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: 17530 Comm: syz-executor0 Not tainted 4.9.86-gd3a2afb #51
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cf2ce000 task.stack: ffff8801ceff8000
RIP: 0010:[<ffffffff8266fbf2>]  [<ffffffff8266fbf2>] sg_start_req drivers/scsi/sg.c:1680 [inline]
RIP: 0010:[<ffffffff8266fbf2>]  [<ffffffff8266fbf2>] sg_common_write.isra.23+0x382/0x18c0 drivers/scsi/sg.c:776
RSP: 0018:ffff8801cefff8b0  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8266f90a
RDX: 0000000000000002 RSI: ffff8801d874439c RDI: ffff8801d874439a
RBP: ffff8801cefffa48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffed0039dfff62 R12: 1ffff10039dfff24
R13: ffff8801d8744200 R14: ffff8801cefffb10 R15: ffff8801d8744358
FS:  00007fce0f0e0700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c000 CR3: 00000001cea5a000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000007 ffff8801d87443e0 ffff88017fffefd6 0000000000000010
 ffff8801d874439c ffff8801cf2c0000 ffff880100001770 000000007fffefd6
 ffff8801cf2ce000 ffff8801d8744200 ffffffff85902740 ffff8801fffffffe
Call Trace:
 [<ffffffff82674b2b>] sg_write+0x6bb/0xb40 drivers/scsi/sg.c:679
 [<ffffffff8156e653>] __vfs_write+0x103/0x680 fs/read_write.c:507
 [<ffffffff81570339>] vfs_write+0x189/0x530 fs/read_write.c:557
 [<ffffffff81573df9>] SYSC_write fs/read_write.c:604 [inline]
 [<ffffffff81573df9>] SyS_write+0xd9/0x1b0 fs/read_write.c:596
 [<ffffffff81006504>] do_syscall_64+0x1a4/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b5613>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
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 14 15 00 00 48 8b 85 c8 fe ff ff 48 8b 58 10 
RIP  [<ffffffff8266fbf2>] sg_start_req drivers/scsi/sg.c:1680 [inline]
RIP  [<ffffffff8266fbf2>] sg_common_write.isra.23+0x382/0x18c0 drivers/scsi/sg.c:776
 RSP <ffff8801cefff8b0>
---[ end trace f51c285c64c0a1c3 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..