Re: INFO: suspicious rcu_dereference_check() usage - kernel/pid.c:419 invoked rcu_dereference_check() without protection!

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(another try with the proper email address)

On 11/09, Paul E. McKenney wrote:

Agreed, I think tasklock should be killed.


But wait. Whatever we do, isn't this code racy? I do not see why, say,
sys_ioprio_set(IOPRIO_WHO_PROCESS) can't install ->io_context after
this task has already passed exit_io_context().

Jens, am I missed something?

Oleg.

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Re: INFO: suspicious rcu_dereference_check() usage - kerne ..., Oleg Nesterov, (Wed Nov 10, 9:02 am)