From nobody Thu Mar 31 18:21:55 2022 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 1CD2C1A385AD; Thu, 31 Mar 2022 18:21:56 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KTs8M74LDz3JsQ; Thu, 31 Mar 2022 18:21:55 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1648750916; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=XEwz6U7Li/TzE56oyyzof6zI1e76vz0BMOPrRrL5TvY=; b=Q2EGXQXoQzunnwRjUdYiWHFMRKNnVZCXrxYkLdrdWXWbYkEszI82ym+srYvAcE9lsGJjfJ qQQLxSGDdEbw8+0g4nIsYArW1o6C1I8aKGS50/C0BYIas19hN5pzUcvcUeNxGDLLkld9aI 7UYtz/0ji5vfjHBeMnu9P3i11SnaiN0S5PSKSIVWqLMqrRITsrq8p/KIdRPkfSmb3goeL8 NI48zwpPA4VZrQYm6vVQsB7vSWdY34qTp0DJ9wqnzZEx7m9zYMoWu5sk5ptrAJcWwIpa/q uxadbizbYVSYDZMgst7GlrtN1QhsCXZUgSAr8rQlLAY7zjsJptdTrgEGsQBALA== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D27D72C16E; Thu, 31 Mar 2022 18:21:55 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 22VILtDr083637; Thu, 31 Mar 2022 18:21:55 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 22VILtfD083636; Thu, 31 Mar 2022 18:21:55 GMT (envelope-from git) Date: Thu, 31 Mar 2022 18:21:55 GMT Message-Id: <202203311821.22VILtfD083636@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Dmitry Chagin Subject: git: d6ccce0aa267 - main - linux(4): readlink should fail if bufzis <= 0. List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: dchagin X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: d6ccce0aa267db8ee57736e944520e2967896340 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1648750916; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=XEwz6U7Li/TzE56oyyzof6zI1e76vz0BMOPrRrL5TvY=; b=FuTSCGwqY4rQIDDp5r/RpA+bY4AqlSaqGJUGHcrx0+owQhE/Y2s47g08fskJjWj1H4VxoZ eCrAXkAV8u1R/1xraLi8Rd7ASXv8ZDwiSav9Vyg4bPNJ6rfaGtR9Pu5LIIIPyrR2KepfLV UZHp/A3D23/CashuBOIqQydxnvUtmDq0lDu3uYOSSLaOH6gFvyQk+C23m1rGfu8ys9PZAL 3PwQ3sfAT0z7RPfxdZWz7llgtHKsbD/7KYllScBecerfUKzgSWTZMdETZT7gUUhslStPrb qJxHK+FC2r0nHR3eoo8WICT95t62p45cFZvMfXaoEaE5e5Q/Nn8nngZpnzQFCg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1648750916; a=rsa-sha256; cv=none; b=rYzKZh/r79vrTEVihL4O7qeAjA4lnMccY8qEtQ+X8XwgNKGJ2w9pqEbirCCd+pYcvE1BKu PXHeiSDYXTY+mmgHdRZuQO3M3XRIP4F6K3HEbNGw2DqfSGdoFcVWsEKwP9cyKttQ3vy30c lpdB2X4rH7BEgoSNypM/oqrFo5krWow8knJuoFadu//tyXzTz+cDKIwSrx3vk446e21crl yQiXFcpe0CvrJJxMW/G445QVRfYuxGogvlqgMeaAbUUyFPnkU9B4TvvJvUO/4hpqAk2iUS OzzfQhOSOdpxD1ahfgo4SB9IXiBP7kAwfst/WOdnHzpD0wwU37eF6ORUquDnFA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by dchagin: URL: https://cgit.FreeBSD.org/src/commit/?id=d6ccce0aa267db8ee57736e944520e2967896340 commit d6ccce0aa267db8ee57736e944520e2967896340 Author: Dmitry Chagin AuthorDate: 2022-03-31 18:21:41 +0000 Commit: Dmitry Chagin CommitDate: 2022-03-31 18:21:41 +0000 linux(4): readlink should fail if bufzis <= 0. MFC after: 2 weeks --- sys/compat/linux/linux_file.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c index 6a1402c09456..8926e760fc39 100644 --- a/sys/compat/linux/linux_file.c +++ b/sys/compat/linux/linux_file.c @@ -1042,6 +1042,9 @@ linux_readlink(struct thread *td, struct linux_readlink_args *args) char *name; int error; + if (args->count <= 0) + return (EINVAL); + if (!LUSECONVPATH(td)) { return (kern_readlinkat(td, AT_FDCWD, args->name, UIO_USERSPACE, args->buf, UIO_USERSPACE, args->count)); @@ -1060,6 +1063,9 @@ linux_readlinkat(struct thread *td, struct linux_readlinkat_args *args) char *name; int error, dfd; + if (args->bufsiz <= 0) + return (EINVAL); + dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; if (!LUSECONVPATH(td)) { return (kern_readlinkat(td, dfd, args->path, UIO_USERSPACE,