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| author | Ryusuke Konishi <konishi.ryusuke@gmail.com> | 2023-01-27 14:22:02 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-03 07:50:10 +0100 |
| commit | 602ce7b8e1343b19c0cf93a3dd1926838ac5a1cc (patch) | |
| tree | e9daaa4d0ac597159dd733d2f39cad33a3e99885 /scripts | |
| parent | lib/zlib: remove redundation assignement of avail_in dfltcc_gdht() (diff) | |
| download | linux-602ce7b8e1343b19c0cf93a3dd1926838ac5a1cc.tar.xz linux-602ce7b8e1343b19c0cf93a3dd1926838ac5a1cc.zip | |
nilfs2: prevent WARNING in nilfs_dat_commit_end()
If nilfs2 reads a corrupted disk image and its DAT metadata file contains
invalid lifetime data for a virtual block number, a kernel warning can be
generated by the WARN_ON check in nilfs_dat_commit_end() and can panic if
the kernel is booted with panic_on_warn.
This patch avoids the issue with a sanity check that treats it as an
error.
Since error return is not allowed in the execution phase of
nilfs_dat_commit_end(), this inserts that sanity check in
nilfs_dat_prepare_end(), which prepares for nilfs_dat_commit_end().
As the error code, -EINVAL is returned to notify bmap layer of the
metadata corruption. When the bmap layer sees this code, it handles the
abnormal situation and replaces the return code with -EIO as it should.
Link: https://lkml.kernel.org/r/000000000000154d2c05e9ec7df6@google.com
Link: https://lkml.kernel.org/r/20230127132202.6083-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: <syzbot+cbff7a52b6f99059e67f@syzkaller.appspotmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions