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| author | Amir Goldstein <amir73il@gmail.com> | 2018-04-11 20:09:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-19 08:55:13 +0200 |
| commit | c4f45cf301e6fc024ef5eb3eca234c659d751cb8 (patch) | |
| tree | aad96c26702fb581abdab8c35f43d003d9576678 | |
| parent | 9def916c750d9f87527931b13e766f381a3a3811 (diff) | |
| download | linux-stable-c4f45cf301e6fc024ef5eb3eca234c659d751cb8.tar.gz linux-stable-c4f45cf301e6fc024ef5eb3eca234c659d751cb8.tar.bz2 linux-stable-c4f45cf301e6fc024ef5eb3eca234c659d751cb8.zip | |
ovl: set lower layer st_dev only if setting lower st_ino
commit 9f99e50d460ac7fd5f6c9b97aad0088c28c8656d upstream.
For broken hardlinks, we do not return lower st_ino, so we should
also not return lower pseudo st_dev.
Fixes: a0c5ad307ac0 ("ovl: relax same fs constraint for constant st_ino")
Cc: <stable@vger.kernel.org> #v4.15
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/overlayfs/inode.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 94d2f8a8b779..0dbbfedef54c 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -110,13 +110,10 @@ int ovl_getattr(const struct path *path, struct kstat *stat, * that the upper hardlink is not broken. */ if (is_dir || lowerstat.nlink == 1 || - ovl_test_flag(OVL_INDEX, d_inode(dentry))) + ovl_test_flag(OVL_INDEX, d_inode(dentry))) { stat->ino = lowerstat.ino; - - if (samefs) - WARN_ON_ONCE(stat->dev != lowerstat.dev); - else stat->dev = ovl_get_pseudo_dev(dentry); + } } if (samefs) { /* |