This bug was fixed in the package linux - 3.18.0-8.9
---------------
linux (3.18.0-8.9) vivid; urgency=low
[ Leann Ogasawara ]
* Release Tracking Bug
- LP: #1407692
* rebase to v3.18.1
* ubuntu: AUFS -- Resolve build failure union has no member named
'd_child'
[ Upstream Kernel Changes ]
* arm64: optimized copy_to_user and copy_from_user assembly code
- LP: #1400349
* x86, kvm: Clear paravirt_enabled on KVM guests for espfix32's benefit
- LP: #1400314
- CVE-2014-8134
* rebase to v3.18.1
-- Leann Ogasawara <leann.ogasaw...@canonical.com> Mon, 05 Jan 2015 09:12:32
-0800
** Changed in: linux (Ubuntu Vivid)
Status: Fix Committed => Fix Released
** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2014-8134
--
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https://bugs.launchpad.net/bugs/1400289
Title:
Hyper-V: drivers:scsi:storvsc: Fix a bug in handling ring buffer
failures that may result in I/O freeze
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Precise:
Fix Committed
Status in linux source package in Trusty:
Fix Committed
Status in linux source package in Utopic:
Fix Committed
Status in linux source package in Vivid:
Fix Released
Bug description:
As requested by Microsoft.
===
Andy,
Could you pick up this patch. Customers are hitting this issue on
Azure (on Canonical images).
Regards,
K. Y
===
drivers:scsi:storvsc: Fix a bug in handling ring buffer failures that may
result in I/O freeze
When ring buffer returns an error indicating retry, storvsc may not
return a proper error code to SCSI when bounce buffer is not used.
This has introduced I/O freeze on RAID running atop storvsc devices.
This patch fixes it by always returning a proper error code.
Signed-off-by: Long Li <lon...@microsoft.com>
Reviewed-by: K. Y. Srinivasan <k...@microsoft.com>
---
drivers/scsi/storvsc_drv.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index e3ba251..4cff0dd 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1688,13 +1688,12 @@ static int storvsc_queuecommand(struct Scsi_Host
*host, struct scsi_cmnd *scmnd)
if (ret == -EAGAIN) {
/* no more space */
- if (cmd_request->bounce_sgl_count) {
+ if (cmd_request->bounce_sgl_count)
destroy_bounce_buffer(cmd_request->bounce_sgl,
cmd_request->bounce_sgl_count);
- ret = SCSI_MLQUEUE_DEVICE_BUSY;
- goto queue_error;
- }
+ ret = SCSI_MLQUEUE_DEVICE_BUSY;
+ goto queue_error;
}
return 0;
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