Re: [vfs mnt_set_mountpoint] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC

From: Eric W. Biederman
Date: Tue Aug 19 2014 - 23:56:59 EST


Fengguang Wu <fengguang.wu@xxxxxxxxx> writes:

> // Fix email address for Eric and add another oops message.
> // This commit seem to generate all kinds of oops.

My apologies about the email. This patch has taken so long to get
somewhere that email address has bit-rotted.

> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 89f7ca1af15bdfe7a6aed343032a84af2a69f736
> Author: Eric W. Biederman <ebiederman@xxxxxxxxxxx>
> AuthorDate: Sun Sep 22 19:37:01 2013 -0700
> Commit: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> CommitDate: Sun Aug 17 07:02:00 2014 -0400
>
> vfs: Keep a list of mounts on a mount point
>
> To spot any possible problems call BUG if a mountpoint
> is put when it's list of mounts is not empty.
>
> AV: use hlist instead of list_head

Hugh Dickins has a fix for an unitialized field he has sent to Stephen
Rothwell.

> Reviewed-by: Miklos Szeredi <miklos@xxxxxxxxxx>
> Signed-off-by: Eric W. Biederman <ebiederman@xxxxxxxxxxx>
> Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

I expect Al will sort things out when he get home from kernel summit.

Eric
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