program syzkaller318247 not setting count and/or reply_len properly
sg_write: data in/out 36090/16 bytes for SCSI command 0x67-- guessing data in;
   program syzkaller318247 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: 0 PID: 3356 Comm: syzkaller318247 Not tainted 4.9.75-g5f5e5d4 #17
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c7cbc800 task.stack: ffff8801cabb0000
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
RSP: 0018:ffff8801cabb7940  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266631b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c
RBP: ffff8801cabb7950 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801c8772100 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77aab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020bb7000 CR3: 00000001c7d14000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801c7cbc800 ffff8801c8772258 ffff8801cabb79b0 ffffffff82666341
 ffff8801c8772270 ffffed00390ee44b ffffed00390ee44e ffff8801c8772268
 dead4ead00000000 ffff8801c8772240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82666341>] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff82666705>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff826667c9>] sg_new_read.isra.20+0x39/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff826683bd>] sg_read+0x8bd/0x1440 drivers/scsi/sg.c:456
 [<ffffffff8156b481>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff815703a2>] do_loop_readv_writev fs/read_write.c:1105 [inline]
 [<ffffffff815703a2>] compat_do_readv_writev+0x522/0x760 fs/read_write.c:1099
 [<ffffffff815706c3>] compat_readv+0xe3/0x150 fs/read_write.c:1128
 [<ffffffff81570824>] do_compat_readv+0xf4/0x1d0 fs/read_write.c:1148
 [<ffffffff81572d96>] C_SYSC_readv fs/read_write.c:1160 [inline]
 [<ffffffff81572d96>] 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
 [<ffffffff838b2334>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127
Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d 
RIP  [<ffffffff8144dbc1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144dbc1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144dbc1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144dbc1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144dbc1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
 RSP <ffff8801cabb7940>
---[ end trace 281d27795fbbb0e4 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..