On Tue, May 21, 2013 at 07:40:16PM -0400, Dave Jones wrote:
> On Wed, May 22, 2013 at 09:34:29AM +1000, Dave Chinner wrote:
> > On Tue, May 21, 2013 at 06:52:57PM -0400, Dave Jones wrote:
> > > [ 464.210598] XFS: Assertion failed: (mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0, file: fs/xfs/xfs_iops.c, line: 719
> >
> > Never seen that fire before, but this is why we have ASSERT()s like
> > this - we're being handed something by the VFS we don't expect...
> >
> > Can you give me some context of the file permissions before the
> > syscall and what the syscall parameters are? i.e. is this likely to
> > be trying to strip SUID/SGID during the truncate operation?
>
> no idea tbh. Is there something I can add to that assert to dump
> which file it was triggered by ?
Convert the assert to a if (), and then in the body do something
like:
if (mask & (...) {
char buf[MAX_PATHLEN];
d_path(VFS_I(ip)->i_dentry, buf, MAXPATHLEN);
xfs_warn(mp, "%s: mask 0x%x mismatch on file %s\n",
__func__, mask, buf);
ASSERT(0);
}
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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