From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4FC5D4D0CCF for ; Wed, 16 Sep 2026 16:52:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789577571; cv=none; b=aQB93/qJGbrSLdlcaRPnzj2b/JAdxMZvyU9B66+JLrgxdvFmjb9CF2UFdQOvuDHMdHajAnmyUcHAXaRYOlDSnXkKFn3hQM+v84rknAj98E1OY9FcbaFovdWeJSoz9wezk4/lAM6kjLrdrmMrg0P8S+tgNsn8FLDUnpdLSWGr2tc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789577571; c=relaxed/simple; bh=H5w9LkxBjQhWf/l4u0OqgcrOpanvFktr0psXehJhRbw=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=gmcnkftG3Gah4wezQqR7bH0NtvsNhHakC3k+3JG09JViyKEJRd/l0H0eZryKB0sRG07TjGNc7IGqRFjenA1Ao0V2Ufw7i8BEpmlE9glLLR0G8bA2vqpGxieru3hJOm92fwZRbWkG9pufnntcaP2e+yZl1YBGaf3Zo+bZXzTQrBU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ire/5Cfh; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Ire/5Cfh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 751321F0089C; Wed, 16 Sep 2026 16:52:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789577564; bh=2I6vhnCeCBfaDp3WYMwVZAObSwobnXJOCV3UKFIGCOM=; h=Subject:To:Cc:From:Date; b=Ire/5CfhpYRj1QJqqm9/vWnIEY+nDucNjWigJOPKOazafDpib1XLj/Fw0fhTw5Uyn 0AtCKDPQ9JCb3CLvK7L5q35VKcPMq1gPZN/Df0CrCm7sv0ypYv0oLF+kr4NfiHxKcH tjYfaVY4ztQMNygp1MaHOEM/uJuAItD9TTcnI3Ic= Subject: FAILED: patch "[PATCH] smb: client: fix WSL reparse point uid/gid override" failed to apply to 6.6-stable tree To: pc@manguebit.org,bharathsm@microsoft.com,linkinjeon@kernel.org,ronniesahlberg@gmail.com,sprasad@microsoft.com,tom@talpey.com Cc: From: Date: Wed, 16 Sep 2026 17:46:53 +0100 Message-ID: <2026091653-repaying-rockslide-b109@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x cd2b2b57921d4caa7875e83198bb2aa71254328b # git commit -s git send-email --to '' --in-reply-to '2026091653-repaying-rockslide-b109@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From cd2b2b57921d4caa7875e83198bb2aa71254328b Mon Sep 17 00:00:00 2001 From: Paulo Alcantara Date: Sun, 6 Sep 2026 14:40:23 -0300 Subject: [PATCH] smb: client: fix WSL reparse point uid/gid override wsl_to_fattr() unconditionally overwrites cf_uid/cf_gid with values from WSL extended attributes ($LXUID/$LXGID), ignoring the forceuid and forcegid mount options. Fix this by initializing cf_uid/cf_gid to the mount defaults and gating the $LXUID/$LXGID EA parsing on forceuid/forcegid. Closes: https://sashiko.dev/#/patchset/20260906190803.667489-1-pc%40manguebit.org Reviewed-by: Namjae Jeon Signed-off-by: Paulo Alcantara Cc: Ronnie Sahlberg Cc: Shyam Prasad N Cc: Tom Talpey Cc: Bharath SM Cc: stable@vger.kernel.org diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c index 5cc5b0410d48..178da801e775 100644 --- a/fs/smb/client/reparse.c +++ b/fs/smb/client/reparse.c @@ -1137,10 +1137,14 @@ static bool wsl_to_fattr(struct cifs_open_info_data *data, struct cifs_sb_info *cifs_sb, u32 tag, struct cifs_fattr *fattr) { + unsigned int sbflags = cifs_sb_flags(cifs_sb); struct smb2_file_full_ea_info *ea; bool have_xattr_dev = false; u32 next = 0; + fattr->cf_uid = cifs_sb->ctx->linux_uid; + fattr->cf_gid = cifs_sb->ctx->linux_gid; + switch (tag) { case IO_REPARSE_TAG_LX_SYMLINK: fattr->cf_mode |= S_IFLNK; @@ -1177,11 +1181,13 @@ static bool wsl_to_fattr(struct cifs_open_info_data *data, nlen = ea->ea_name_length; v = (void *)((u8 *)ea->ea_data + ea->ea_name_length + 1); - if (!strncmp(name, SMB2_WSL_XATTR_UID, nlen)) - fattr->cf_uid = wsl_make_kuid(cifs_sb, v); - else if (!strncmp(name, SMB2_WSL_XATTR_GID, nlen)) - fattr->cf_gid = wsl_make_kgid(cifs_sb, v); - else if (!strncmp(name, SMB2_WSL_XATTR_MODE, nlen)) { + if (!strncmp(name, SMB2_WSL_XATTR_UID, nlen)) { + if (!(sbflags & CIFS_MOUNT_OVERR_UID)) + fattr->cf_uid = wsl_make_kuid(cifs_sb, v); + } else if (!strncmp(name, SMB2_WSL_XATTR_GID, nlen)) { + if (!(sbflags & CIFS_MOUNT_OVERR_GID)) + fattr->cf_gid = wsl_make_kgid(cifs_sb, v); + } else if (!strncmp(name, SMB2_WSL_XATTR_MODE, nlen)) { /* File type in reparse point tag and in xattr mode must match. */ if (S_DT(fattr->cf_mode) != S_DT(le32_to_cpu(*(__le32 *)v))) return false;