=============================
[ BUG: Invalid wait context ]
6.14.0-rc4-syzkaller #0 Not tainted
-----------------------------
rcu_exp_gp_kthr/19 is trying to lock:
ffff8880b873e958 (&type->s_umount_key#72){.+.+}-{4:4}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
other info that might help us debug this:
context-{5:5}
3 locks held by rcu_exp_gp_kthr/19:
 #0: ffffffff8eb3e4c8 (rcu_state.exp_wake_mutex){+.+.}-{4:4}, at: rcu_exp_wait_wake kernel/rcu/tree_exp.h:690 [inline]
 #0: ffffffff8eb3e4c8 (rcu_state.exp_wake_mutex){+.+.}-{4:4}, at: rcu_exp_sel_wait_wake+0x1829/0x1dc0 kernel/rcu/tree_exp.h:719
 #1: ffffffff8eb3dff0 (&rnp->exp_wq[1]){....}-{3:3}, at: __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105
 #2: ffff888140adc628 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
 #2: ffff888140adc628 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xc2/0x1470 kernel/sched/core.c:4214
stack backtrace:
CPU: 0 UID: 0 PID: 19 Comm: rcu_exp_gp_kthr Not tainted 6.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
 check_wait_context kernel/locking/lockdep.c:4900 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 rq_lock kernel/sched/sched.h:1852 [inline]
 ttwu_queue kernel/sched/core.c:4000 [inline]
 try_to_wake_up+0x7e2/0x1470 kernel/sched/core.c:4330
 autoremove_wake_function+0x16/0x110 kernel/sched/wait.c:384
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock+0x132/0x1e0 kernel/sched/wait.c:106
 rcu_exp_wait_wake kernel/rcu/tree_exp.h:703 [inline]
 rcu_exp_sel_wait_wake+0x18ba/0x1dc0 kernel/rcu/tree_exp.h:719
 kthread_worker_fn+0x4f9/0xb70 kernel/kthread.c:1010
 kthread+0x7ab/0x920 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>