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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 ffff8881c78e7110 by task syz-executor.3/13835

CPU: 1 PID: 13835 Comm: syz-executor.3 Not tainted 5.5.0-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:536 [inline]
 smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1137
 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 6a 10 99 fb 48 89 ef e8 32 f2 99 fb f6 c7 02 75 11 53 9d e8 a6 76 b7 fb 65 ff 0d 27 f3 74 7a 5b 5d c3 e8 97 74 b7 fb 53 9d <eb> ed 0f 1f 00 55 48 89 fd 65 ff 05 0d f3 74 7a 45 31 c9 41 b8 01
RSP: 0018:ffff8881cc297cc8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000246 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881ac35884c
RBP: ffff8881d49bc210 R08: ffff8881ac358000 R09: fffffbfff1265a96
R10: fffffbfff1265a95 R11: ffffffff8932d4af R12: 0000000000000000
R13: 0000000000000000 R14: ffff8881d49bc000 R15: ffff8881d49bc210
 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
 input_inject_event+0x214/0x31e drivers/input/input.c:473
 evdev_write+0x2c9/0x410 drivers/input/evdev.c:539
 __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+0xb6/0x5a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b399
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:00007fbb67d75c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbb67d766d4 RCX: 000000000045b399
RDX: 0000000000035000 RSI: 0000000020000040 RDI: 0000000000000009
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000caf R14: 00000000004cd8e4 R15: 000000000075bf2c

Allocated by task 1677:
 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
 kmalloc include/linux/slab.h:556 [inline]
 syslog_print kernel/printk/printk.c:1356 [inline]
 do_syslog kernel/printk/printk.c:1529 [inline]
 do_syslog+0x53b/0x1380 kernel/printk/printk.c:1503
 kmsg_read+0x8a/0xb0 fs/proc/kmsg.c:40
 proc_reg_read+0x1c1/0x280 fs/proc/inode.c:223
 __vfs_read+0x76/0x100 fs/read_write.c:425
 vfs_read+0x1ea/0x430 fs/read_write.c:461
 ksys_read+0x127/0x250 fs/read_write.c:587
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 1677:
 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]
 kfree+0xd5/0x300 mm/slub.c:3976
 syslog_print kernel/printk/printk.c:1415 [inline]
 do_syslog kernel/printk/printk.c:1529 [inline]
 do_syslog+0x1104/0x1380 kernel/printk/printk.c:1503
 kmsg_read+0x8a/0xb0 fs/proc/kmsg.c:40
 proc_reg_read+0x1c1/0x280 fs/proc/inode.c:223
 __vfs_read+0x76/0x100 fs/read_write.c:425
 vfs_read+0x1ea/0x430 fs/read_write.c:461
 ksys_read+0x127/0x250 fs/read_write.c:587
 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 ffff8881c78e7000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 272 bytes inside of
 1024-byte region [ffff8881c78e7000, ffff8881c78e7400)
The buggy address belongs to the page:
page:ffffea00071e3800 refcount:1 mapcount:0 mapping:ffff8881da002280 index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 ffffea00073d8000 0000000600000006 ffff8881da002280
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881c78e7000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881c78e7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881c78e7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff8881c78e7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881c78e7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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