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: 12165 Comm: syz-executor2 Not tainted 4.9.60-gdfe0a9b #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cda26000 task.stack: ffff8801d0230000
device gre0 entered promiscuous mode
RIP: 0010:[<ffffffff826667a2>]  [<ffffffff826667a2>] sg_start_req drivers/scsi/sg.c:1691 [inline]
RIP: 0010:[<ffffffff826667a2>]  [<ffffffff826667a2>] sg_common_write.isra.24+0x382/0x18d0 drivers/scsi/sg.c:777
RSP: 0018:ffff8801d0237908  EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffffc90001175000
RDX: 0000000000000002 RSI: ffff8801d621c39c RDI: ffff8801d621c39a
RBP: ffff8801d0237aa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffed003a046f6d R12: 1ffff1003a046f2f
R13: ffff8801d621c200 R14: ffff8801d0237b68 R15: ffff8801d621c358
FS:  00007f8233630700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdfa31aa50 CR3: 00000001ca876000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801cda26000 ffff8801d621c3e0 ffff880100000026 0000000000000010
 ffff8801d621c39c ffff8801cda20000 ffff880100001770 0000000000000026
 ffffffff838a0363 ffff8801d621c200 ffff8801cda26000 ffff8801fffffffe
Call Trace:
 [<ffffffff8266b6c1>] sg_write+0x6a1/0xaf0 drivers/scsi/sg.c:680
 [<ffffffff81569fa3>] __vfs_write+0x103/0x680 fs/read_write.c:510
 [<ffffffff8156e0c0>] vfs_write+0x170/0x4e0 fs/read_write.c:560
 [<ffffffff81571b79>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff81571b79>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff838aa305>] 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  [<ffffffff826667a2>] sg_start_req drivers/scsi/sg.c:1691 [inline]
RIP  [<ffffffff826667a2>] sg_common_write.isra.24+0x382/0x18d0 drivers/scsi/sg.c:777
 RSP <ffff8801d0237908>
---[ end trace 918c666a76085c74 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..