INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 23022 Comm: syz-executor318 Not tainted 5.6.0-rc3-next-20200225-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+0x197/0x210 lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:881 [inline] register_lock_class+0x179e/0x1850 kernel/locking/lockdep.c:1193 __lock_acquire+0xf4/0x6320 kernel/locking/lockdep.c:4072 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4720 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:159 __wake_up_common_lock+0xc8/0x150 kernel/sched/wait.c:122 __wake_up+0xe/0x10 kernel/sched/wait.c:142 uhid_dev_destroy+0x74/0x110 drivers/hid/uhid.c:563 uhid_char_release+0x54/0xc0 drivers/hid/uhid.c:642 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbcb/0x3030 kernel/exit.c:802 do_group_exit+0x135/0x360 kernel/exit.c:900 get_signal+0x47c/0x24f0 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:813 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:161 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446ed9 Code: e8 dc e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff94dd97cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000006ddc28 RCX: 0000000000446ed9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006ddc28 RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c R13: 00007fff9853c74f R14: 00007ff94dd989c0 R15: 0000000000000000 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 23022 Comm: syz-executor318 Not tainted 5.6.0-rc3-next-20200225-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__wake_up_common+0xdf/0x610 kernel/sched/wait.c:86 Code: 05 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 7d d0 0f 84 64 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 0d 05 00 00 49 8b 40 18 89 55 b0 31 db 49 bc 00 RSP: 0018:ffffc900072df898 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880997493c8 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff154c73a RDI: 0000000000000000 RBP: ffffc900072df8f0 R08: ffffffffffffffe8 R09: ffffc900072df940 R10: fffff52000e5bf0c R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000286 R14: 0000000000000000 R15: 0000000000000001 FS: 00007ff94dd98700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5d2798b1a0 CR3: 00000000a2813000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __wake_up_common_lock+0xea/0x150 kernel/sched/wait.c:123 __wake_up+0xe/0x10 kernel/sched/wait.c:142 uhid_dev_destroy+0x74/0x110 drivers/hid/uhid.c:563 uhid_char_release+0x54/0xc0 drivers/hid/uhid.c:642 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbcb/0x3030 kernel/exit.c:802 do_group_exit+0x135/0x360 kernel/exit.c:900 get_signal+0x47c/0x24f0 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:813 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:161 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446ed9 Code: e8 dc e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff94dd97cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000006ddc28 RCX: 0000000000446ed9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006ddc28 RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c R13: 00007fff9853c74f R14: 00007ff94dd989c0 R15: 0000000000000000 Modules linked in: ---[ end trace a0edf4c2b9ab3a41 ]--- RIP: 0010:__wake_up_common+0xdf/0x610 kernel/sched/wait.c:86 Code: 05 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 7d d0 0f 84 64 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 0d 05 00 00 49 8b 40 18 89 55 b0 31 db 49 bc 00 RSP: 0018:ffffc900072df898 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880997493c8 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff154c73a RDI: 0000000000000000 RBP: ffffc900072df8f0 R08: ffffffffffffffe8 R09: ffffc900072df940 R10: fffff52000e5bf0c R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000286 R14: 0000000000000000 R15: 0000000000000001 FS: 00007ff94dd98700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5d2798b1a0 CR3: 00000000a2813000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400