binder: BINDER_SET_CONTEXT_MGR already set
binder: 18101:18106 ioctl 40046207 0 returned -16
==================================================================
BUG: KASAN: slab-out-of-bounds in __lock_acquire+0x2eff/0x3640 kernel/locking/lockdep.c:3224
Read of size 8 at addr ffff8801d6361f78 by task syz-executor2/18120

CPU: 0 PID: 18120 Comm: syz-executor2 Not tainted 4.9.77-ge12a9c4 #18
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b351f840 ffffffff81d941c9 ffffea000758d840 ffff8801d6361f78
 0000000000000000 ffff8801d6361f78 ffff8801d6361f78 ffff8801b351f878
 ffffffff8153db93 ffff8801d6361f78 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81d941c9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d941c9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153db93>] print_address_description+0x73/0x280 mm/kasan/report.c:252
 [<ffffffff8153e0b5>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff8153e0b5>] kasan_report+0x275/0x360 mm/kasan/report.c:408
 [<ffffffff8153e214>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff8123ec9f>] __lock_acquire+0x2eff/0x3640 kernel/locking/lockdep.c:3224
 [<ffffffff8123fe1e>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838b2b4e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838b2b4e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff826672d0>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff826678e5>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff8266971c>] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527
 [<ffffffff8156b9e3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156f77e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff815734a9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815734a9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838b2c2e>] entry_SYSCALL_64_fastpath+0x29/0xe8

Allocated by task 18120:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:505
 set_track mm/kasan/kasan.c:517 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:609
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:547
 slab_post_alloc_hook mm/slab.h:417 [inline]
 slab_alloc_node mm/slub.c:2715 [inline]
 slab_alloc mm/slub.c:2723 [inline]
 kmem_cache_alloc+0xba/0x290 mm/slub.c:2728
 fasync_alloc fs/fcntl.c:604 [inline]
 fasync_add_entry fs/fcntl.c:662 [inline]
 fasync_helper+0x37/0xb0 fs/fcntl.c:691
 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203
 ioctl_fioasync fs/ioctl.c:534 [inline]
 do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639
 SYSC_ioctl fs/ioctl.c:694 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 entry_SYSCALL_64_fastpath+0x29/0xe8

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801d6361f00
 which belongs to the cache fasync_cache of size 96
The buggy address is located 24 bytes to the right of
 96-byte region [ffff8801d6361f00, ffff8801d6361f60)
The buggy address belongs to the page:
page:ffffea000758d840 count:1 mapcount:0 mapping:          (null) index:0xffff8801d6361580
flags: 0x8000000000000080(slab)
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d6361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801d6361e80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8801d6361f00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                                ^
 ffff8801d6361f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801d6362000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================