------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(!test_bit(class_idx, lock_classes_in_use)) WARNING: CPU: 0 PID: 8635 at kernel/locking/lockdep.c:5196 __lock_acquire+0x165b/0x2100 kernel/locking/lockdep.c:5196 Modules linked in: CPU: 0 UID: 0 PID: 8635 Comm: syz.5.624 Not tainted 6.13.0-rc4-syzkaller-00069-g8379578b11d5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__lock_acquire+0x165b/0x2100 kernel/locking/lockdep.c:5196 Code: 0f b6 04 08 84 c0 0f 85 31 0a 00 00 83 3d 20 e4 9e 0e 00 75 19 90 48 c7 c7 80 97 0a 8c 48 c7 c6 60 c0 0a 8c e8 66 4c e5 ff 90 <0f> 0b 90 90 90 e9 be fd ff ff 90 0f 0b 90 e9 16 fd ff ff 90 e8 9c RSP: 0018:ffffc9000c74f830 EFLAGS: 00010046 RAX: b1510aa11a30ee00 RBX: 0000000028f5c2d8 RCX: ffff888073a5da00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888073a5e558 R08: ffffffff81601a82 R09: 1ffff110170c519a R10: dffffc0000000000 R11: ffffed10170c519b R12: ffff888073a5e4c4 R13: ffff888073a5da00 R14: 0000000000000000 R15: ffff888073a5e578 FS: 000055555ca30500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fc1eff8 CR3: 000000005af82000 CR4: 0000000000350ef0 Call Trace: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 _double_lock_balance kernel/sched/sched.h:2989 [inline] double_lock_balance kernel/sched/sched.h:3034 [inline] find_lock_lowest_rq+0x1e1/0x670 kernel/sched/rt.c:1914 push_rt_task+0x144/0x790 kernel/sched/rt.c:2048 push_rt_tasks kernel/sched/rt.c:2096 [inline] task_woken_rt+0x14c/0x220 kernel/sched/rt.c:2394 ttwu_do_activate+0x30c/0x760 kernel/sched/core.c:3732 ttwu_queue kernel/sched/core.c:3993 [inline] try_to_wake_up+0x89b/0x1470 kernel/sched/core.c:4321 signal_wake_up_state+0xb4/0x120 kernel/signal.c:733 signal_wake_up include/linux/sched/signal.h:445 [inline] zap_other_threads+0x2fd/0x3e0 kernel/signal.c:1351 do_group_exit+0x18a/0x2c0 kernel/exit.c:1082 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3e70f85d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffb63e74a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3e70f85d29 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fffb63e74fc R08: 00007fffb63e758f R09: 0000000000048792 R10: 0000000000001d0c R11: 0000000000000246 R12: 0000000000000032 R13: 0000000000048792 R14: 00007fffb63e7550 R15: 00007fffb63e7550