From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 011.lax.mailroute.net (011.lax.mailroute.net [199.89.1.14]) (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 0BA2923EAB9; Sun, 7 Dec 2025 15:20:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.1.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765120856; cv=none; b=WlXN8vu32k34D3CLVMy3YBN3TrOPIKyEy4REcgeD3lf6IPtY3CDi8FIhG4F0G3IAU4KdwOIqj51dqhTBAFEIkv+aiUzo5ex1SUH6XyWWLy5pwzM2V/tebN5MbTXWtKkchlk85c+vn1mOAA8C4rcNYFCBIVWsjTbTYV0IJ1qth+g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765120856; c=relaxed/simple; bh=4sw29FNF+hDXvAnVpBSFpwowyDJGsGQ0TKMzDyV2VxQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=D9SWaEkWEemJUuci4esqQlgXvGxiGoTbe20pVBfEQbAxMlSHDNKwHGdPweOxY2i48v5rJwde61jyC81TCOAVwzvPXU7IEudu222z109b0Druob4udiSVPbFoD7eaUNA4M0pb+/fQogSgdsCYzB7+DI600texEPFi+WR3LJARqbY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=F08NmBhi; arc=none smtp.client-ip=199.89.1.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="F08NmBhi" Received: from localhost (localhost [127.0.0.1]) by 011.lax.mailroute.net (Postfix) with ESMTP id 4dPTK01KZ0z1XM31H; Sun, 7 Dec 2025 15:18:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:content-type:content-type:in-reply-to :from:from:content-language:references:subject:subject :user-agent:mime-version:date:date:message-id:received:received; s=mr01; t=1765120706; x=1767712707; bh=4sw29FNF+hDXvAnVpBSFpwow yDJGsGQ0TKMzDyV2VxQ=; b=F08NmBhi6FhcjTjsh7iau1T2jSqJoYseX++LZML1 eF9QgmBE8fEAqeqYqQb+SQaIpYS5VVbdB8Hkdma6M8I4+TR9Eg+jPS3DUSEwNXMQ Sx2SHT22ftvysaeUb8HGbQpyKZcL7pAEglwVzK4iUETGe8ApKCPZ73C5Hh026Mdk bfXK3XkdaVVLXArm4/XvIpiEyE5ka2lNnBtDMOV+i9ZGCrdu4rlAFB0Lzuojwpq+ BCCohZ7CD4ExBTzNsFEimQDj+Ln0sLVmWwoil9JHkv8TcnQOCuY+Yv/QwW9K8xNt nAzPSR6Fl5ncU9ECx1HsPFkuvoYjUofSuaIcZxEA92anRQ== X-Virus-Scanned: by MailRoute Received: from 011.lax.mailroute.net ([127.0.0.1]) by localhost (011.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id G6PJ7d-KBR5B; Sun, 7 Dec 2025 15:18:26 +0000 (UTC) Received: from [192.168.51.14] (c-73-231-117-72.hsd1.ca.comcast.net [73.231.117.72]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 011.lax.mailroute.net (Postfix) with ESMTPSA id 4dPTJt3GHkz1XM5kt; Sun, 7 Dec 2025 15:18:21 +0000 (UTC) Message-ID: <46cf2cb9-76f4-4d73-be3d-88fcbe7055f4@acm.org> Date: Sun, 7 Dec 2025 07:18:18 -0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next] potential deadlock in ufshcd? To: Alexey Klimov , linux-scsi@vger.kernel.org, mani@kernel.org, linux-arm-msm@vger.kernel.org Cc: alim.akhtar@samsung.com, avri.altman@wdc.com, linux-next@vger.kernel.org, linux-kernel@vger.kernel.org References: Content-Language: en-US From: Bart Van Assche In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/6/25 7:07 PM, Alexey Klimov wrote: > Is it a known problem? I can test potential changes to resolve this > or try to collect more debug data if needed. Please help with testing these two kernel patches: * "[PATCH] ufs: core: Fix a deadlock in the frequency scaling code" (https://lore.kernel.org/linux-scsi/20251204181548.1006696-1-bvanassche@acm.org/). * "[PATCH] ufs: core: Fix an error handler crash" (https://lore.kernel.org/linux-scsi/20251204170457.994851-1-bvanassche@acm.org/). Thanks, Bart.