Warning: Permanently added '10.128.1.60' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.332613] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[   31.340670] IP: vb2_vmalloc_put+0x9/0x60
[   31.344702] PGD 0 P4D 0 
[   31.347348] Oops: 0002 [#1] PREEMPT SMP KASAN
[   31.351814] Modules linked in:
[   31.354983] CPU: 0 PID: 7990 Comm: syz-executor100 Not tainted 4.14.280-syzkaller #0
[   31.362838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.372163] task: ffff8880b6130180 task.stack: ffff888091cd0000
[   31.378211] RIP: 0010:vb2_vmalloc_put+0x9/0x60
[   31.382764] RSP: 0018:ffff888091cd7b98 EFLAGS: 00010297
[   31.388098] RAX: ffff8880b6130180 RBX: ffff8880ab2e3340 RCX: 1ffff11016c2614a
[   31.395340] RDX: 0000000000000000 RSI: ffff8880b6130a30 RDI: 0000000000000000
[   31.402582] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   31.409825] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   31.417071] R13: ffff8880ab2e3354 R14: 0000000000000000 R15: ffffffff84c26540
[   31.424315] FS:  0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
[   31.432601] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.438545] CR2: 0000000000000020 CR3: 0000000008e6a000 CR4: 00000000003406f0
[   31.445789] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.453031] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.460272] Call Trace:
[   31.462840]  __vb2_buf_mem_free+0xfa/0x1d0
[   31.467048]  __vb2_queue_free+0x60d/0x7a0
[   31.471169]  ? vidioc_querycap+0xd0/0xd0
[   31.475202]  ? dev_debug_store+0xe0/0xe0
[   31.479233]  vb2_core_queue_release+0x5b/0x70
[   31.483700]  v4l2_m2m_ctx_release+0x26/0x30
[   31.487993]  vim2m_release+0xd4/0x120
[   31.491769]  v4l2_release+0xf4/0x190
[   31.495458]  __fput+0x25f/0x7a0
[   31.498710]  task_work_run+0x11f/0x190
[   31.502574]  do_exit+0xa44/0x2850
[   31.506000]  ? __do_page_fault+0x571/0xad0
[   31.510205]  ? mm_update_next_owner+0x5b0/0x5b0
[   31.514846]  ? lock_downgrade+0x740/0x740
[   31.518973]  do_group_exit+0x100/0x2e0
[   31.522837]  SyS_exit_group+0x19/0x20
[   31.526610]  ? do_group_exit+0x2e0/0x2e0
[   31.530641]  do_syscall_64+0x1d5/0x640
[   31.534503]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   31.539664] RIP: 0033:0x7f21fb81dd49
[   31.543347] RSP: 002b:00007ffe230a4818 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   31.551025] RAX: ffffffffffffffda RBX: 00007f21fb891270 RCX: 00007f21fb81dd49
[   31.558269] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
[   31.565510] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
[   31.572780] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f21fb891270
[   31.580024] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   31.587268] Code: e9 ca fc ff ff e8 98 99 bc fc e9 96 fc ff ff e8 be 9b bc fc e9 fd fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 fd e8 57 e1 92 fc <f0> ff 4d 20 0f 88 d1 a4 5f 02 74 06 5d e9 45 e1 92 fc e8 40 e1 
[   31.606331] RIP: vb2_vmalloc_put+0x9/0x60 RSP: ffff888091cd7b98
[   31.612358] CR2: 0000000000000020
[   31.615788] ---[ end trace 02330e64897faf14 ]---
[   31.620512] Kernel panic - not syncing: Fatal exception
[   31.626046] Kernel Offset: disabled
[   31.629791] Rebooting in 86400 seconds..