kernel msg: ebtables bug: please report to author: Chains don't start at beginning
WARNING: CPU: 1 PID: 31207 at drivers/staging/android/ion/ion.c:117 ion_buffer_destroy+0xe3/0x1a0 drivers/staging/android/ion/ion.c:117
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 31207 Comm: syz-executor5 Not tainted 4.17.0+ #89
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:ion_buffer_destroy+0xe3/0x1a0 drivers/staging/android/ion/ion.c:117
Code: 85 b9 00 00 00 49 8b 44 24 08 48 89 df e8 b5 ea 00 02 48 89 df e8 dd bb f7 fb 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 8d b5 ba fb <0f> 0b 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 18 48 89 fa 48 c1 
RSP: 0018:ffff8801b168f088 EFLAGS: 00010293
RAX: ffff8801bade2000 RBX: ffff8801d97cc440 RCX: ffffffff85bf8514
RDX: 0000000000000000 RSI: ffffffff85bf8563 RDI: 0000000000000005
RBP: ffff8801b168f0b0 R08: ffff8801bade2000 R09: ffffed003acccafb
R10: ffffed003acccafb R11: ffff8801d66657df R12: ffffffff89722ec0
R13: ffff8801ce7dac80 R14: 0000000000000001 R15: ffff8801d97cc460
 _ion_buffer_destroy+0xda/0x110 drivers/staging/android/ion/ion.c:135
 ion_dma_buf_release+0x37/0x50 drivers/staging/android/ion/ion.c:300
 dma_buf_release+0x1e8/0x7c0 drivers/dma-buf/dma-buf.c:70
 __fput+0x353/0x890 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x1e4/0x290 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1aee/0x2730 kernel/exit.c:865
 do_group_exit+0x16f/0x430 kernel/exit.c:968
 get_signal+0x886/0x1960 kernel/signal.c:2478
 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4559f9
Code: 0f 85 e9 f2 ff ff c6 84 24 60 01 00 00 00 48 8b ac 24 38 01 00 00 48 81 c4 40 01 00 00 c3 c6 84 24 60 01 00 00 00 48 8b ac 24 <38> 01 00 00 48 81 c4 40 01 00 00 c3 c6 84 24 60 01 00 00 01 48 8b 
RSP: 002b:00007ff83ac37ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072bf78 RCX: 00000000004559f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf78
RBP: 000000000072bf78 R08: 0000000000000000 R09: 000000000072bf50
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a3e81f R14: 00007ff83ac389c0 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..