Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3B46C433F5 for ; Tue, 4 Jan 2022 18:21:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236306AbiADSVS (ORCPT ); Tue, 4 Jan 2022 13:21:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236248AbiADSVF (ORCPT ); Tue, 4 Jan 2022 13:21:05 -0500 Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 200A9C06179C for ; Tue, 4 Jan 2022 10:21:05 -0800 (PST) Received: by mail-lj1-x22d.google.com with SMTP id i11so49548599ljm.13 for ; Tue, 04 Jan 2022 10:21:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=w+EWql6pvLIn2T8wbRx9hDhh1qw1Cb0Ehxzhh770d7Q=; b=DvZPEcA3qvISGQ69XubnYTyoOEhrVMfSNbTzzX/n9vh9ihABNUDpLirG8uHkL7hqz1 sz1ZLNEGeLEfdNnDkYbpCf0l7JfTq/W4afQL3AT9o7WGXBOpccLWUgjFC2rC20AVlgoj ZYzMoYRNQc3k4XihlOh3hZ9hP0yjKLa0FgoWYHz1lOI6hIp1OVn4/joEjqbDWGymE1Iz P64l0s98jRAYyMtEaFx1SdVFqMyXD+2lAFflobXo95LLGvx638KyiRm9qv5awFMSv5Ro otxcGAwud5op3XQSJUjZvsgtOfUv1GGo/SQs/orfpPDY/YP4xyAxO/lqaD65GZJm/Hf4 SIcg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=w+EWql6pvLIn2T8wbRx9hDhh1qw1Cb0Ehxzhh770d7Q=; b=MGzlu5Xtwz9242SpmGK/hF8WAfV8Fn72hrnRDSE43oMMG2xf3bJ3FD9LnGuL8y5RgH QHp0tThfnOwK1sH/pMg2WB7lK9UST2g6AuH67ELmeFSaKmidgTWmVg3fJZQBr+5p2NYr 4ni2NBpwIPyPu4P0vVZviX56APuxhB6nbhcCDdv2xb07hW/1d22LFp066bmZ+PhbBWij XMfwS4HoNhx5U6aBh9FGFR7GG0uzfpTKjMuM9N7+/R2k0GGndE0yQRshCs1d7zrs+87X 5LFyiDjmzsLyP7rTNMb2yA220QwiCIgRJMSCHhax1wHhu/tzVYfLRiAbe7VWtUTNK97s PfSw== X-Gm-Message-State: AOAM530bcnnHSBsrF7LiHyluV/C8kf3VrywSo3T5ogXYqnpDCecOfJBK NjJ36PrUgUVvvvLlgyMkZPdgY2W7K4oYt4DpxNB/TQ== X-Google-Smtp-Source: ABdhPJzZ5TkVNdJCHAm6KtH3e5wu5oegS6QU1R8TROvocFjxhc0rECxH61wepebnKuwiWxfG71HRKOm/4/yFHRF/6Ec= X-Received: by 2002:a05:651c:1789:: with SMTP id bn9mr6656332ljb.475.1641320463159; Tue, 04 Jan 2022 10:21:03 -0800 (PST) MIME-Version: 1.0 References: <63840bf3-2199-3240-bdfa-abb55518b5f9@colorfullife.com> <20211223031207.556189-1-chi.minghao@zte.com.cn> In-Reply-To: <20211223031207.556189-1-chi.minghao@zte.com.cn> From: Shakeel Butt Date: Tue, 4 Jan 2022 10:20:51 -0800 Message-ID: Subject: Re: [PATCH v2] ipc/sem: do not sleep with a spin lock held To: cgel.zte@gmail.com Cc: Manfred Spraul , stable , Andrew Morton , Arnd Bergmann , chi.minghao@zte.com.cn, Davidlohr Bueso , LKML , Randy Dunlap , unixbhaskar@gmail.com, Vasily Averin , zealci@zte.com.cn Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 22, 2021 at 7:12 PM wrote: > > From: Minghao Chi > > We can't call kvfree() with a spin lock held, so defer it. > Fixes: fc37a3b8b438 ("[PATCH] ipc sem: use kvmalloc for sem_undo > allocation") > > Reported-by: Zeal Robot > Signed-off-by: Minghao Chi Reviewed-by: Shakeel Butt