VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000
VMExit: intr_info=00000000 errcode=00000000 ilen=00000007
kasan: GPF could be caused by NULL-ptr deref or user memory access
        reason=80000021 qualification=0000000000000000
IDTVectoring: info=00000000 errcode=00000000
general protection fault: 0000 [#1] SMP KASAN
TSC Offset = 0xffffffb2919eef02
Dumping ftrace buffer:
   (ftrace buffer empty)
EPT pointer = 0x00000001b85e501e
Modules linked in:
CPU: 0 PID: 11956 Comm: syz-executor7 Not tainted 4.17.0-rc1+ #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
binder: 11934:11965 got reply transaction with no transaction stack
RIP: 0010:loop_set_fd drivers/block/loop.c:879 [inline]
RIP: 0010:lo_ioctl+0x18e0/0x1ec0 drivers/block/loop.c:1375
RSP: 0018:ffff88018c307948 EFLAGS: 00010202
binder: 11934:11965 transaction failed 29201/-71, size 0-0 line 2763
RAX: 0000000000000037 RBX: ffff8801d2e09680 RCX: dffffc0000000000
RDX: 0000000000000046 RSI: ffffffff849adc9f RDI: 00000000000001b8
RBP: ffff88018c3079c0 R08: ffff880187f68280 R09: ffffed003b6046c2
R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8801c9788160 R15: ffff8801c9788080
FS:  00007fd7c227d700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
binder: undelivered TRANSACTION_ERROR: 29201
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bc22000 CR3: 00000001bba39000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
binder: 11971:11972 got reply transaction with no transaction stack
 __blkdev_driver_ioctl block/ioctl.c:303 [inline]
 blkdev_ioctl+0x9b6/0x2020 block/ioctl.c:601
binder: 11971:11972 transaction failed 29201/-71, size 0-0 line 2763
 block_ioctl+0xee/0x130 fs/block_dev.c:1877
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
 __do_sys_ioctl fs/ioctl.c:708 [inline]
 __se_sys_ioctl fs/ioctl.c:706 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455329
RSP: 002b:00007fd7c227cc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd7c227d6d4 RCX: 0000000000455329
RDX: 0000000000000013 RSI: 0000000000004c00 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000285 R14: 00000000006f6d18 R15: 0000000000000000
Code: e8 03 80 3c 08 00 0f 85 a0 03 00 00 4d 8b ad f0 00 00 00 48 b9 00 00 00 00 00 fc ff df 49 8d bd b8 01 00 00 48 89 f8 48 c1 e8 03 <80> 3c 08 00 0f 85 6d 03 00 00 4d 8b ad b8 01 00 00 48 b9 00 00 
RIP: loop_set_fd drivers/block/loop.c:879 [inline] RSP: ffff88018c307948
RIP: lo_ioctl+0x18e0/0x1ec0 drivers/block/loop.c:1375 RSP: ffff88018c307948
---[ end trace f1eb55d864523580 ]---