On 11/15/15 10:06, Christoph Hellwig wrote:
FYI, I sent a patch for the zero S/G length issue. With this xfstests
does fine for ext4 and btrfs. With XFS I still run into corruption
warnings for the slab use after free poison pattern. I suspect that
issue might be related to uniqueue XFS I/O patterns. One thing that
might be related is that XFS can submit bios backed by kmalloced memory.
I've also tested XFS on various other storage devices on the same kernel
and didn't see an issue like that just to be sure.
Thanks for submitting that patch.
Did I understand correctly that page-aligned I/O works fine but I/O that
is not aligned on a page boundary not ? Have you already had the time to
verify whether the "IB/srp: Convert to new registration API" patch is
the patch that introduced this issue ?
BTW, another location where a buffer is used that is not aligned on a
page boundary is the scsi_probe_and_add_lun() function. If a crash
occurs while probing LUNs or lsscsi shows garbled data for SRP LUNs that
might indicate a problem in the buffer mapping or registration code.
Bart.
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
