binder: 17079:17081 transaction failed 29189/-22, size 0-0 line 2788
binder: undelivered TRANSACTION_ERROR: 29189
binder: 17079:17081 transaction failed 29189/-22, size 0-0 line 2788
binder: undelivered TRANSACTION_ERROR: 29189
==================================================================
BUG: KASAN: use-after-free in perf_trace_lock_acquire+0x5b7/0x980 include/trace/events/lock.h:13
Read of size 8 at addr ffff8801d626f0c8 by task syz-executor0/17071
CPU: 0 PID: 17071 Comm: syz-executor0 Not tainted 4.15.0-rc6+ #250
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
print_address_description+0x73/0x250 mm/kasan/report.c:252
kasan_report_error mm/kasan/report.c:351 [inline]
kasan_report+0x25b/0x340 mm/kasan/report.c:409
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430
perf_trace_lock_acquire+0x5b7/0x980 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x394/0x580 kernel/locking/lockdep.c:3913
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
remove_wait_queue+0x81/0x350 kernel/sched/wait.c:50
ep_remove_wait_queue fs/eventpoll.c:595 [inline]
ep_unregister_pollwait.isra.7+0x18c/0x590 fs/eventpoll.c:613
ep_free+0x13f/0x320 fs/eventpoll.c:830
ep_eventpoll_release+0x44/0x60 fs/eventpoll.c:862
__fput+0x327/0x7e0 fs/file_table.c:210
____fput+0x15/0x20 fs/file_table.c:244
task_work_run+0x199/0x270 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x9bb/0x1ad0 kernel/exit.c:865
do_group_exit+0x149/0x400 kernel/exit.c:968
get_signal+0x73f/0x16c0 kernel/signal.c:2335
do_signal+0x90/0x1eb0 arch/x86/kernel/signal.c:809
exit_to_usermode_loop+0x214/0x310 arch/x86/entry/common.c:158
prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
entry_SYSCALL_64_fastpath+0x98/0x9a
RIP: 0033:0x452ac9
RSP: 002b:00007f02abef4c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010
RAX: fffffffffffffe00 RBX: 000000000071bf58 RCX: 0000000000452ac9
RDX: 00000000209effd0 RSI: 00000000c0306201 RDI: 0000000000000017
RBP: 000000000000016d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f02d8
R13: 00000000ffffffff R14: 00007f02abef56d4 R15: 0000000000000002
Allocated by task 17068:
save_stack+0x43/0xd0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
kmem_cache_alloc_trace+0x136/0x750 mm/slab.c:3610
kmalloc include/linux/slab.h:499 [inline]
kzalloc include/linux/slab.h:688 [inline]
binder_get_thread+0x1cf/0x870 drivers/android/binder.c:4219
binder_poll+0x8c/0x390 drivers/android/binder.c:4321
ep_item_poll.isra.10+0xec/0x320 fs/eventpoll.c:884
ep_insert+0x6a3/0x1b10 fs/eventpoll.c:1455
SYSC_epoll_ctl fs/eventpoll.c:2106 [inline]
SyS_epoll_ctl+0x12e4/0x1ab0 fs/eventpoll.c:1992
entry_SYSCALL_64_fastpath+0x23/0x9a
Freed by task 17068:
save_stack+0x43/0xd0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
__cache_free mm/slab.c:3488 [inline]
kfree+0xd6/0x260 mm/slab.c:3803
binder_free_thread drivers/android/binder.c:4246 [inline]
binder_thread_dec_tmpref+0x27f/0x310 drivers/android/binder.c:1821
binder_thread_release+0x27d/0x540 drivers/android/binder.c:4310
binder_ioctl+0xc02/0x1417 drivers/android/binder.c:4527
vfs_ioctl fs/ioctl.c:46 [inline]
do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
entry_SYSCALL_64_fastpath+0x23/0x9a
The buggy address belongs to the object at ffff8801d626f000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 200 bytes inside of
512-byte region [ffff8801d626f000, ffff8801d626f200)
The buggy address belongs to the page:
page:ffffea0007589bc0 count:1 mapcount:0 mapping:ffff8801d626f000 index:0xffff8801d626f280
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffff8801d626f000 ffff8801d626f280 0000000100000005
raw: ffffea000759c220 ffffea0007630860 ffff8801dac00940 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801d626ef80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
ffff8801d626f000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801d626f080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8801d626f100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8801d626f180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================