kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 30784 Comm: syz-executor2 Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cc070000 task.stack: ffff8801d8c10000
RIP: 0010:[<ffffffff825bd7cc>]  [<ffffffff825bd7cc>] sg_read_oxfer drivers/scsi/sg.c:1978 [inline]
RIP: 0010:[<ffffffff825bd7cc>]  [<ffffffff825bd7cc>] sg_read+0xd3c/0x14d0 drivers/scsi/sg.c:530
RSP: 0018:ffff8801d8c17a80  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8801d3ce2240 RCX: ffffffff825bd793
RDX: 0000000000000000 RSI: ffffc900054a8000 RDI: ffff8801d3ce2270
RBP: ffff8801d8c17b88 R08: 0000000000007265 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff1003b182f16 R12: ffff8800ae70ec00
R13: 0000000000000000 R14: 000000000000002b R15: ffff8801d3ce2100
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f5774b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007fb2635d4000 CR3: 00000001d4ba8000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff812daf5c ffff8801c8167a38 ffff8801d94c1da8 ffff8801d3ce2258
 ffffffff812db683 ffff8801d3ce2268 000000000000004f 0000000002000000
 1ffff10000000000 0000000000001000 1ffff1003b182f5c 0000000020000ae4
Call Trace:
 [<ffffffff8151e141>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff81520cdf>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520eb9>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff81523228>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff81523228>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff8377b2aa>] sysenter_flags_fixed+0xd/0x17
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 ad 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 28 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 81 06 00 00 4d 8b 6d 00 4d 85 ed 0f 84 46 03 
RIP  [<ffffffff825bd7cc>] sg_read_oxfer drivers/scsi/sg.c:1978 [inline]
RIP  [<ffffffff825bd7cc>] sg_read+0xd3c/0x14d0 drivers/scsi/sg.c:530
 RSP <ffff8801d8c17a80>
---[ end trace f0fc59ac74d94cd3 ]---