From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) (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 70B1317756 for ; Wed, 10 Jul 2024 03:16:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720581386; cv=none; b=uHhlMOstRDAF0in0utYXFpuSDJhJGGegosrKifGWkB/V5O3CueG+dEVE+HQDBUY8JmSOinN31NYYjpg9t2DwDVdqRSkS8osqLlcfBUiw0OClGYckaV1vCdxj3ZjfsVRQ4RIbHysRGdzLzZyHEcCva8VQ7d0cF+b6kL9ilvav6go= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720581386; c=relaxed/simple; bh=KH+zFSlz82FWmMATspapEt8JjHOn0ZPGE5MuO0ZOWfY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=RkC1rQuL5yQyEGfRLeDkQ/Sc3rmaiJBrS2cpzoiBLNL8Y4E8dgG1z2hO/1QzLGV0GBH51CG0Sp4qVIfnM05zLq53RYbPvCrfvmANbeaMhiwIdJkBVisLlymZrFEg2TVMA3qMajLclcQW3H9dbdx2GxWc4mmUQgyGvIwZ6PrlJbo= 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=iwSUMkic; arc=none smtp.client-ip=209.85.214.181 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="iwSUMkic" Received: by mail-pl1-f181.google.com with SMTP id d9443c01a7336-1fb4a332622so23058795ad.2 for ; Tue, 09 Jul 2024 20:16:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1720581385; x=1721186185; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nOn0nNGwyICF+4LqjztD1biSMwmWZXfSkdW3laYh9NM=; b=iwSUMkiczegTayfY20RhERE8ojNBznA2igoAVM0UMxbjRgAKDWu2XD8v6QZAd4HOcJ FeU93pmfNqj7RKCXQdBVIK9RYUDlqGHMRIeeo+IU+fCBtDgfNLAaG/sxw8ppBOwO4qOb PqfBX9hzXs31uTrydN683EN7hR/jcSSnHHq+iPKPl6xa4nDAGoN1T8sohBU6ApC98N0c A/5CQAr+NX0yP8Rg29YE8/JnQZOyjWTeBDpsL0y27H7yUwhBhTapu8xpQ0ObC7QA7QW7 ODJfeAa4OYGdv1QOnOayL0PCrHwRshxXTjuM2A18ZJUF2tWNmJ3SgedaEaHMMxiCjw2x tVxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720581385; x=1721186185; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nOn0nNGwyICF+4LqjztD1biSMwmWZXfSkdW3laYh9NM=; b=jQLFFcSqiiczDbfDiewM6IZ6UCQlV7iKrKLI8B2iJI4R9gfuCrh+D04E1GwtMJ7rA8 CZNPKqTmLmmNEU7sM+Uw4klayxTiHWFUH2TarzDMEiL3g5SKnyl0T/VA4WcimAmdgDIB juJInqX4bbREhLzVvERGMvr24JUHr3OqRU5DuwjK9cChBlRAD0TPH3qsdEogIfqQSjuE bF3wssZOvA/CTzMgdEea0lMiPrv0ADuZD9RE1S0in3LiF3454pfIluh0Ys9uedqDydob IhvroLAlVMEiIjwN38bXAtCVRFyph/z6Opvj+7Kc8etHI0Aq3ouCRy4lQ/BZkBwtCS4m eCNA== X-Gm-Message-State: AOJu0Yy4M/0BnaGuqGNVzoFfPFDk36DUjvQDGsqityWdb+faykKQVTpq FE2XQocIa3MUVBgPnoSbz6H3z1OskzAE7gw64ozaBvMd8OLhecVk X-Google-Smtp-Source: AGHT+IE6zhOZD5BRcy/yslpciQCPU64Yckd/Mwqrw39YPSMt88Biox5JzVU4VG9UT+VnsdIKtDW9VA== X-Received: by 2002:a17:903:1207:b0:1fb:38c0:172a with SMTP id d9443c01a7336-1fbb6d25258mr37824285ad.1.1720581384529; Tue, 09 Jul 2024 20:16:24 -0700 (PDT) Received: from kernelexploit-virtual-machine.localdomain ([121.185.186.233]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fbb6ab6e35sm22891905ad.131.2024.07.09.20.16.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jul 2024 20:16:24 -0700 (PDT) From: Jeongjun Park To: syzbot+621fd56ba002faba6392@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org Subject: Re: [syzbot] [net?] [s390?] possible deadlock in smc_release Date: Wed, 10 Jul 2024 12:16:20 +0900 Message-Id: <20240710031620.58099-1-aha310510@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <00000000000031c6c50610660f17@google.com> References: <00000000000031c6c50610660f17@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- net/smc/af_smc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index c5f98c6b2561..e7ec066b0d6a 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -294,6 +294,8 @@ static int __smc_release(struct smc_sock *smc) sk->sk_prot->unhash(sk); + barrier(); + if (sk->sk_state == SMC_CLOSED) { if (smc->clcsock) { release_sock(sk); --