4.16-stable review patch. If anyone has any objections, please let me know.
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From: Amir Goldstein amir73il@gmail.com
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: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/overlayfs/inode.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
--- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -118,13 +118,10 @@ int ovl_getattr(const struct path *path, */ if (ovl_test_flag(OVL_INDEX, d_inode(dentry)) || (!ovl_verify_lower(dentry->d_sb) && - (is_dir || lowerstat.nlink == 1))) + (is_dir || lowerstat.nlink == 1))) { stat->ino = lowerstat.ino; - - if (samefs) - WARN_ON_ONCE(stat->dev != lowerstat.dev); - else stat->dev = ovl_get_pseudo_dev(dentry); + } } if (samefs) { /*