syzbot

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BUG: KASAN: slab-out-of-bounds in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
BUG: KASAN: slab-out-of-bounds in hidinput_hid_event+0x1111/0x15d3 drivers/hid/hid-input.c:1381
Read of size 8 at addr ffff8881cfe80988 by task swapper/0/0

CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc2-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+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
 check_memory_region_inline mm/kasan/generic.c:185 [inline]
 check_memory_region+0x152/0x1c0 mm/kasan/generic.c:192
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
 hidinput_hid_event+0x1111/0x15d3 drivers/hid/hid-input.c:1381
 hid_process_event+0x4a0/0x580 drivers/hid/hid-core.c:1506
 hid_input_field drivers/hid/hid-core.c:1550 [inline]
 hid_report_raw_event+0xabb/0xed0 drivers/hid/hid-core.c:1757
 hid_input_report+0x315/0x3f0 drivers/hid/hid-core.c:1824
 hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284
 __usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648
 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713
 dummy_timer+0x123d/0x2fdb drivers/usb/gadget/udc/dummy_hcd.c:1966
 call_timer_fn+0x179/0x650 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+0x5e3/0x1490 kernel/time/timer.c:1786
 __do_softirq+0x221/0x912 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+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:default_idle+0x28/0x2e0 arch/x86/kernel/process.c:700
Code: cc cc 41 56 41 55 65 44 8b 2d 6c 7c 86 7a 41 54 55 53 0f 1f 44 00 00 e8 76 08 c9 fb e9 07 00 00 00 0f 00 2d 7a 02 47 00 fb f4 <65> 44 8b 2d 48 7c 86 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffffff86e07da8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: ffffffff86e2c200 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffffffff86e2ca4c
RBP: fffffbfff0dc5840 R08: ffffffff86e2c200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x3c3/0x4e0 kernel/sched/idle.c:269
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361
 start_kernel+0x8b1/0x8eb init/main.c:785
 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:242

Allocated by task 12:
 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
 kmalloc include/linux/slab.h:556 [inline]
 kzalloc include/linux/slab.h:670 [inline]
 input_allocate_device+0x3e/0x260 drivers/input/input.c:1810
 hidinput_allocate drivers/hid/hid-input.c:1654 [inline]
 hidinput_connect+0x3cab/0xdb90 drivers/hid/hid-input.c:1899
 hid_connect+0x965/0xbb0 drivers/hid/hid-core.c:1923
 hid_hw_start drivers/hid/hid-core.c:2027 [inline]
 hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:2018
 ms_probe+0x159/0x4d0 drivers/hid/hid-microsoft.c:394
 hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2255
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0x1480/0x1c20 drivers/base/core.c:2487
 hid_add_device drivers/hid/hid-core.c:2411 [inline]
 hid_add_device+0x33c/0x9a0 drivers/hid/hid-core.c:2360
 usbhid_probe+0xa81/0xfa0 drivers/hid/usbhid/hid-core.c:1386
 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0x1480/0x1c20 drivers/base/core.c:2487
 usb_set_configuration+0xe67/0x1740 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
 really_probe+0x281/0x6d0 drivers/base/dd.c:548
 driver_probe_device+0x104/0x210 drivers/base/dd.c:721
 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
 __device_attach+0x217/0x360 drivers/base/dd.c:894
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
 device_add+0x1480/0x1c20 drivers/base/core.c:2487
 usb_new_device.cold+0x6a4/0xe79 drivers/usb/core/hub.c:2537
 hub_port_connect drivers/usb/core/hub.c:5184 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5324 [inline]
 port_event drivers/usb/core/hub.c:5470 [inline]
 hub_event+0x1e59/0x3860 drivers/usb/core/hub.c:5552
 process_one_work+0x92b/0x1530 kernel/workqueue.c:2264
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x318/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8881cfe80000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 392 bytes to the right of
 2048-byte region [ffff8881cfe80000, ffff8881cfe80800)
The buggy address belongs to the page:
page:ffffea00073fa000 refcount:1 mapcount:0 mapping:ffff8881da00c000 index:0x0 compound_mapcount: 0
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000
raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cfe80880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cfe80900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881cfe80980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                      ^
 ffff8881cfe80a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cfe80a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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