binder: 6076:6082 transaction failed 29189/-3, size 0-0 line 3128
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x387e/0x4b50 kernel/locking/lockdep.c:3092
Read of size 8 at addr ffff8800b2397238 by task syz-executor5/6081

CPU: 0 PID: 6081 Comm: syz-executor5 Not tainted 4.4.114-ga81d322 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 66b51ee72c746e14 ffff8801d871f630 ffffffff81d0394d
 ffffea0002c8e580 ffff8800b2397238 0000000000000000 ffff8800b2397238
 0000000000000000 ffff8801d871f668 ffffffff814fe1d3 ffff8800b2397238
Call Trace:
 [<ffffffff81d0394d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0394d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fe1d3>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fe6e5>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fe6e5>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fe844>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff8123ac7e>] __lock_acquire+0x387e/0x4b50 kernel/locking/lockdep.c:3092
 [<ffffffff8123d7be>] lock_acquire+0x15e/0x460 kernel/locking/lockdep.c:3592
 [<ffffffff83773ace>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:112 [inline]
 [<ffffffff83773ace>] _raw_spin_lock_irqsave+0x4e/0x70 kernel/locking/spinlock.c:159
 [<ffffffff812200e4>] remove_wait_queue+0x14/0x40 kernel/sched/wait.c:49
 [<ffffffff815f6988>] ep_remove_wait_queue fs/eventpoll.c:530 [inline]
 [<ffffffff815f6988>] ep_unregister_pollwait.isra.6+0xa8/0x220 fs/eventpoll.c:548
 [<ffffffff815f73d1>] ep_remove+0x41/0x290 fs/eventpoll.c:711
 [<ffffffff815f93b5>] eventpoll_release_file+0xc5/0x140 fs/eventpoll.c:935
 [<ffffffff815237d1>] eventpoll_release include/linux/eventpoll.h:61 [inline]
 [<ffffffff815237d1>] __fput+0x521/0x6d0 fs/file_table.c:199
 [<ffffffff81523a05>] ____fput+0x15/0x20 fs/file_table.c:244
 [<ffffffff8118b9d4>] task_work_run+0x104/0x180 kernel/task_work.c:115
 [<ffffffff81132f7a>] exit_task_work include/linux/task_work.h:21 [inline]
 [<ffffffff81132f7a>] do_exit+0x82a/0x2a10 kernel/exit.c:755
 [<ffffffff81139418>] do_group_exit+0x108/0x320 kernel/exit.c:885
 [<ffffffff8115c872>] get_signal+0x4f2/0x1550 kernel/signal.c:2317
 [<ffffffff8100e7fb>] do_signal+0x8b/0x1d40 arch/x86/kernel/signal.c:712
 [<ffffffff810035fa>] exit_to_usermode_loop+0x11a/0x160 arch/x86/entry/common.c:247
 [<ffffffff81006535>] prepare_exit_to_usermode arch/x86/entry/common.c:282 [inline]
 [<ffffffff81006535>] syscall_return_slowpath+0x1b5/0x1f0 arch/x86/entry/common.c:347
 [<ffffffff83774069>] int_ret_from_sys_call+0x25/0xa3

Allocated by task 6081:
 [<ffffffff81035df6>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814fd243>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814fd50d>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814fd50d>] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814f9490>] kmem_cache_alloc_trace+0x100/0x2b0 mm/slub.c:2642
 [<ffffffff82c7c77d>] kmalloc include/linux/slab.h:476 [inline]
 [<ffffffff82c7c77d>] kzalloc include/linux/slab.h:620 [inline]
 [<ffffffff82c7c77d>] binder_get_thread+0x15d/0x750 drivers/android/binder.c:4452
 [<ffffffff82c90a74>] binder_ioctl+0x1c4/0x12e0 drivers/android/binder.c:4727
 [<ffffffff81559a6a>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff81559a6a>] do_vfs_ioctl+0x7aa/0xee0 fs/ioctl.c:607
 [<ffffffff8155a22f>] SYSC_ioctl fs/ioctl.c:622 [inline]
 [<ffffffff8155a22f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
 [<ffffffff83773edf>] entry_SYSCALL_64_fastpath+0x1c/0x98

Freed by task 6081:
 [<ffffffff81035df6>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff814fd243>] save_stack+0x43/0xd0 mm/kasan/kasan.c:512
 [<ffffffff814fdb62>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814fdb62>] kasan_slab_free+0x72/0xc0 mm/kasan/kasan.c:589
 [<ffffffff814fa5fc>] slab_free_hook mm/slub.c:1383 [inline]
 [<ffffffff814fa5fc>] slab_free_freelist_hook mm/slub.c:1405 [inline]
 [<ffffffff814fa5fc>] slab_free mm/slub.c:2859 [inline]
 [<ffffffff814fa5fc>] kfree+0xfc/0x300 mm/slub.c:3749
 [<ffffffff82c75ce1>] binder_free_thread drivers/android/binder.c:4480 [inline]
 [<ffffffff82c75ce1>] binder_thread_dec_tmpref+0x1c1/0x250 drivers/android/binder.c:2036
 [<ffffffff82c7681d>] binder_thread_release+0x27d/0x540 drivers/android/binder.c:4544
 [<ffffffff82c91444>] binder_ioctl+0xb94/0x12e0 drivers/android/binder.c:4760
 [<ffffffff81559a6a>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff81559a6a>] do_vfs_ioctl+0x7aa/0xee0 fs/ioctl.c:607
 [<ffffffff8155a22f>] SYSC_ioctl fs/ioctl.c:622 [inline]
 [<ffffffff8155a22f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
 [<ffffffff83773edf>] entry_SYSCALL_64_fastpath+0x1c/0x98

The buggy address belongs to the object at ffff8800b2397180
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 184 bytes inside of
 512-byte region [ffff8800b2397180, ffff8800b2397380)
The buggy address belongs to the page:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:263 debug_print_object+0x17d/0x220 lib/debugobjects.c:260()
ODEBUG: deactivate not available (active state 0) object type: hrtimer hint: tick_sched_timer+0x0/0x120 kernel/time/tick-sched.c:124