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BUG: KASAN: use-after-free in __lock_acquire+0x31af/0x3b60 kernel/locking/lockdep.c:3827
Read of size 8 at addr ffff8881c880c110 by task syz-executor.4/1820

CPU: 1 PID: 1820 Comm: syz-executor.4 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xef/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:374
 __kasan_report.cold+0x37/0x77 mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:641
 __lock_acquire+0x31af/0x3b60 kernel/locking/lockdep.c:3827
 lock_acquire+0x130/0x340 kernel/locking/lockdep.c:4484
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x32/0x50 kernel/locking/spinlock.c:159
 xpad_play_effect+0xfe/0xcc0 drivers/input/joystick/xpad.c:1225
 ml_play_effects+0x817/0x1270 drivers/input/ff-memless.c:398
 ml_effect_timer+0x5d/0x90 drivers/input/ff-memless.c:412
 call_timer_fn+0x195/0x6f0 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1786
 __do_softirq+0x21e/0x950 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x178/0x1a0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1146
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x3b/0x40 kernel/locking/spinlock.c:191
Code: e8 5a 3f 97 fb 48 89 ef e8 22 21 98 fb f6 c7 02 75 11 53 9d e8 76 a8 b5 fb 65 ff 0d 47 10 73 7a 5b 5d c3 e8 67 a6 b5 fb 53 9d <eb> ed 0f 1f 00 55 48 89 fd 65 ff 05 2d 10 73 7a 45 31 c9 41 b8 01
RSP: 0018:ffff8881ae3ffc10 EFLAGS: 00000296 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000296 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881ce5c084c
RBP: ffff8881d07e78e0 R08: ffff8881ce5c0000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881ce5c04d8
 do_wait+0x320/0x9c0 kernel/exit.c:1469
 kernel_wait4+0x14c/0x260 kernel/exit.c:1617
 __do_sys_wait4+0x147/0x160 kernel/exit.c:1629
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4162ea
Code: 0f 83 6a 18 00 00 c3 66 0f 1f 84 00 00 00 00 00 8b 05 8e 21 87 00 85 c0 75 36 45 31 d2 48 63 d2 48 63 ff b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 d4 ff ff ff f7
RSP: 002b:00007ffe64f514b8 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000000a4c23 RCX: 00000000004162ea
RDX: 0000000040000001 RSI: 00007ffe64f514f0 RDI: ffffffffffffffff
RBP: 0000000000000352 R08: 0000000000000001 R09: 00000000024c1940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 00007ffe64f514f0 R14: 00000000000a46d0 R15: 00007ffe64f51500

Allocated by task 240:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc mm/kasan/common.c:515 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:488
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2778 [inline]
 slab_alloc mm/slub.c:2786 [inline]
 kmem_cache_alloc+0xd8/0x300 mm/slub.c:2791
 getname_flags fs/namei.c:138 [inline]
 getname_flags+0xd2/0x5b0 fs/namei.c:128
 getname fs/namei.c:209 [inline]
 do_renameat2+0x1c5/0xbb0 fs/namei.c:4626
 __do_sys_rename fs/namei.c:4747 [inline]
 __se_sys_rename fs/namei.c:4745 [inline]
 __x64_sys_rename+0x5d/0x80 fs/namei.c:4745
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 240:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 kasan_set_free_info mm/kasan/common.c:337 [inline]
 __kasan_slab_free+0x117/0x160 mm/kasan/common.c:476
 slab_free_hook mm/slub.c:1444 [inline]
 slab_free_freelist_hook mm/slub.c:1477 [inline]
 slab_free mm/slub.c:3024 [inline]
 kmem_cache_free+0x9b/0x360 mm/slub.c:3040
 putname+0xe1/0x120 fs/namei.c:259
 do_renameat2+0x267/0xbb0 fs/namei.c:4720
 __do_sys_rename fs/namei.c:4747 [inline]
 __se_sys_rename fs/namei.c:4745 [inline]
 __x64_sys_rename+0x5d/0x80 fs/namei.c:4745
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8881c880b300
 which belongs to the cache names_cache of size 4096
The buggy address is located 3600 bytes inside of
 4096-byte region [ffff8881c880b300, ffff8881c880c300)
The buggy address belongs to the page:
page:ffffea0007220200 refcount:1 mapcount:0 mapping:ffff8881da11c000 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da11c000
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881c880c000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881c880c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881c880c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff8881c880c180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881c880c200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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