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authorBryan Donlan <bdonlan@gmail.com>2009-02-22 21:20:25 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-02-22 21:20:25 -0500
commite6f009b0b45220c004672d41a58865e94946104d (patch)
tree99a00ca6486c896b90376238c22a90de3e31cc57 /drivers/parisc
parenta4912123b688e057084e6557cef8924f7ae5bbde (diff)
downloadop-kernel-dev-e6f009b0b45220c004672d41a58865e94946104d.zip
op-kernel-dev-e6f009b0b45220c004672d41a58865e94946104d.tar.gz
ext4: return -EIO not -ESTALE on directory traversal through deleted inode
ext4_iget() returns -ESTALE if invoked on a deleted inode, in order to report errors to NFS properly. However, in ext4_lookup(), this -ESTALE can be propagated to userspace if the filesystem is corrupted such that a directory entry references a deleted inode. This leads to a misleading error message - "Stale NFS file handle" - and confusion on the part of the admin. The bug can be easily reproduced by creating a new filesystem, making a link to an unused inode using debugfs, then mounting and attempting to ls -l said link. This patch thus changes ext4_lookup to return -EIO if it receives -ESTALE from ext4_iget(), as ext4 does for other filesystem metadata corruption; and also invokes the appropriate ext*_error functions when this case is detected. Signed-off-by: Bryan Donlan <bdonlan@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'drivers/parisc')
0 files changed, 0 insertions, 0 deletions
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