linux-kernel - Re: [BUG] Lockdep splat during kvfree_call_rcu and stack_depot

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Message-ID: <20201026151514.GA3942@pc636>
Date:   Mon, 26 Oct 2020 16:15:14 +0100
From:   Uladzislau Rezki <urezki@...il.com>
To:     Richard Palethorpe <rpalethorpe@...e.de>
Cc:     Joel Fernandes <joel@...lfernandes.org>,
        Alexander Potapenko <glider@...gle.com>, rcu@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Uladzislau Rezki <urezki@...il.com>
Subject: Re: [BUG] Lockdep splat during kvfree_call_rcu and stack_depot_save

Hello.

> Hello,
> 
> The kmem memcg selftest causes the following lockdep splat on 5.9+
> 
> [   67.534319] =============================
> [   67.534410] [ BUG: Invalid wait context ]
> [   67.534522] 5.9.1-22-default #125 Not tainted
> [   67.534647] -----------------------------
>
Working on it. We are aware about it.

Thanks!

--
Vlad Rezki