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 da...@fromorbit.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/