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| author | Ryusuke Konishi <konishi.ryusuke@gmail.com> | 2022-09-29 21:33:30 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-15 07:59:01 +0200 |
| commit | c0c3d3d3ea41cb5228ee90568bb953f9a56c3227 (patch) | |
| tree | 08dcc9fff1ce6af804a926dbbe9d71416ccd4eca | |
| parent | 44b1ee304bac03f1b879be5afe920e3a844e40fc (diff) | |
| download | linux-stable-c0c3d3d3ea41cb5228ee90568bb953f9a56c3227.tar.gz linux-stable-c0c3d3d3ea41cb5228ee90568bb953f9a56c3227.tar.bz2 linux-stable-c0c3d3d3ea41cb5228ee90568bb953f9a56c3227.zip | |
nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
commit 723ac751208f6d6540191689cfbf6c77135a7a1b upstream.
If creation or finalization of a checkpoint fails due to anomalies in the
checkpoint metadata on disk, a kernel warning is generated.
This patch replaces the WARN_ONs by nilfs_error, so that a kernel, booted
with panic_on_warn, does not panic. A nilfs_error is appropriate here to
handle the abnormal filesystem condition.
This also replaces the detected error codes with an I/O error so that
neither of the internal error codes is returned to callers.
Link: https://lkml.kernel.org/r/20220929123330.19658-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+fbb3e0b24e8dae5a16ee@syzkaller.appspotmail.com
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/nilfs2/segment.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index a353ca3fc580..96c5cab5c8ae 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -875,9 +875,11 @@ static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci) nilfs_mdt_mark_dirty(nilfs->ns_cpfile); nilfs_cpfile_put_checkpoint( nilfs->ns_cpfile, nilfs->ns_cno, bh_cp); - } else - WARN_ON(err == -EINVAL || err == -ENOENT); - + } else if (err == -EINVAL || err == -ENOENT) { + nilfs_error(sci->sc_super, + "checkpoint creation failed due to metadata corruption."); + err = -EIO; + } return err; } @@ -891,7 +893,11 @@ static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci) err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 0, &raw_cp, &bh_cp); if (unlikely(err)) { - WARN_ON(err == -EINVAL || err == -ENOENT); + if (err == -EINVAL || err == -ENOENT) { + nilfs_error(sci->sc_super, + "checkpoint finalization failed due to metadata corruption."); + err = -EIO; + } goto failed_ibh; } raw_cp->cp_snapshot_list.ssl_next = 0; |