usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
ion_heap_create: Heap type is disabled: 1
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access[    3.931265] ==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x38fd/0x4cf0 kernel/locking/lockdep.c:3092
Read of size 8 at addr ffff8800b9e8c5c8 by task system/344

CPU: 1 PID: 344 Comm: system Not tainted 4.4.202-syzkaller #0
 0000000000000000 88e3730afd8c07f7 ffff8800b9f37a00 ffffffff81a5eceb
 0000000000000000 ffffea0002e7a300 ffff8800b9e8c5c8 0000000000000008
 0000000000000000 ffff8800b9f37a38 ffffffff81475a41 0000000000000000
Call Trace:
 [<ffffffff81a5eceb>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81a5eceb>] dump_stack+0xcb/0x130 lib/dump_stack.c:56
 [<ffffffff81475a41>] print_address_description+0x6f/0x21b mm/kasan/report.c:252
 [<ffffffff81475c79>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff81475c79>] kasan_report mm/kasan/report.c:408 [inline]
 [<ffffffff81475c79>] kasan_report.cold+0x8c/0x2be mm/kasan/report.c:393
 [<ffffffff8146aaa4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff811ff01d>] __lock_acquire+0x38fd/0x4cf0 kernel/locking/lockdep.c:3092
 [<ffffffff81201d5e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3595
 [<ffffffff826a4088>] __raw_spin_lock include/linux/spinlock_api_smp.h:144 [inline]
 [<ffffffff826a4088>] _raw_spin_lock+0x38/0x50 kernel/locking/spinlock.c:151
 [<ffffffff820ada90>] spin_lock include/linux/spinlock.h:302 [inline]
 [<ffffffff820ada90>] ion_heap_freelist_size drivers/staging/android/ion/ion_heap.c:176 [inline]
 [<ffffffff820ada90>] ion_heap_deferred_free+0x100/0x3c0 drivers/staging/android/ion/ion_heap.c:232
 [<ffffffff81132b83>] kthread+0x273/0x310 kernel/kthread.c:211
 [<ffffffff826a5385>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510

Allocated by task 1:
 [<ffffffff8102f176>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff81469af2>] save_stack mm/kasan/kasan.c:512 [inline]
 [<ffffffff81469af2>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff81469af2>] kasan_kmalloc.part.0+0x62/0xf0 mm/kasan/kasan.c:616
 [<ffffffff81469d67>] kasan_kmalloc+0xb7/0xd0 mm/kasan/kasan.c:601
 [<ffffffff81465e83>] kmem_cache_alloc_trace+0x123/0x2d0 mm/slub.c:2642
 [<ffffffff820b0f6b>] kmalloc include/linux/slab.h:476 [inline]
 [<ffffffff820b0f6b>] kzalloc include/linux/slab.h:620 [inline]
 [<ffffffff820b0f6b>] ion_system_heap_create+0x4b/0x2c0 drivers/staging/android/ion/ion_system_heap.c:283
 [<ffffffff820adea6>] ion_heap_create+0x156/0x1b0 drivers/staging/android/ion/ion_heap.c:328
 [<ffffffff8324d675>] ion_dummy_init+0x1e5/0x36d drivers/staging/android/ion/ion_dummy_driver.c:106
 [<ffffffff810004ab>] do_one_initcall+0x13b/0x260 init/main.c:793
 [<ffffffff831d5b01>] do_initcall_level init/main.c:858 [inline]
 [<ffffffff831d5b01>] do_initcalls init/main.c:866 [inline]
 [<ffffffff831d5b01>] do_basic_setup init/main.c:884 [inline]
 [<ffffffff831d5b01>] kernel_init_freeable+0x2fa/0x3c3 init/main.c:1029
 [<ffffffff82692d14>] kernel_init+0x12/0x15e init/main.c:957
 [<ffffffff826a5385>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510

Freed by task 1:
 [<ffffffff8102f176>] save_stack_trace+0x26/0x50 arch/x86/kernel/stacktrace.c:63
 [<ffffffff8146a3f0>] save_stack mm/kasan/kasan.c:512 [inline]
 [<ffffffff8146a3f0>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff8146a3f0>] kasan_slab_free+0xb0/0x190 mm/kasan/kasan.c:589
 [<ffffffff814678d4>] slab_free_hook mm/slub.c:1383 [inline]
 [<ffffffff814678d4>] slab_free_freelist_hook mm/slub.c:1405 [inline]
 [<ffffffff814678d4>] slab_free mm/slub.c:2859 [inline]
 [<ffffffff814678d4>] kfree+0xf4/0x310 mm/slub.c:3749
 [<ffffffff820b127a>] ion_system_heap_destroy+0x9a/0xc0 drivers/staging/android/ion/ion_system_heap.c:323
 [<ffffffff820adf6a>] ion_heap_destroy+0x6a/0xd0 drivers/staging/android/ion/ion_heap.c:369
 [<ffffffff8324d751>] ion_dummy_init+0x2c1/0x36d drivers/staging/android/ion/ion_dummy_driver.c:116
 [<ffffffff810004ab>] do_one_initcall+0x13b/0x260 init/main.c:793
 [<ffffffff831d5b01>] do_initcall_level init/main.c:858 [inline]
 [<ffffffff831d5b01>] do_initcalls init/main.c:866 [inline]
 [<ffffffff831d5b01>] do_basic_setup init/main.c:884 [inline]
 [<ffffffff831d5b01>] kernel_init_freeable+0x2fa/0x3c3 init/main.c:1029
 [<ffffffff82692d14>] kernel_init+0x12/0x15e init/main.c:957
 [<ffffffff826a5385>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510

The buggy address belongs to the object at ffff8800b9e8c500
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 200 bytes inside of
 512-byte region [ffff8800b9e8c500, ffff8800b9e8c700)
The buggy address belongs to the page:
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<          (null)>]           (null)
PGD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.202-syzkaller #0
task: ffff8801da5f0000 task.stack: ffff8801da5f8000
RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
RSP: 0000:ffff8801db607e48  EFLAGS: 00010292
RAX: 0000000000000000 RBX: ffffffff828930e0 RCX: ffffffff81a15a11
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8800b9e8e4f8
RBP: ffff8801db607ee8 R08: ffff8800b9e8e570 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8801db607ec0 R14: ffff8801db607e80 R15: ffff8800b9e8e4f8
FS:  0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000002e0a000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff81a159b6 00000000db607ee8 1ffff1003b6c0fcc 0000000041b58ab3
 ffffffff82c76210 ffffffff81a157d0 ffff8801db607ee8 ffff8801db607e80
 ffff8801db607e80 ffff8801db607ed0 ffffffff81abba8c 0000000000000100
Call Trace:
 <IRQ> 
 [<ffffffff826a7f16>] __do_softirq+0x226/0xa3f kernel/softirq.c:273
 [<ffffffff810e19ca>] invoke_softirq kernel/softirq.c:350 [inline]
 [<ffffffff810e19ca>] irq_exit+0x10a/0x150 kernel/softirq.c:391
 [<ffffffff826a764e>] exiting_irq arch/x86/include/asm/apic.h:652 [inline]
 [<ffffffff826a764e>] smp_apic_timer_interrupt+0x7e/0xb0 arch/x86/kernel/apic/apic.c:964
 [<ffffffff826a69a5>] apic_timer_interrupt+0xa5/0xb0 arch/x86/entry/entry_64.S:744
 <EOI> 
 [<ffffffff8121c1a2>] vprintk_emit+0x3b2/0x820 kernel/printk/printk.c:1837
 [<ffffffff8121c638>] vprintk+0x28/0x30 kernel/printk/printk.c:1848
 [<ffffffff8139dbdd>] printk+0xc2/0xf5 kernel/printk/printk.c:1927
 [<ffffffff810c7b1f>] kasan_die_handler arch/x86/mm/kasan_init_64.c:59 [inline]
 [<ffffffff810c7b1f>] kasan_die_handler.cold+0x1d/0x22 arch/x86/mm/kasan_init_64.c:53
 [<ffffffff81136389>] notifier_call_chain+0xb9/0x1e0 kernel/notifier.c:93
 [<ffffffff811365b7>] __atomic_notifier_call_chain+0x87/0x150 kernel/notifier.c:183
 [<ffffffff81137800>] atomic_notifier_call_chain kernel/notifier.c:193 [inline]
 [<ffffffff81137800>] notify_die+0xe0/0x160 kernel/notifier.c:549
 [<ffffffff8100ee45>] do_general_protection+0x205/0x2b0 arch/x86/kernel/traps.c:461
 [<ffffffff826a61b5>] general_protection+0x25/0x30 arch/x86/entry/entry_64.S:1039
 [<ffffffff8324d751>] ion_dummy_init+0x2c1/0x36d drivers/staging/android/ion/ion_dummy_driver.c:116
 [<ffffffff810004ab>] do_one_initcall+0x13b/0x260 init/main.c:793
 [<ffffffff831d5b01>] do_initcall_level init/main.c:858 [inline]
 [<ffffffff831d5b01>] do_initcalls init/main.c:866 [inline]
 [<ffffffff831d5b01>] do_basic_setup init/main.c:884 [inline]
 [<ffffffff831d5b01>] kernel_init_freeable+0x2fa/0x3c3 init/main.c:1029
 [<ffffffff82692d14>] kernel_init+0x12/0x15e init/main.c:957
 [<ffffffff826a5385>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:510
Code:  Bad RIP value.
RIP  [<          (null)>]           (null)
 RSP <ffff8801db607e48>
CR2: 0000000000000000
---[ end trace c9846b6696d668ab ]---