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| author | Michael Kelley <mikelley@microsoft.com> | 2023-07-07 21:01:26 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-07-11 12:38:49 -0400 |
| commit | f4d1a8e011909fee24643f84bd1196e1366c26f2 (patch) | |
| tree | 93ddfc77a27d24aaa6db39cd4676b96a8793aaad /drivers/scsi/storvsc_drv.c | |
| parent | e96277a570cda96f1363a051b6a1a321f2ec2d35 (diff) | |
| download | linux-stable-f4d1a8e011909fee24643f84bd1196e1366c26f2.tar.gz linux-stable-f4d1a8e011909fee24643f84bd1196e1366c26f2.tar.bz2 linux-stable-f4d1a8e011909fee24643f84bd1196e1366c26f2.zip | |
scsi: storvsc: Handle SRB status value 0x30
In response to a disk I/O request, Hyper-V has been observed to return SRB
status value 0x30. This indicates the request was not processed by Hyper-V
because low memory conditions on the host caused an internal error. The
0x30 status is not recognized by storvsc, so the I/O operation is not
flagged as an error. The request is treated as if it completed normally but
with zero data transferred, causing a flood of retries.
Add a definition for this SRB status value and handle it like other error
statuses from the Hyper-V host.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1688788886-94279-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 659196a2f63a..7f12d931fe7c 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -318,6 +318,7 @@ enum storvsc_request_type { #define SRB_STATUS_INVALID_REQUEST 0x06 #define SRB_STATUS_DATA_OVERRUN 0x12 #define SRB_STATUS_INVALID_LUN 0x20 +#define SRB_STATUS_INTERNAL_ERROR 0x30 #define SRB_STATUS(status) \ (status & ~(SRB_STATUS_AUTOSENSE_VALID | SRB_STATUS_QUEUE_FROZEN)) @@ -978,6 +979,7 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb, case SRB_STATUS_ERROR: case SRB_STATUS_ABORTED: case SRB_STATUS_INVALID_REQUEST: + case SRB_STATUS_INTERNAL_ERROR: if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID) { /* Check for capacity change */ if ((asc == 0x2a) && (ascq == 0x9)) { |