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: 5592 Comm: syz-executor5 Not tainted 4.9.57-g9eaaf14 #69
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801a7c3b000 task.stack: ffff8801a8f50000
RIP: 0010:[<ffffffff82666ee2>]  [<ffffffff82666ee2>] sg_start_req drivers/scsi/sg.c:1691 [inline]
RIP: 0010:[<ffffffff82666ee2>]  [<ffffffff82666ee2>] sg_common_write.isra.24+0x382/0x18d0 drivers/scsi/sg.c:777
RSP: 0018:ffff8801a8f57908  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffc900021d6000
RDX: 0000000000000002 RSI: ffff8801a83e019c RDI: ffff8801a83e019a
RBP: ffff8801a8f57aa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffed00351eaf6d R12: 1ffff100351eaf2f
R13: ffff8801a83e0000 R14: ffff8801a8f57b68 R15: ffff8801a83e0158
FS:  00007f8211b96700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000ff4 CR3: 00000001a84b7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8801a83e01e0 0000000000000026 0000000000000010
 ffff8801a83e019c 0000000000000000 ffff880100001770 0000000000000026
 0000000000000000 ffff8801a83e0000 ffff8801a8f57998 00000000fffffffe
Call Trace:
 [<ffffffff8266be01>] sg_write+0x6a1/0xaf0 drivers/scsi/sg.c:680
 [<ffffffff8156a383>] __vfs_write+0x103/0x680 fs/read_write.c:510
 [<ffffffff8156e4a0>] vfs_write+0x170/0x4e0 fs/read_write.c:560
 [<ffffffff81571f59>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff81571f59>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff838aa045>] entry_SYSCALL_64_fastpath+0x23/0xc6
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  [<ffffffff82666ee2>] sg_start_req drivers/scsi/sg.c:1691 [inline]
RIP  [<ffffffff82666ee2>] sg_common_write.isra.24+0x382/0x18d0 drivers/scsi/sg.c:777
 RSP <ffff8801a8f57908>
---[ end trace 6b0b9abd89f5a633 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..