RSP: 002b:00007ffc38b497f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007ffc38b49810 RCX: 000000000045a659 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000fcc RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001ffc914 R13: 00000000004c1d50 R14: 00000000004d5a58 R15: 0000000000000003 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 8724 Comm: syz-executor.0 Not tainted 5.4.0-rc7-next-20191115 #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:1190 __lock_acquire+0xf4/0x4a00 kernel/locking/lockdep.c:3837 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __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 io_cqring_ev_posted+0xaa/0x120 fs/io_uring.c:629 io_cqring_overflow_flush+0x6d4/0xa90 fs/io_uring.c:676 io_ring_ctx_wait_and_kill+0x27a/0x810 fs/io_uring.c:4291 io_uring_create fs/io_uring.c:4628 [inline] io_uring_setup+0x1264/0x1cd0 fs/io_uring.c:4654 __do_sys_io_uring_setup fs/io_uring.c:4667 [inline] __se_sys_io_uring_setup fs/io_uring.c:4664 [inline] __x64_sys_io_uring_setup+0x54/0x80 fs/io_uring.c:4664 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a659 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:00007ffc38b497f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007ffc38b49810 RCX: 000000000045a659 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000fcc RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001ffc914 R13: 00000000004c1d50 R14: 00000000004d5a58 R15: 0000000000000003 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8724 Comm: syz-executor.0 Not tainted 5.4.0-rc7-next-20191115 #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:ffff8880a607fb00 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880896b2920 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff1391616 RDI: 0000000000000000 RBP: ffff8880a607fb58 R08: ffffffffffffffe8 R09: ffff8880a607fba8 R10: ffffed1014c0ff59 R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000282 R14: 0000000000000000 R15: 0000000000000003 FS: 0000000001ffc940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000480 CR3: 000000009ab99000 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 io_cqring_ev_posted+0xaa/0x120 fs/io_uring.c:629 io_cqring_overflow_flush+0x6d4/0xa90 fs/io_uring.c:676 io_ring_ctx_wait_and_kill+0x27a/0x810 fs/io_uring.c:4291 io_uring_create fs/io_uring.c:4628 [inline] io_uring_setup+0x1264/0x1cd0 fs/io_uring.c:4654 __do_sys_io_uring_setup fs/io_uring.c:4667 [inline] __se_sys_io_uring_setup fs/io_uring.c:4664 [inline] __x64_sys_io_uring_setup+0x54/0x80 fs/io_uring.c:4664 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a659 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:00007ffc38b497f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007ffc38b49810 RCX: 000000000045a659 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000fcc RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001ffc914 R13: 00000000004c1d50 R14: 00000000004d5a58 R15: 0000000000000003 Modules linked in: ---[ end trace f5866fc8a39bc759 ]--- 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:ffff8880a607fb00 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff8880896b2920 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff1391616 RDI: 0000000000000000 RBP: ffff8880a607fb58 R08: ffffffffffffffe8 R09: ffff8880a607fba8 R10: ffffed1014c0ff59 R11: 0000000000000003 R12: 0000000000000001 R13: 0000000000000282 R14: 0000000000000000 R15: 0000000000000003 FS: 0000000001ffc940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000480 CR3: 000000009ab99000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400