From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B25536F307 for ; Thu, 12 Dec 2024 14:19:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734013166; cv=none; b=C5drALQo4dXhSpU+znwN/EntFqDQ14rGkyVt3VllKeIoj/ZXnChsjCeg9LYWs4Z4rLSxBN48fTcx9pDHLOlMVYmFkzEgkno4baONT5vBpKvu/vouGfqzgJUXGl2Tk0SY/KVRsDgJEQ/dywQmrUykfCo/UC9EC8H337rNDEMHvZk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734013166; c=relaxed/simple; bh=WSJ9JSxmnxkAT9eR3yk29iJOp1X6UYJm/HAbUJpLuG0=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=NV13R+zLFniwao87P58PrxyalG86SEifTY/ocpa7Uh4CnOgHyzN3BcK+hiwWJUAmB0hj4jYeUXyo22+8RLBSrM+7grwOqsSMDO+d+gSQAB2LaOzabQsZ6ulGmI5aKDi7LYyTTeOufbWqO4mn2NKR04Z20VXjgMZAnP1dloybPhI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KVHUxESz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KVHUxESz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1256AC4CECE; Thu, 12 Dec 2024 14:19:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734013166; bh=WSJ9JSxmnxkAT9eR3yk29iJOp1X6UYJm/HAbUJpLuG0=; h=Date:Cc:Subject:To:References:From:In-Reply-To:From; b=KVHUxESzPrmvoiJs8GZpykODIVfJk9g/P60GfD9qIAiHa/v0TT/qVg1fPqW3mhN89 fiyEEd9+cs93KnA1wIdmm7GT9dpolZQbS8QCloJFuWgKYCxLJ1vfi07+iWbELfedFA CG4QmCVVv0tvonh+RHvFcOGNUe7Bq7r+zwZmt7VxFBiXnl/XIrLKlV2489d4HhlDcR aVAxvVDQFfW6KXLRjA7AV/RG2ygZvnqdvU9rlME25gHPdxfI2KnsIWJuFL4GhJ0fUF VdB1+oDPJxIXSiWVrDVe0fGD1uzmjSucZAHe2PdkhY1OaVH2sqfYtP1izIGK5H8z3Z zQsXcQeogNXLw== Message-ID: <3bd0e32f-030c-493b-922b-5c4c4c164cf1@kernel.org> Date: Thu, 12 Dec 2024 22:19:27 +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 Cc: Chao Yu , Max Kellermann , LKML Subject: Re: [PATCH] erofs: fix PSI memstall accounting To: Gao Xiang , linux-erofs@lists.ozlabs.org References: <20241127085236.3538334-1-hsiangkao@linux.alibaba.com> Content-Language: en-US From: Chao Yu Autocrypt: addr=chao@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2024/11/27 16:52, Gao Xiang wrote: > Max Kellermann recently reported psi_group_cpu.tasks[NR_MEMSTALL] is > incorrect in 6.11.9 kernel. > > I think the root cause of the recent issue is that since the problematic > commit, bio can be NULL so psi_memstall_leave() could be missed in > z_erofs_submit_queue(). > > Reported-by: Max Kellermann > Closes: https://lore.kernel.org/r/CAKPOu+8tvSowiJADW2RuKyofL_CSkm_SuyZA7ME5vMLWmL6pqw@mail.gmail.com > Fixes: 9e2f9d34dd12 ("erofs: handle overlapped pclusters out of crafted images properly") > Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Thanks,