sg_write: data in/out 1219236422/100 bytes for SCSI command 0xc4-- guessing data in;
   program syz-executor3 not setting count and/or reply_len properly
==================================================================
BUG: KASAN: wild-memory-access on address ffe708746fd67000
Read of size 4060 by task syz-executor3/8624
CPU: 1 PID: 8624 Comm: syz-executor3 Not tainted 4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d9467628 ffffffff81d93149 ffe708746fd67000 0000000000000fdc
 0000000000000000 ffff8801a9f6af00 ffe708746fd67000 ffff8801d94676b0
 ffffffff8153d08f 0000000000000000 0000000000000000 ffffffff826648db
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153d08f>] kasan_report_error mm/kasan/report.c:284 [inline]
 [<ffffffff8153d08f>] kasan_report.part.1+0x40f/0x500 mm/kasan/report.c:309
 [<ffffffff8153d460>] kasan_report+0x20/0x30 mm/kasan/report.c:296
 [<ffffffff8153bda7>] check_memory_region_inline mm/kasan/kasan.c:308 [inline]
 [<ffffffff8153bda7>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:315
 [<ffffffff8153be11>] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:320
 [<ffffffff826648db>] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
 [<ffffffff826648db>] sg_read_oxfer drivers/scsi/sg.c:1978 [inline]
 [<ffffffff826648db>] sg_read+0x124b/0x1400 drivers/scsi/sg.c:520
 [<ffffffff8156b741>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156f510>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156f510>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156f7c4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8160e4ff>] kernel_readv fs/splice.c:363 [inline]
 [<ffffffff8160e4ff>] default_file_splice_read+0x43f/0x7a0 fs/splice.c:435
 [<ffffffff8160d5fa>] do_splice_to+0x10a/0x160 fs/splice.c:899
 [<ffffffff8161337f>] do_splice fs/splice.c:1192 [inline]
 [<ffffffff8161337f>] SYSC_splice fs/splice.c:1416 [inline]
 [<ffffffff8161337f>] SyS_splice+0xf5f/0x1520 fs/splice.c:1399
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
sg_write: data in/out 1219236422/100 bytes for SCSI command 0xc4-- guessing data in;
   program syz-executor3 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: 8630 Comm: syz-executor3 Tainted: G    B           4.9.52-g9b2b081 #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c7e26000 task.stack: ffff8801d0700000
RIP: 0010:[<ffffffff82664351>]  [<ffffffff82664351>] sg_read_oxfer drivers/scsi/sg.c:1976 [inline]
RIP: 0010:[<ffffffff82664351>]  [<ffffffff82664351>] sg_read+0xcc1/0x1400 drivers/scsi/sg.c:520
RSP: 0018:ffff8801d0707700  EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900059cb000
RDX: 0000000000000000 RSI: 0000000000000fdc RDI: ffff8801cc32a270
RBP: ffff8801d0707808 R08: 0000000000000000 R09: ffffed003a2b2e59
R10: 0000000000000005 R11: ffffed003a2b2e58 R12: 0000000000001000
R13: 0000000000000000 R14: ffff8801d15972a0 R15: ffff8801cc32a240
FS:  00007fe77bec5700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a6fa18 CR3: 00000001c66d8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffea00073aaec0 ffff8801d0707758 ffff8801cc32a258 ffffffff00000fdc
 ffff8801ceabb880 ffff8801cc32a268 0000000000001000 0000000000000246
 ffff8801d1bf5900 1ffff1003a0e0eec ffff8801aa7f7000 ffff8801aa7f7024
Call Trace:
 [<ffffffff8156b741>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156f510>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156f510>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156f7c4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8160e4ff>] kernel_readv fs/splice.c:363 [inline]
 [<ffffffff8160e4ff>] default_file_splice_read+0x43f/0x7a0 fs/splice.c:435
 [<ffffffff8160d5fa>] do_splice_to+0x10a/0x160 fs/splice.c:899
 [<ffffffff8161337f>] do_splice fs/splice.c:1192 [inline]
 [<ffffffff8161337f>] SYSC_splice fs/splice.c:1416 [inline]
 [<ffffffff8161337f>] SyS_splice+0xf5f/0x1520 fs/splice.c:1399
 [<ffffffff838ac645>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 19 07 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 ed 06 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 
RIP  [<ffffffff82664351>] sg_read_oxfer drivers/scsi/sg.c:1976 [inline]
RIP  [<ffffffff82664351>] sg_read+0xcc1/0x1400 drivers/scsi/sg.c:520
 RSP <ffff8801d0707700>
---[ end trace 6a23e7ba9f8b2f86 ]---