binder: 18073:18075 ERROR: BC_REGISTER_LOOPER called without request
=====================================
[ BUG: bad unlock balance detected! ]
4.9.67-gf26d3c7 #106 Not tainted
-------------------------------------
syz-executor3/18066 is trying to release lock ([   97.828270] SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=18077 comm=syz-executor1
binder: 18073:18078 BC_FREE_BUFFER u0000000000000000 no match
binder: 18073:18078 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0
binder: 18073:18078 BC_ACQUIRE_DONE uffffffffffffffff no match
binder: 18073:18078 ERROR: BC_REGISTER_LOOPER called after BC_ENTER_LOOPER
binder: 18073:18087 unknown command 0
binder: 18073:18087 ioctl c0306201 2000a000 returned -22
binder: 18073:18087 got reply transaction with no transaction stack
binder: 18073:18087 transaction failed 29201/-71, size 32-8 line 2923
binder: undelivered TRANSACTION_ERROR: 29201
binder: 18073:18075 ERROR: BC_REGISTER_LOOPER called without request
binder: 18073:18078 BC_FREE_BUFFER u0000000000000000 no match
binder: 18073:18078 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0
binder: 18073:18078 BC_ACQUIRE_DONE uffffffffffffffff no match
binder: 18073:18078 ERROR: BC_REGISTER_LOOPER called after BC_ENTER_LOOPER
binder: 18073:18078 unknown command 0
binder: 18073:18078 ioctl c0306201 2000a000 returned -22
binder: 18073:18075 got reply transaction with no transaction stack
binder: 18073:18075 transaction failed 29201/-71, size 32-8 line 2923
binder: undelivered TRANSACTION_ERROR: 29201
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: 18105 Comm: syz-executor7 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801a6888000 task.stack: ffff8801cf4b0000
RIP: 0010:[<ffffffff8144bc11>] 
 [<ffffffff8144bc11>] __read_once_size include/linux/compiler.h:243 [inline]
 [<ffffffff8144bc11>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
 [<ffffffff8144bc11>] page_ref_count include/linux/page_ref.h:66 [inline]
 [<ffffffff8144bc11>] put_page_testzero include/linux/mm.h:450 [inline]
 [<ffffffff8144bc11>] __free_pages+0x21/0x80 mm/page_alloc.c:3910
RSP: 0018:ffff8801cf4b79b0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffc900012c2000
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801cf4b79c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8801a6888000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801a9b98000 R15: dffffc0000000000
FS:  00007ff033655700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ef0fe0 CR3: 00000001a7304000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801a6888000
 ffff8801a9b98158 ffff8801cf4b7a20 ffffffff8265f731[   97.938984]  ffff8801a9b98170
 ffffed003537302b ffffed003537302e ffff8801a9b98168[   97.938996]  dead4ead00000000
 ffff8801a9b98140 0000000000000000 0000000000000000[   97.939007] Call Trace:
 [<ffffffff8265f731>] sg_remove_scat.isra.20+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff8265faf5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff8265fbb9>] sg_new_read.isra.21+0x39/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff826617ad>] sg_read+0x8bd/0x1440 drivers/scsi/sg.c:456
 [<ffffffff81568cb1>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156cb20>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156cb20>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156cdd4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8156cef6>] do_readv+0xe6/0x250 fs/read_write.c:924
 [<ffffffff815703e7>] SYSC_readv fs/read_write.c:1011 [inline]
 [<ffffffff815703e7>] SyS_readv+0x27/0x30 fs/read_write.c:1008
 [<ffffffff838a9985>] 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 [   97.939369] RIP 
 [<ffffffff8144bc11>] __read_once_size include/linux/compiler.h:243 [inline]
 [<ffffffff8144bc11>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
 [<ffffffff8144bc11>] page_ref_count include/linux/page_ref.h:66 [inline]
 [<ffffffff8144bc11>] put_page_testzero include/linux/mm.h:450 [inline]
 [<ffffffff8144bc11>] __free_pages+0x21/0x80 mm/page_alloc.c:3910
---[ end trace 5c254d418208c866 ]---