INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 4706 Comm: syz-executor.3 Not tainted 5.2.0-rc6+ #15 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+0xca/0x13e /lib/dump_stack.c:113 assign_lock_key /kernel/locking/lockdep.c:775 [inline] register_lock_class+0x11ae/0x1240 /kernel/locking/lockdep.c:1084 __lock_acquire+0x11d/0x5340 /kernel/locking/lockdep.c:3674 lock_acquire+0x100/0x2b0 /kernel/locking/lockdep.c:4303 __mutex_lock_common /kernel/locking/mutex.c:926 [inline] __mutex_lock+0xf9/0x12b0 /kernel/locking/mutex.c:1073 usbtouch_open+0x101/0x310 /drivers/input/touchscreen/usbtouchscreen.c:1537 input_open_device+0x170/0x280 /drivers/input/input.c:607 evdev_open_device /drivers/input/evdev.c:433 [inline] evdev_open+0x3fe/0x510 /drivers/input/evdev.c:518 chrdev_open+0x219/0x5c0 /fs/char_dev.c:413 do_dentry_open+0x497/0x1040 /fs/open.c:778 do_last /fs/namei.c:3416 [inline] path_openat+0x1430/0x3ff0 /fs/namei.c:3533 do_filp_open+0x1a1/0x280 /fs/namei.c:3563 do_sys_open+0x3c0/0x580 /fs/open.c:1070 do_syscall_64+0xb7/0x560 /arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413711 Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fa4d1e327a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413711 RDX: 0000000000000000 RSI: 0000000000000200 RDI: 00007fa4d1e32850 RBP: 000000000075bfc8 R08: 000000000000000f R09: 0000000000000000 R10: 00007fa4d1e339d0 R11: 0000000000000293 R12: 00007fa4d1e336d4 R13: 00000000004c8a3f R14: 00000000004df700 R15: 00000000ffffffff