From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from zeniv.linux.org.uk (zeniv.linux.org.uk [62.89.141.173]) (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 64DEF2C375A for ; Wed, 13 Aug 2025 07:32:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.89.141.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755070349; cv=none; b=rzYUg1ig/pdUmT7pR5eqIocBNy1B/2tq9G0dhR5+rep7BJZRnP3MIBzMGE3WTZvtksnkhpA3LdDcWkz037WaMTPVIxjIt9/YPKCDgam6t+9t1gUMKpAydr7V3TYK0EoLp/zm/KYvnLLzbk/KIINun+N8X/8/aIaLr0Tu1ExNeYs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755070349; c=relaxed/simple; bh=nDtDLt2/1s674ZlRUCKDm0dwr1fqoH2QpulB/eRyJOI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Uq4R7GfPWs47fC7CQdzj2e09G/V7DPluddTm+wALy9TPN7KimYenTdGsS8TfeSU92Y+cJ7tGZ24nEXbgsqV9KcuRmxD0XOxO1Ray/O5C1dcHG6obEDn1qgN4IyrvTOp52S+4kLkMan6cfTf37etbVs8qvp88fmZrPMyH9BQmChU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk; spf=none smtp.mailfrom=ftp.linux.org.uk; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b=UpwN8WfK; arc=none smtp.client-ip=62.89.141.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zeniv.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=ftp.linux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linux.org.uk header.i=@linux.org.uk header.b="UpwN8WfK" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=linux.org.uk; s=zeniv-20220401; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=LCR+6RxTmw+qQPUwCnKBZPirwu8L9n8+wKvlfcihAUY=; b=UpwN8WfK/WSmGDpTchnjXcuFLI 4IjZstFgCz2AnnYI5z/k1r/lV8FOZq1D0WWQngoRkcbtlT2EEsOVhgYXXxAiAIe5eDdyPpExxu3q2 xx2+0UM9oCIPxThTU2YNtFB9XWOQ90xKl/Yqaf0vm/UmBXjzB4XgX2PBShwb2T0vR4g51uy/5POiG +BDBUFSn3VlcQ2rIB/sgCmKtBQThNWS6NDrUwJAjMWbgegOUuafeSvZ5c4UjzXf/3a+wY5PKgkWE7 aMD2+oDBro3NaPWZM5ivNQk1A7yxwasjA4GdTIdlUN8hy+X/qcd8Pc6lRBhVN6gOVQVqSNxohOZ2Z Ir9XoJfg==; Received: from viro by zeniv.linux.org.uk with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1um5yC-000000076UW-0Ypc; Wed, 13 Aug 2025 07:32:24 +0000 Date: Wed, 13 Aug 2025 08:32:24 +0100 From: Al Viro To: "Lai, Yi" Cc: linux-fsdevel@vger.kernel.org, brauner@kernel.org, yi1.lai@intel.com, ebiederm@xmission.com, jack@suse.cz, torvalds@linux-foundation.org Subject: Re: [PATCH v3 44/48] copy_tree(): don't link the mounts via mnt_list Message-ID: <20250813073224.GI222315@ZenIV> References: <20250630025148.GA1383774@ZenIV> <20250630025255.1387419-1-viro@zeniv.linux.org.uk> <20250630025255.1387419-44-viro@zeniv.linux.org.uk> <20250813071303.GH222315@ZenIV> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250813071303.GH222315@ZenIV> Sender: Al Viro On Wed, Aug 13, 2025 at 08:13:03AM +0100, Al Viro wrote: > On Wed, Aug 13, 2025 at 02:45:25PM +0800, Lai, Yi wrote: > > Syzkaller repro code: > > https://github.com/laifryiee/syzkaller_logs/tree/main/250813_093835_attach_recursive_mnt/repro.c > > 404: The main branch of syzkaller_logs does not contain the path 250813_093835_attach_recursive_mnt/repro.c. https://github.com/laifryiee/syzkaller_logs/blob/main/250813_093835_attach_recursive_mnt/repro.c does get it... Anyway, I'm about to fall down right now (half past 3am here), will take a look once I get some sleep...