==================================================================
BUG: KASAN: wild-memory-access on address ffe708746d8bf000
Read of size 37 by task syz-executor2/5548
CPU: 0 PID: 5548 Comm: syz-executor2 Not tainted 4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801ab5d7ae8 ffffffff81d93149 ffe708746d8bf000 0000000000000025
 0000000000000000 ffff8801d127ce40 ffe708746d8bf000 ffff8801ab5d7b70
 ffffffff8153d08f 0000000000000000 0000000000000001 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
 [<ffffffff8156d353>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156e8e7>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815724c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815724c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
FAULT_FLAG_ALLOW_RETRY missing 30
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 5744 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d53bf960 ffffffff81d93149 ffff8801d53bfc40 0000000000000000
 ffff8801ab7e6110 ffff8801d53bfb30 ffff8801ab7e6000 ffff8801d53bfb58
 ffffffff81660dc8 ffff8801d53bfab0 ffff8801d235e000 00000001cb554067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff8116a374>] SyS_rt_sigqueueinfo+0x24/0x30 kernel/signal.c:2967
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
binder: 5756:5760 ioctl 4b45 20306000 returned -22
binder: 5756:5760 ioctl 4b45 20306000 returned -22
CPU: 1 PID: 5732 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d979f9a0 ffffffff81d93149 ffff8801d979fc80 0000000000000000
 ffff8801ab7e6110 ffff8801d979fb70 ffff8801ab7e6000 ffff8801d979fb98
 ffffffff81660dc8 ffff8801d979faf0 ffff8801cd719ff8 00000001cb554067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
selinux_nlmsg_perm: 18 callbacks suppressed
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=5815 comm=syz-executor0
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=5835 comm=syz-executor0
device  entered promiscuous mode
device  left promiscuous mode
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: 5997 Comm: syz-executor2 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801ad2d4800 task.stack: ffff8801adbd8000
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] put_page_testzero include/linux/mm.h:445 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] __free_pages+0x21/0x80 mm/page_alloc.c:3901
RSP: 0018:ffff8801adbdfab0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffc900011b9000
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801adbdfac0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff10035b7bf38 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801aa904200 R15: dffffc0000000000
FS:  00007fdd64878700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc085e3ddc CR3: 00000001c8be9000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801adbdfb08 ffff8801aa904358 ffff8801adbdfb20 ffffffff82661ed1
 ffff8801aa904370 ffffed003552086b ffffed003552086e ffff8801aa904368
 dead4ead00000000 ffff8801aa904340 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82661ed1>] sg_remove_scat.isra.20+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff82662295>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff82662359>] sg_new_read.isra.21+0x39/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff82663f36>] sg_read+0x8a6/0x1400 drivers/scsi/sg.c:456
 [<ffffffff8156d353>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156e8e7>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815724c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815724c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: ff 66 0f 1f 84 00 00 00 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  [<ffffffff8144df71>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144df71>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144df71>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144df71>] put_page_testzero include/linux/mm.h:445 [inline]
RIP  [<ffffffff8144df71>] __free_pages+0x21/0x80 mm/page_alloc.c:3901
 RSP <ffff8801adbdfab0>
---[ end trace 1824161ab1aba983 ]---