pve-qemu-qoup/debian/patches/extra/0002-scsi-megasas-Internal-cdbs-have-16-byte-length.patch
Fiona Ebner 10e1093325 update submodule and patches to QEMU 8.1.2
Bigger notable changes:

* Commit 1a30b0f5d7 ("block: .bdrv_open is non-coroutine and
  unlocked") broke the PVE backup patches, in particular setting up
  the backup dump block driver, because bdrv_new_open_driver() cannot
  be called from a coroutine. To fix it, bdrv_co_open() is used
  instead, and while it's a much more involved function, the result
  should be essentially the same. The only difference I noticed is
  that the BDRV_O_ALLOW_RDWR flag is also set in the resulting bds
  (block driver state), but that shouldn't hurt.

Smaller notable changes:

* aio_set_fd_handler() dropped its 'is_external' parameter stating
  that all callers now pass false in 60f782b6b7 ("aio: remove
  aio_disable_external() API"). The calls in the PVE patches also
  passed false, so just drop the parameter too.

* global_state_store() does not have a return value anymore, so the
  user in the PVE savevm-async patch was adapted. For context, see
  c33f1829f8 ("migration: never fail in global_state_store()").

* Renames affecting the PVE savevm-async patch:
  migrate_use_block() -> migrate_block() and ram_counters -> mig_stats
  9d4b1e5f22 ("migration: Move migrate_use_block() to options.c")
  aff3f6606d ("migration: Rename ram_counters to mig_stats")

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2023-10-24 15:01:23 +02:00

70 lines
2.9 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@roeck-us.net>
Date: Tue, 28 Feb 2023 09:11:29 -0800
Subject: [PATCH] scsi: megasas: Internal cdbs have 16-byte length
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Host drivers do not necessarily set cdb_len in megasas io commands.
With commits 6d1511cea0 ("scsi: Reject commands if the CDB length
exceeds buf_len") and fe9d8927e2 ("scsi: Add buf_len parameter to
scsi_req_new()"), this results in failures to boot Linux from affected
SCSI drives because cdb_len is set to 0 by the host driver.
Set the cdb length to its actual size to solve the problem.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(picked-up from https://lists.nongnu.org/archive/html/qemu-devel/2023-02/msg08653.html)
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
hw/scsi/megasas.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 32c70c9e99..984b6a3145 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -1781,7 +1781,7 @@ static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd, int frame_cmd)
uint8_t cdb[16];
int len;
struct SCSIDevice *sdev = NULL;
- int target_id, lun_id, cdb_len;
+ int target_id, lun_id;
lba_count = le32_to_cpu(cmd->frame->io.header.data_len);
lba_start_lo = le32_to_cpu(cmd->frame->io.lba_lo);
@@ -1790,7 +1790,6 @@ static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd, int frame_cmd)
target_id = cmd->frame->header.target_id;
lun_id = cmd->frame->header.lun_id;
- cdb_len = cmd->frame->header.cdb_len;
if (target_id < MFI_MAX_LD && lun_id == 0) {
sdev = scsi_device_find(&s->bus, 0, target_id, lun_id);
@@ -1805,15 +1804,6 @@ static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd, int frame_cmd)
return MFI_STAT_DEVICE_NOT_FOUND;
}
- if (cdb_len > 16) {
- trace_megasas_scsi_invalid_cdb_len(
- mfi_frame_desc(frame_cmd), 1, target_id, lun_id, cdb_len);
- megasas_write_sense(cmd, SENSE_CODE(INVALID_OPCODE));
- cmd->frame->header.scsi_status = CHECK_CONDITION;
- s->event_count++;
- return MFI_STAT_SCSI_DONE_WITH_ERROR;
- }
-
cmd->iov_size = lba_count * sdev->blocksize;
if (megasas_map_sgl(s, cmd, &cmd->frame->io.sgl)) {
megasas_write_sense(cmd, SENSE_CODE(TARGET_FAILURE));
@@ -1824,7 +1814,7 @@ static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd, int frame_cmd)
megasas_encode_lba(cdb, lba_start, lba_count, is_write);
cmd->req = scsi_req_new(sdev, cmd->index,
- lun_id, cdb, cdb_len, cmd);
+ lun_id, cdb, sizeof(cdb), cmd);
if (!cmd->req) {
trace_megasas_scsi_req_alloc_failed(
mfi_frame_desc(frame_cmd), target_id, lun_id);