From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8AEBBA0C4B for ; Fri, 5 Nov 2021 15:27:47 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 82B3B41134; Fri, 5 Nov 2021 15:27:47 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by mails.dpdk.org (Postfix) with ESMTP id 2949141134 for ; Fri, 5 Nov 2021 15:27:46 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636122465; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=a13m1XDOKbwFv8TSHQ5iRhJmBpE3W6ODgS1oFoN/oNE=; b=h3qCZaSQ3DkIKRXnzw8g0SeC3X4pjGzYy2uYnpavMilazGuQJUk0QZ4ftR4Ijt8IGPKWz/ zWiJ+CpSYLnvo+vypntk45h8n6xK1EWCUumnPdflRZi8eRQPkQ+/+yfFkDjDikVGNmASjq +Bl3Wn8k4XCjrZZ2oXOsXES+uJM5ZbM= Received: from mail-lj1-f198.google.com (mail-lj1-f198.google.com [209.85.208.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-499-L-sZRzubObuubUhVoRMeJA-1; Fri, 05 Nov 2021 10:27:44 -0400 X-MC-Unique: L-sZRzubObuubUhVoRMeJA-1 Received: by mail-lj1-f198.google.com with SMTP id f9-20020a05651c160900b00217e6a3ec32so3128964ljq.1 for ; Fri, 05 Nov 2021 07:27:44 -0700 (PDT) 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=a13m1XDOKbwFv8TSHQ5iRhJmBpE3W6ODgS1oFoN/oNE=; b=fES5/gvOBBi8x8I/7HR96FZ8WcuuNi7MzR9CHnhoj6v8nAThFR2+hrIVw7ZAEcoecs 7NhCk3lQVlv15mi5sWAYtABKJeyauKZuCYqPo0JpaS8cpLM0RWMQC77lZJgMxRnTvKgL yJ8rFqz0VJ21/pjRes7wTLbvvRdxPbOk6u0I4hkV8+oZ/QDegDBsydcMLIFR9Gbvh1QR zh+Mmavst17XQCm9Ex0+HrZPYeXVbKFGAR1276EPiI3WLhh0f+3rOoc45WoXul8PRrPt ppMyRseBgy/fzi3lqop3tiinOybw/8+3T4WmCsasRqpge6uhI8nauCZlC+lRnA5Xrlp/ wsQA== X-Gm-Message-State: AOAM531gQgXmubSeN1O2EZbiArAyxu3SPA+0ZfrOX1B+Q/fA6nQD6LiJ dQqJFZYhU2dPz04NRUjUZKSsWX7W417q3h5ZL/LFgDIC3oOdcCOjyPb0szdflOD32MaaPPjjmRq BqqNt97C/i2uF0kN1ov437/E= X-Received: by 2002:ac2:5d68:: with SMTP id h8mr53180172lft.217.1636122463000; Fri, 05 Nov 2021 07:27:43 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwZPkW8nydra4UWrhOKhuMguxppFYEaaHlnxN/AhJmdMiM0uG7K/bgP1z4N7oijz4GSpjtE+nS5+0CATKXYaas= X-Received: by 2002:ac2:5d68:: with SMTP id h8mr53180153lft.217.1636122462793; Fri, 05 Nov 2021 07:27:42 -0700 (PDT) MIME-Version: 1.0 References: <20211029095310.30785-1-olivier.matz@6wind.com> In-Reply-To: <20211029095310.30785-1-olivier.matz@6wind.com> From: David Marchand Date: Fri, 5 Nov 2021 15:27:31 +0100 Message-ID: To: Olivier Matz Cc: dev , Anatoly Burakov , Maxime Coquelin , dpdk stable Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dmarchan@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Subject: Re: [dpdk-stable] [PATCH] eal/memory: fix unused SIGBUS handler X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" On Fri, Oct 29, 2021 at 11:53 AM Olivier Matz wrote: > > Since its introduction in 2018, the SIGBUS handler was never registered, > and all related functions were unused. > > A SIGBUS can be received by the application when accessing to hugepages > even if mmap() was successful, This happens especially when running > inside containers when there is not enough hugepages. In this case, we > need to recover. A similar scheme can be found in eal_memory.c. > > Fixes: 582bed1e1d1d ("mem: support mapping hugepages at runtime") > Cc: stable@dpdk.org > > Signed-off-by: Olivier Matz Reviewed-by: Maxime Coquelin Acked-by: David Marchand Applied, thanks. -- David Marchand