This is a note to let you know that I've just added the patch titled ovl: Do d_type check only if work dir creation was successful to the 4.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ovl-do-d_type-check-only-if-work-dir-creation-was-successful.patch and it can be found in the queue-4.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 21765194cecf2e4514ad75244df459f188140a0f Mon Sep 17 00:00:00 2001 From: Vivek Goyal <vgoyal@xxxxxxxxxx> Date: Fri, 20 May 2016 09:04:26 -0400 Subject: ovl: Do d_type check only if work dir creation was successful From: Vivek Goyal <vgoyal@xxxxxxxxxx> commit 21765194cecf2e4514ad75244df459f188140a0f upstream. d_type check requires successful creation of workdir as iterates through work dir and expects work dir to be present in it. If that's not the case, this check will always return d_type not supported even if underlying filesystem might be supporting it. So don't do this check if work dir creation failed in previous step. Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx> Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/overlayfs/super.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1064,16 +1064,19 @@ static int ovl_fill_super(struct super_b /* * Upper should support d_type, else whiteouts are visible. * Given workdir and upper are on same fs, we can do - * iterate_dir() on workdir. + * iterate_dir() on workdir. This check requires successful + * creation of workdir in previous step. */ - err = ovl_check_d_type_supported(&workpath); - if (err < 0) - goto out_put_workdir; + if (ufs->workdir) { + err = ovl_check_d_type_supported(&workpath); + if (err < 0) + goto out_put_workdir; - if (!err) { - pr_err("overlayfs: upper fs needs to support d_type.\n"); - err = -EINVAL; - goto out_put_workdir; + if (!err) { + pr_err("overlayfs: upper fs needs to support d_type.\n"); + err = -EINVAL; + goto out_put_workdir; + } } } Patches currently in stable-queue which might be from vgoyal@xxxxxxxxxx are queue-4.6/ovl-warn-instead-of-error-if-d_type-is-not-supported.patch queue-4.6/ovl-copy-up-underlying-inode-s-i_mode-to-overlay-inode.patch queue-4.6/ovl-do-d_type-check-only-if-work-dir-creation-was-successful.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html