4f fe 48 85 c0 48 89 c5 0f 84 c4 0e 00 00 e8 9f c4 93 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
[   59.361476][ T6811] RSP: 0018:ffffc90000f87c60 EFLAGS: 00010202
[   59.367625][ T6811] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff862fcde2
[   59.375678][ T6811] RDX: 0000000000000002 RSI: ffffffff87e02561 RDI: ffff8880a7cfdd10
[   59.383757][ T6811] RBP: ffff8880a7cfdd00 R08: 0000000000000001 R09: ffff888086d776e3
[   59.391721][ T6811] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   59.399819][ T6811] R13: ffff8880a96efb00 R14: ffffc90000f87ec8 R15: 0000000000000000
[   59.408346][ T6811] FS:  00000000011cf880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   59.417253][ T6811] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.423811][ T6811] CR2: 00000000004551b0 CR3: 00000000a687f000 CR4: 00000000001506e0
[   59.432197][ T6811] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   59.440165][ T6811] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   59.448112][ T6811] Call Trace:
[   59.451388][ T6811]  ? __check_object_size+0x30/0x3e4
[   59.456567][ T6811]  qrtr_tun_write_iter+0xf5/0x180
[   59.461578][ T6811]  new_sync_write+0x422/0x650
[   59.466235][ T6811]  ? new_sync_read+0x6e0/0x6e0
[   59.471002][ T6811]  ? lock_is_held_type+0xb0/0xe0
[   59.475923][ T6811]  ? rcu_read_lock_sched_held+0x3a/0xb0
[   59.481456][ T6811]  ? security_file_permission+0x239/0x470
[   59.487155][ T6811]  __vfs_write+0xc9/0x100
[   59.491462][ T6811]  vfs_write+0x268/0x5d0
[   59.495725][ T6811]  ksys_write+0x12d/0x250
[   59.500047][ T6811]  ? __ia32_sys_read+0xb0/0xb0
[   59.504789][ T6811]  ? lock_is_held_type+0xb0/0xe0
[   59.509708][ T6811]  ? do_syscall_64+0x1c/0xe0
[   59.514282][ T6811]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   59.520241][ T6811]  do_syscall_64+0x60/0xe0
[   59.524641][ T6811]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   59.530534][ T6811] RIP: 0033:0x440249
[   59.534401][ T6811] Code: Bad RIP value.
[   59.538444][ T6811] RSP: 002b:00007ffc38eaac98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   59.546848][ T6811] RAX: ffffffffffffffda RBX: 00007ffc38eaaca0 RCX: 0000000000440249
[   59.554911][ T6811] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
[   59.562861][ T6811] RBP: 00000000006ca018 R08: 000000000000000f R09: 65732f636f72702f
[   59.570814][ T6811] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b30
[   59.578889][ T6811] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000
[   59.586951][ T6811] Modules linked in:
[   59.590972][ T6811] ---[ end trace 5678c85d81679d9f ]---
[   59.596760][ T6811] RIP: 0010:qrtr_endpoint_post+0x92/0x1010
[   59.605672][ T6811] Code: 44 89 e6 e8 30 a6 4f fe 48 85 c0 48 89 c5 0f 84 c4 0e 00 00 e8 9f c4 93 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
[   59.625327][ T6811] RSP: 0018:ffffc90000f87c60 EFLAGS: 00010202
[   59.631495][ T6811] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffffff862fcde2
[   59.639552][ T6811] RDX: 0000000000000002 RSI: ffffffff87e02561 RDI: ffff8880a7cfdd10
[   59.647662][ T6811] RBP: ffff8880a7cfdd00 R08: 0000000000000001 R09: ffff888086d776e3
[   59.655683][ T6811] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   59.663701][ T6811] R13: ffff8880a96efb00 R14: ffffc90000f87ec8 R15: 0000000000000000
[   59.671665][ T6811] FS:  00000000011cf880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   59.680610][ T6811] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.687242][ T6811] CR2: 00000000004551b0 CR3: 00000000a687f000 CR4: 00000000001506e0
[   59.695479][ T6811] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   59.704049][ T6811] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   59.712013][ T6811] Kernel panic - not syncing: Fatal exception
[   59.719306][ T6811] Kernel Offset: disabled
[   59.723626][ T6811] Rebooting in 86400 seconds..