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: 12903 Comm: syz-executor7 Not tainted 4.9.80-g20c8a00 #38
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801b5ce0000 task.stack: ffff8801bd718000
RIP: 0010:[<ffffffff8266ed82>]  [<ffffffff8266ed82>] sg_start_req drivers/scsi/sg.c:1680 [inline]
RIP: 0010:[<ffffffff8266ed82>]  [<ffffffff8266ed82>] sg_common_write.isra.23+0x382/0x18c0 drivers/scsi/sg.c:776
RSP: 0018:ffff8801bd71f8a0  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffffff8266ea9a
RDX: 0000000000000002 RSI: ffff8801ae40c39c RDI: ffff8801ae40c39a
RBP: ffff8801bd71fa38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffed0037ae3f60 R12: 1ffff10037ae3f22
R13: ffff8801ae40c200 R14: ffff8801bd71fb00 R15: ffff8801ae40c358
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f6f56b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020004ff8 CR3: 00000001c87b8000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000007 ffff8801ae40c3e0 ffff880100000010 0000000000000010
 ffff8801ae40c39c ffff8801b5ce0000 ffff880100001770 0000000000000010
 ffff8801b5ce0000 ffff8801ae40c200 ffffffff858fe7c0 ffff8801fffffffe
Call Trace:
 [<ffffffff82673cb8>] sg_write+0x6b8/0xb30 drivers/scsi/sg.c:679
 [<ffffffff8156e4e3>] __vfs_write+0x103/0x680 fs/read_write.c:510
 [<ffffffff815701c9>] vfs_write+0x189/0x530 fs/read_write.c:560
 [<ffffffff81573cb9>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff81573cb9>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838b4db4>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127
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  [<ffffffff8266ed82>] sg_start_req drivers/scsi/sg.c:1680 [inline]
RIP  [<ffffffff8266ed82>] sg_common_write.isra.23+0x382/0x18c0 drivers/scsi/sg.c:776
 RSP <ffff8801bd71f8a0>
---[ end trace 4e6908e887be8d59 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..