On Thu, 28 Aug 2025 17:09:35 +0800 Menglong Dong <[email protected]> wrote:
> > [ 354.955971][ T4652] dump_stack_lvl+0x7c/0x90 > > [ 354.955978][ T4652] lockdep_rcu_suspicious+0x14f/0x1c0 > > [ 354.955987][ T4652] __rhashtable_lookup+0x1e0/0x260 > > rcu_read_lock() is not needed in fprobe_entry, but > rcu_dereference_check() is used in rhltable_lookup(), which > causes this warning. Why is rcu_read_lock() not needed in fprobe_entry()? -- Steve > > Adding rcu_read_lock() here is able to suppress this warning. > Maybe we need only rcu_lock_acquire(&rcu_lock_map) here, > but it's not a common usage. What do you think, Masami?
