From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E317C11CBA; Thu, 31 Aug 2023 15:03:11 +0000 (UTC) Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74795CC5; Thu, 31 Aug 2023 08:03:10 -0700 (PDT) Received: by mail-ej1-x631.google.com with SMTP id a640c23a62f3a-991c786369cso109404466b.1; Thu, 31 Aug 2023 08:03:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1693494189; x=1694098989; darn=vger.kernel.org; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:from:to:cc:subject :date:message-id:reply-to; bh=VJr3S4oVZbd7ZT/Wt+7mrgyluXxLgkA2mmGZaMzWAxQ=; b=cJjlNM5J2cApuvt65DqY7DI9RPE4K3833or49Kc1/p0wDw3Jh0/j4r/sA8VMKqeoFe yzLouxxeEDKnsBxRXImWoBHcxHepMk8C2Iemc6ehkhYvJHMzPeLzI6hNaTh8vTcEIuih Br2OkTfG92GMI6mwso2/royffukGfzLCCrAsCuANeHJDH+CLaOr6Cb3Y80KamD/Spm1d tEUkjconAkbCAdwW6YcCYkJniHEGI0ueHiIVUn4LGSOkr1rTwyXFcYV87WOx8z9zADAA jjXTTjcF5JPQJcmwHe92liB2esdqQoPzREvEqYYDOaqaDsFQPxbZ6uuVZ0sXYK+od7d5 QpXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693494189; x=1694098989; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=VJr3S4oVZbd7ZT/Wt+7mrgyluXxLgkA2mmGZaMzWAxQ=; b=EKdRUrrBhfqNnmMttohZ96+pzerhMAAx9il4Bl/YrSzXVgas0KLLQwsT+VRSs25AWR mfomEV2gVw8S/GGFpuxeU+fhrOFs6bGJQq0dfWHhtig8M4/0UfGDcvP1pakXK2sUi8Vt FKolWc6WDq6zMt5nnmmQfRPN4mlO2aO8CniniASC1NwN6GPdywau8MyBJLWdf5lS4wSF Jx3CE6GkBHzdfRVyYmPICrG9pysCL0y74QfM+mDilePsv/oRom2mh2gtEIeiKjSRSMbE m0+1GU5Im2YKl5wI4wZp+4JuufAYIrxcQdJuYgTpOxB/iwVTWzxdTIwbHhXPY2ZBjiuI mb5g== X-Gm-Message-State: AOJu0YyMQBaKm7DzKdmV970+scmujKDh5MuSd3cQyOPtnYr7zX+Xy7n0 UH3mYvXw85WjKgdq/p0m9s4= X-Google-Smtp-Source: AGHT+IEW+ktfjOUsEEI5CWESHXT9h4cOqIVOPWDVyT8ai1Es9Izu+9nja9zmyaHhiEK/bTn4jOXIFA== X-Received: by 2002:a17:907:77da:b0:9a1:f21e:cdfe with SMTP id kz26-20020a17090777da00b009a1f21ecdfemr3796205ejc.58.1693494186444; Thu, 31 Aug 2023 08:03:06 -0700 (PDT) Received: from [192.168.1.95] (host-176-36-0-241.b024.la.net.ua. [176.36.0.241]) by smtp.gmail.com with ESMTPSA id e19-20020a1709067e1300b009a198078c53sm834496ejr.214.2023.08.31.08.03.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Aug 2023 08:03:05 -0700 (PDT) Message-ID: <082a6db6838d3aee5ca39eabd35d4da0c9691a0d.camel@gmail.com> Subject: Re: [BUG bpf-next] bpf/net: Hitting gpf when running selftests From: Eduard Zingerman To: Jiri Olsa Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , netdev@vger.kernel.org, bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Hou Tao Date: Thu, 31 Aug 2023 18:03:04 +0300 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.44.4-0ubuntu1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net On Thu, 2023-08-31 at 13:52 +0300, Eduard Zingerman wrote: > On Wed, 2023-08-30 at 23:07 +0200, Jiri Olsa wrote: > > On Wed, Aug 30, 2023 at 08:58:11PM +0200, Jiri Olsa wrote: > > > hi, > > > I'm hitting crash below on bpf-next/master when running selftests, > > > full log and config attached > >=20 > > it seems to be 'test_progs -t sockmap_listen' triggering that >=20 > Hi, >=20 > I hit it as well, use the following command to reproduce: >=20 > for i in $(seq 1 100); do \ > ./test_progs -a 'sockmap_listen/sockmap VSOCK test_vsock_redir' \ > | grep Summary; \ > done >=20 For what its worth, bisect points to the following commit: 147f3efaa241 ("sched/fair: Implement an EEVDF-like scheduling policy") Which was merged into bpf-next 3 days ago as a part of: 3ca9a836ff53 ("Merge tag 'sched-core-2023-08-28' of git://git.kernel.org/pu= b/scm/linux/kernel/git/tip/tip") Scheduling changes uncovered some old race condition? [...]