Warning: Permanently added '10.128.0.144' (ECDSA) to the list of known hosts.
syzkaller login: [   33.134082] IPVS: ftp: loaded support on port[0] = 21
executing program
[   33.233451] ------------[ cut here ]------------
[   33.238218] kernel BUG at drivers/dma-buf/dma-buf.c:68!
[   33.244251] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   33.249609] Modules linked in:
[   33.252789] CPU: 0 PID: 7966 Comm: syz-executor638 Not tainted 4.14.275-syzkaller #0
[   33.260642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.269999] task: ffff888097df6300 task.stack: ffff8880b3460000
[   33.276043] RIP: 0010:dma_buf_release+0x313/0x5c0
[   33.280860] RSP: 0018:ffff8880b3467db8 EFLAGS: 00010297
[   33.286226] RAX: ffff888097df6300 RBX: ffff8880b514c800 RCX: 1ffffffff17f627c
[   33.293486] RDX: 0000000000000000 RSI: ffff8880b514c800 RDI: ffff88809ab20a78
[   33.300728] RBP: ffff88809ab20900 R08: 0000000000000000 R09: 0000000000000000
[   33.307975] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b514c828
[   33.315261] R13: ffff8880b514c87c R14: ffffffff8398b080 R15: ffff8880b514c810
[   33.322505] FS:  00005555568b0300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
[   33.330714] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.336568] CR2: 00007ff4df277140 CR3: 00000000af06d000 CR4: 00000000003406f0
[   33.343813] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.351061] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.358305] Call Trace:
[   33.360870]  ? ima_file_free+0x4f/0x330
[   33.364818]  ? dma_buf_detach+0x240/0x240
[   33.368939]  __fput+0x25f/0x7a0
[   33.372202]  task_work_run+0x11f/0x190
[   33.376066]  exit_to_usermode_loop+0x1ad/0x200
[   33.380624]  do_syscall_64+0x4a3/0x640
[   33.384486]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   33.389647] RIP: 0033:0x7ff4df1c45a3
[   33.393332] RSP: 002b:00007ffcc788e568 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   33.401012] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007ff4df1c45a3
[   33.408269] RDX: 0000000020000000 RSI: 00000000c00464b4 RDI: 0000000000000003
[   33.415512] RBP: 00007ffcc788e578 R08: 00007ff4df273e40 R09: 00007ff4df273e40
[   33.422755] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcc788e580
[   33.429996] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.437258] Code: 31 e4 e8 21 49 b4 fd 48 89 ef e8 89 15 e6 fd e8 c4 8e bc fd 44 89 e0 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 ad 8e bc fd <0f> 0b e8 a6 8e bc fd e8 71 6d ad fd 48 8d bd 38 02 00 00 48 b8 
[   33.456327] RIP: dma_buf_release+0x313/0x5c0 RSP: ffff8880b3467db8
[   33.468286] ---[ end trace 0dfc979aa52f087f ]---
[   33.473066] Kernel panic - not syncing: Fatal exception
[   33.478585] Kernel Offset: disabled
[   33.482189] Rebooting in 86400 seconds..