On Thu, Apr 03, 2014 at 12:33:55PM -0400, Mark Lord wrote: > This commit from linux-3.14 breaks our NFS-root clients here: > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e14b46b91fee8a049b0940333ce13a820beaaa5 > > > - *p++ = htonl((u32) stat->mode); > + *p++ = htonl((u32) (stat->mode & S_IALLUGO)); > > > Reverting the one-liner above (on the server) fixes it for us, > as does reverting back to linux-3.13.8 on the server. > > The NFS-root clients are on PowerPC (big-endian) architecture, > running linux-3.12.16. The NFS server is on an Intel PC running linux-3.14. > > ACL is completely disabled on server and client, > and we're using NFSv2/v3. No support for v4. > > I instrumented the function to see what other bits were being cleared > by the (stat->mode & S_IALLUGO) masking. The results are attached. Hm, it sounds like a bug in the client if it's depending on those high bits. The original behavior was in practice harmless and changing it broke something, so I think we should definitely just revert this patch. But the client may need fixing too. --b. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
