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: 0 PID: 11955 Comm: syz-executor4 Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c8536000 task.stack: ffff8800ad768000
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:ffff8800ad76fb50  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8801cfd74340 RCX: ffffffff825bd793
RDX: 0000000000000000 RSI: ffffc900024c0000 RDI: ffff8801cfd74370
RBP: ffff8800ad76fc58 R08: 000000006374722f R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff10015aedf30 R12: ffff8800b0b52000
R13: 0000000000000000 R14: 000000007fffefdc R15: ffff8801cfd74200
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f57acb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008340008 CR3: 00000001d51c6000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801c85368e0 ffff8801d9badc90 0000000000000014 ffff8801cfd74358
 569306787714720c ffff8801cfd74368 000000007ffff000 0000000000000000
 ffffffff00000000 0000000000001000 1ffff10015aedf76 00000000200000e4
Call Trace:
 [<ffffffff8151d873>] __vfs_read+0x103/0x440 fs/read_write.c:432
 [<ffffffff8151f713>] vfs_read+0x123/0x3a0 fs/read_write.c:454
 [<ffffffff81522059>] SYSC_read fs/read_write.c:569 [inline]
 [<ffffffff81522059>] SyS_read+0xd9/0x1b0 fs/read_write.c:562
 [<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 <ffff8800ad76fb50>
---[ end trace bd92e2240d5458fb ]---