kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6867 Comm: syz-executor3 Not tainted 4.9.75-g5f5e5d4 #7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c4a10000 task.stack: ffff8801c30d0000
RIP: 0010:[<ffffffff8266d082>]  [<ffffffff8266d082>] sg_start_req drivers/scsi/sg.c:1691 [inline]
RIP: 0010:[<ffffffff8266d082>]  [<ffffffff8266d082>] sg_common_write.isra.23+0x382/0x18d0 drivers/scsi/sg.c:777
RSP: 0018:ffff8801c30d7908  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000000f7 RCX: ffffffff8266cd9a
RDX: 0000000000000002 RSI: ffff8801c312819c RDI: ffff8801c312819a
RBP: ffff8801c30d7aa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: ffffed003861af6e R12: 1ffff1003861af2f
R13: ffff8801c3128000 R14: ffff8801c30d7b68 R15: ffff8801c3128158
FS:  00007fb7db071700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200f1ff4 CR3: 00000001c3b58000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801c4a10000 ffff8801c31281e0 ffff88010000acfa 0000000000000010
 ffff8801c312819c ffff8801c4a10000 ffff880100001770 000000000000acfa
 ffffffff838a7203 ffff8801c3128000 ffff8801c4a10000 ffff8801fffffffd
Call Trace:
 [<ffffffff826721f8>] sg_write+0x6b8/0xb30 drivers/scsi/sg.c:680
 [<ffffffff8156cd43>] __vfs_write+0x103/0x680 fs/read_write.c:510
 [<ffffffff8156ea29>] vfs_write+0x189/0x530 fs/read_write.c:560
 [<ffffffff81572519>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff81572519>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
Code: 42 66 89 85 90 fe ff ff 48 8b 85 c8 fe ff ff 48 83 c0 10 48 89 c2 48 89 85 80 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 1b 15 00 00 48 8b 85 c8 fe ff ff 48 8b 58 10 
RIP  [<ffffffff8266d082>] sg_start_req drivers/scsi/sg.c:1691 [inline]
RIP  [<ffffffff8266d082>] sg_common_write.isra.23+0x382/0x18d0 drivers/scsi/sg.c:777
 RSP <ffff8801c30d7908>
---[ end trace 905ca255ad8d048a ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..