binder: 7964:7967 got transaction to context manager from process owning it
input: syz1 as /devices/virtual/input/input28
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: 7971 Comm: syz-executor4 Not tainted 4.9.124+ #38
task: ffff8801aa0017c0 task.stack: ffff8801aa038000
RIP: 0010:[<ffffffff81d81a98>]  [<ffffffff81d81a98>] is_loop_device drivers/block/loop.c:645 [inline]
RIP: 0010:[<ffffffff81d81a98>]  [<ffffffff81d81a98>] loop_validate_file+0x208/0x400 drivers/block/loop.c:656
RSP: 0018:ffff8801aa03fc80  EFLAGS: 00010206
RAX: 0000000000000036 RBX: dffffc0000000000 RCX: ffffc90005aaa000
RDX: 0000000000000091 RSI: ffffffff81d81a68 RDI: 00000000000001b0
RBP: ffff8801aa03fc98 R08: ffff8801aa002070 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8801d7d8ed40 R14: ffff8801d7d8ed40 R15: ffff8801d6313758
FS:  0000000000000000(0000) GS:ffff8801db600000(0063) knlGS:00000000f579eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000031c22000 CR3: 00000001cfcac000 CR4: 00000000001606b0
Stack:
 ffff8801d6313600 ffff8801c8a3a000 0000000000000004 ffff8801aa03fd20
 ffffffff81d886dd ffff8801ffffffff ffff8801d6313610 ffff8801d63053e0
 ffff8801d6313618 ffff8801d6634910 0000000000000000 965178a8ba431c1c
Call Trace:
 [<ffffffff81d886dd>] loop_change_fd drivers/block/loop.c:702 [inline]
 [<ffffffff81d886dd>] lo_ioctl+0x3ed/0x1670 drivers/block/loop.c:1359
 [<ffffffff81d89a12>] lo_compat_ioctl+0xb2/0x140 drivers/block/loop.c:1549
 [<ffffffff81ae9754>] compat_blkdev_ioctl+0x3a4/0x38c0 block/compat_ioctl.c:751
 [<ffffffff815f2b5d>] C_SYSC_ioctl fs/compat_ioctl.c:1602 [inline]
 [<ffffffff815f2b5d>] compat_SyS_ioctl+0x12d/0x1fd0 fs/compat_ioctl.c:1549
 [<ffffffff81005fd1>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81005fd1>] do_fast_syscall_32+0x2f1/0x860 arch/x86/entry/common.c:387
 [<ffffffff8278cce0>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137
Code: 00 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 f7 01 00 00 4d 8b a4 24 f0 00 00 00 49 8d bc 24 b0 01 00 00 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 cc 01 00 00 4d 8b a4 24 b0 01 00 00 4c 89 e0 
RIP  [<ffffffff81d81a98>] is_loop_device drivers/block/loop.c:645 [inline]
RIP  [<ffffffff81d81a98>] loop_validate_file+0x208/0x400 drivers/block/loop.c:656
 RSP <ffff8801aa03fc80>
---[ end trace 709c1a70316665d1 ]---