sg_write: data in/out 36090/116 bytes for SCSI command 0x67-- guessing data in;
   program syzkaller395696 not setting count and/or reply_len properly
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: 3339 Comm: syzkaller395696 Not tainted 4.9.70-gc14c7b3 #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801ca8b0000 task.stack: ffff8801cad40000
RIP: 0010:[<ffffffff826627bc>]  [<ffffffff826627bc>] sg_read_oxfer drivers/scsi/sg.c:1976 [inline]
RIP: 0010:[<ffffffff826627bc>]  [<ffffffff826627bc>] sg_read+0xd0c/0x1440 drivers/scsi/sg.c:520
RSP: 0018:ffff8801cad47a50  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff82662783
RDX: 0000000000000000 RSI: 000000000000001a RDI: ffff8801c8dd8170
RBP: ffff8801cad47b58 R08: 0000000000000000 R09: ffffed00391e5259
R10: 0000000000000005 R11: ffffed00391e5258 R12: 0000000000001000
R13: 0000000000000000 R14: ffff8801c8f292a0 R15: ffff8801c8dd8140
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008b58840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020f93fcb CR3: 00000001c0c67000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801d22e8580 ffff8801cad47a80 ffff8801c8dd8158 ffff88010000001a
 0000000000000000 ffff8801c8dd8168 000000000000003e 0000000000000246
 ffff8801d1465180 1ffff100395a8f56 0000000020f93fcb 0000000020f93fef
Call Trace:
 [<ffffffff81569121>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156e042>] do_loop_readv_writev fs/read_write.c:1105 [inline]
 [<ffffffff8156e042>] compat_do_readv_writev+0x522/0x760 fs/read_write.c:1099
 [<ffffffff8156e363>] compat_readv+0xe3/0x150 fs/read_write.c:1128
 [<ffffffff8156e4c4>] do_compat_readv+0xf4/0x1d0 fs/read_write.c:1148
 [<ffffffff81570a36>] C_SYSC_readv fs/read_write.c:1160 [inline]
 [<ffffffff81570a36>] compat_SyS_readv+0x26/0x30 fs/read_write.c:1156
 [<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
 [<ffffffff838aba61>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 df 05 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 
RIP  [<ffffffff826627bc>] sg_read_oxfer drivers/scsi/sg.c:1976 [inline]
RIP  [<ffffffff826627bc>] sg_read+0xd0c/0x1440 drivers/scsi/sg.c:520
 RSP <ffff8801cad47a50>
---[ end trace da4744d3ee993402 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..