Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1540381

Re: 4.8.12, crash in ext4, __d_lookup_rcu

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

On Mon, Dec 12, Theodore Ts'o wrote:

> What was going on at the time of the crash, and can you reproduce this?

Its the 'rm -rf $dir/$oldbackup.N' at the end of each rsnapshot run.
I will try to reproduce it, see if it happens again during the hourly
rsnapshot runs. So far I have not seen it with 4.8.x, cant remember if
it already happend with earlier kernels.

> There was a huge number of messages about ISO 9660 and accesses beyond
> the end of the loop device, and I wonder if any of this might have
> been connected to the crash.

This was an ISO image with download in progress. Since the download was
slow I mounted what was already available, which was enough to make the
installer happy. But a few files are located at the end of the image,
and the loopN block device does not autogrow as more data became
available. The ISOs are on another drive than the backup disk. Not sure
if such an incomplete iso9660 filesystem can confuse the vfs layer?

Olaf

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: 4.8.12, crash in ext4, __d_lookup_rcu Olaf Hering <olaf@aepfle.de> - 2016-12-12 10:10 +0100
  Re: 4.8.12, crash in ext4, __d_lookup_rcu Theodore Ts'o <tytso@mit.edu> - 2016-12-12 16:10 +0100
    Re: 4.8.12, crash in ext4, __d_lookup_rcu Olaf Hering <olaf@aepfle.de> - 2016-12-12 16:30 +0100
      Re: 4.8.12, crash in ext4, __d_lookup_rcu Olaf Hering <olaf@aepfle.de> - 2016-12-12 16:30 +0100

csiph-web