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BUG: KASAN: use-after-free in __lock_acquire+0x31af/0x3b60 kernel/locking/lockdep.c:3828
Read of size 8 at addr ffff8881cf842910 by task syz-executor.5/10575

CPU: 0 PID: 10575 Comm: syz-executor.5 Not tainted 5.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xef/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0+0x16/0x200 mm/kasan/report.c:374
 __kasan_report.cold+0x37/0x7f mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:639
 __lock_acquire+0x31af/0x3b60 kernel/locking/lockdep.c:3828
 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4485
 __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/0xc50 drivers/input/joystick/xpad.c:1225
 ml_play_effects+0x817/0x1270 drivers/input/ff-memless.c:398
 ml_ff_playback+0x285/0x3d0 drivers/input/ff-memless.c:460
 input_ff_event+0x13a/0x2e0 drivers/input/ff-core.c:286
 input_handle_event+0x732/0x13a0 drivers/input/input.c:375
 input_inject_event+0x305/0x31e drivers/input/input.c:470
 evdev_write+0x2c9/0x410 drivers/input/evdev.c:542
 __vfs_write+0x76/0x100 fs/read_write.c:494
 vfs_write+0x262/0x5c0 fs/read_write.c:558
 ksys_write+0x1e8/0x250 fs/read_write.c:611
 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a919
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbf6f349c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a919
RDX: 0000000000000364 RSI: 00000000200000c0 RDI: 0000000000000006
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbf6f34a6d4
R13: 00000000004cbe90 R14: 00000000004e5ce0 R15: 00000000ffffffff

Allocated by task 10302:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:486
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc_node mm/slub.c:2759 [inline]
 slab_alloc mm/slub.c:2767 [inline]
 kmem_cache_alloc+0xd8/0x2e0 mm/slub.c:2772
 kmem_cache_zalloc include/linux/slab.h:660 [inline]
 __alloc_file+0x21/0x300 fs/file_table.c:101
 alloc_empty_file+0x6d/0x170 fs/file_table.c:151
 path_openat+0xf3/0x3e70 fs/namei.c:3526
 do_filp_open+0x1a1/0x280 fs/namei.c:3567
 do_open_execat+0x122/0x600 fs/exec.c:856
 __do_execve_file.isra.0+0x173c/0x2240 fs/exec.c:1761
 do_execveat_common fs/exec.c:1867 [inline]
 do_execve fs/exec.c:1884 [inline]
 __do_sys_execve fs/exec.c:1960 [inline]
 __se_sys_execve fs/exec.c:1955 [inline]
 __x64_sys_execve+0x8a/0xb0 fs/exec.c:1955
 do_syscall_64+0xb6/0x5c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 16:
 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:335 [inline]
 __kasan_slab_free+0x129/0x170 mm/kasan/common.c:474
 slab_free_hook mm/slub.c:1425 [inline]
 slab_free_freelist_hook mm/slub.c:1458 [inline]
 slab_free mm/slub.c:3005 [inline]
 kmem_cache_free+0xba/0x380 mm/slub.c:3021
 __rcu_reclaim kernel/rcu/rcu.h:222 [inline]
 rcu_do_batch kernel/rcu/tree.c:2183 [inline]
 rcu_core+0x62b/0x1ce0 kernel/rcu/tree.c:2408
 __do_softirq+0x221/0x912 kernel/softirq.c:292

The buggy address belongs to the object at ffff8881cf842780
 which belongs to the cache filp of size 456
The buggy address is located 400 bytes inside of
 456-byte region [ffff8881cf842780, ffff8881cf842948)
The buggy address belongs to the page:
page:ffffea00073e1080 refcount:1 mapcount:0 mapping:ffff8881da11c780 index:0x0 compound_mapcount: 0
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da11c780
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cf842800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cf842880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881cf842900: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
                         ^
 ffff8881cf842980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cf842a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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