From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f49.google.com (mail-oa1-f49.google.com [209.85.160.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DDD7E523D for ; Wed, 21 Feb 2024 12:51:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708519907; cv=none; b=ZTa0vsEza65bqnarvMlC9AmKHz32sHh3F7nf6XR8OgNcf1Zm1qi7nd+k1y8GovKyM4LPI0+BLkDVi4t84U2nQwScrTsIDQr8BE7q4z3wUo+2E9vNcdTkM+p2FeDnFTsunSZwOcazxJyR5eTCOSnGu+O2qaGv3EWuRVJRysB1O0c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708519907; c=relaxed/simple; bh=7SxIRrDMrbOx0Wa3HujKQo9aJFEi5x+mabSWiYpI/M8=; h=From:Content-Type:Mime-Version:Subject:Message-Id:Date:Cc:To; b=AFDUb1rLO9ZuioDunNWGz9/eTn+bL1y/NTs1tD3Z8FwzJIZLfcJpQZ5sCdS8dZDtXmJYTzxXj18McTavO/f7cAtfy9yexjkh4IhONo2uSx7wt7uyHBB13/baVhWbIgXvFl/V7LpBu5PpUCrckU/xugVqFvRIXi9PKWf2xfgrJaw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=CGYe0QT9; arc=none smtp.client-ip=209.85.160.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CGYe0QT9" Received: by mail-oa1-f49.google.com with SMTP id 586e51a60fabf-20503dc09adso4128704fac.2 for ; Wed, 21 Feb 2024 04:51:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1708519905; x=1709124705; darn=vger.kernel.org; h=to:cc:date:message-id:subject:mime-version :content-transfer-encoding:from:from:to:cc:subject:date:message-id :reply-to; bh=8fSbhPuMI/xlqHdCkwYZiOSYqe+jWhtt+6Sq+QccYH8=; b=CGYe0QT9pvBtALJ606pgCnpKfBAXFPRUbdC2NZP9eDEZ/ZA5i85kSM5RDUstZg60+M AGpMJJG9GmzFTWZq6FR28bdPmvF9JB+2Yo2sfufuNhmknpIMG81wsmC2Ykzo59nLRsPZ qfGVDDaBgdGUKdJUU/H+sbw9IIQBEBeSoh+RIoOIJJ6tVWPoJvR/SCW0paKKKLHPZ7k0 SgtYqXJNtcmj/ug+2uGcm+aR1NBGwY0QAloNz32Wlz83t1XfrxTk8iSVj+6dUNd/iS/B Q0Nrk6XDznddGsnHEHE8NxGeHaCXvnt9vFoI06c4bU/yhDwMhot8uG4Scs5Koiqbn1Z9 WI5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708519905; x=1709124705; h=to:cc:date:message-id:subject:mime-version :content-transfer-encoding:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8fSbhPuMI/xlqHdCkwYZiOSYqe+jWhtt+6Sq+QccYH8=; b=VNPFcBSpTn2rxzVxzqGV+eV4fX4/Z9QklZgQhxDARJ4aiYGNf25Rz9lYtwZ80sEFfx bFVVU8JxnqiLWgxHKV2/8w3JOYO22UNHa54x+4FP93wwWUgT5HdYJ5tf/Ti5vJMQbooH Ze5xtP9GlOkHw2y4WpztawBeBqCBSx8m9qVOztXEl1GAInwmGh85t7WCS/fj53/oF9ok 2G/uloTRnzlE9J1vOg602P3Vlf+QACw8En9oKfMt8GOYqAMMrz8nG73qnZV8GJy6aP4a cvXGRofMi1jqpxvmNQzKrLsQxiq3VcGMc66+JwrVov8xUBZmOMd2UUz/lIXpOJ4vGeSn 6jeg== X-Forwarded-Encrypted: i=1; AJvYcCWmdMWtz8vqzQQ0RUE5s2NwE/Mv7qlXuCNZ81CTX186sEYcrCUbLWLXDYpVNt5vNYGmwTo/+nKLRc2nHXstjRs7ZrnKKvvnmUNZkQ== X-Gm-Message-State: AOJu0YxdLpJnabK3yHiRA0ZugtJLGcswU/1/HuefWUEd1jrpcUXjBB7O 8JuM5Bp19hwf0YC/M7seq7VMqm8VrMemg4UNssQSiBsgBxuSflGy X-Google-Smtp-Source: AGHT+IEdJNP33/ofg9espFLeEgubsB6zR5C4k4O/1N+C/Dw+QqVa3DAsE7+xcm1/KVMWr5oXslBW6A== X-Received: by 2002:a05:6870:8192:b0:21e:6672:a46f with SMTP id k18-20020a056870819200b0021e6672a46fmr16976648oae.29.1708519904879; Wed, 21 Feb 2024 04:51:44 -0800 (PST) Received: from smtpclient.apple ([2601:6c1:500:2c60:480c:13c7:27d2:6b89]) by smtp.gmail.com with ESMTPSA id sf12-20020a056871230c00b0021e924c017esm2052631oab.58.2024.02.21.04.51.43 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Feb 2024 04:51:44 -0800 (PST) From: Kevan Rehm Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.300.61.1.2\)) Subject: Re: Segfault in mlx5 driver on infiniband after application fork Message-Id: Date: Wed, 21 Feb 2024 07:51:31 -0500 Cc: Mark Zhang , Leon Romanovsky , "linux-rdma@vger.kernel.org" , Yishai Hadas , Kevan Rehm , "chien.tin.tung@intel.com" , Kevan Rehm To: Jason Gunthorpe X-Mailer: Apple Mail (2.3774.300.61.1.2) I posted PR #1431 for this. I tested with IBV_FORK_SAFE and = RDMA_FORK_SAFE set and unset. Also with UCX_IB_FORK_INIT unset, set to = no, and set to yes. All combos work correctly without segfault.=