From: Christian Brauner Date: Mon, 17 Nov 2025 09:33:54 +0000 (+0100) Subject: ovl: port ovl_maybe_lookup_lowerdata() to cred guard X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cb3c8cbaed041b8cf229f48b9d7503eca7969f97;p=thirdparty%2Fkernel%2Flinux.git ovl: port ovl_maybe_lookup_lowerdata() to cred guard Use the scoped ovl cred guard. Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-23-b31603935724@kernel.org Reviewed-by: Amir Goldstein Signed-off-by: Christian Brauner --- diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index dbacf02423cbf..49874525cf52b 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -996,7 +996,6 @@ static int ovl_maybe_lookup_lowerdata(struct dentry *dentry) struct inode *inode = d_inode(dentry); const char *redirect = ovl_lowerdata_redirect(inode); struct ovl_path datapath = {}; - const struct cred *old_cred; int err; if (!redirect || ovl_dentry_lowerdata(dentry)) @@ -1014,9 +1013,8 @@ static int ovl_maybe_lookup_lowerdata(struct dentry *dentry) if (ovl_dentry_lowerdata(dentry)) goto out; - old_cred = ovl_override_creds(dentry->d_sb); - err = ovl_lookup_data_layers(dentry, redirect, &datapath); - ovl_revert_creds(old_cred); + with_ovl_creds(dentry->d_sb) + err = ovl_lookup_data_layers(dentry, redirect, &datapath); if (err) goto out_err;