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X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: wytk70VdpX3a0chUgwK4zjwitqyonsgQ76RPKAZ7osHBmWVZw9PD7omGxfQQyXwWSyFfjUdu7N9kKGyB96uke/JmsPzK56aCs87/aPJ+ZUI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN4PR10MB5589 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-06-10_08,2025-06-10_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 mlxlogscore=979 bulkscore=0 malwarescore=0 suspectscore=0 spamscore=0 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2505160000 definitions=main-2506100133 X-Proofpoint-GUID: GZg6xE5_7uz9dfCT7NxiQ4s7WGAJOZf_ X-Authority-Analysis: v=2.4 cv=BffY0qt2 c=1 sm=1 tr=0 ts=68485dc9 b=1 cx=c_pps a=zPCbziy225d3KhSqZt3L1A==:117 a=zPCbziy225d3KhSqZt3L1A==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=6IFa9wvqVegA:10 a=GoEa3M9JfhUA:10 a=8Ht5mTzImztgYP5ylZkA:9 a=QEXdDO2ut3YA:10 cc=ntf awl=host:13206 X-Proofpoint-ORIG-GUID: GZg6xE5_7uz9dfCT7NxiQ4s7WGAJOZf_ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjEwMDEzMyBTYWx0ZWRfX5HqLD9C4cB2X 9IJecwXLtjXO7aTvtW1JWyq9uqjhlDf/U72C7L/890Qpxqc79BGawmI/mHgf391MY6tvxwqvWFU +80r7Dsic/j/U8rapXpVQLYbHwjefvIpW60Rq6EjCVR0gqpBoSU5fP5DDOpAlCWAxyTxy6mGB32 dM120vyfKgFE41M+hFzHftHBZafijhRUTncFKZ62nfshJKO+8xscG2n3dAFbzteV0/lmCz8Ypx5 aw9Fd0E+SfWKLYaMkupXN3ICkAfTsXkD9wYSp82akK47jyoBfnGt1BPflEPPa/tCfWwpsRSH0Nt QjiPwTZIn3lszgNVc3bJ8Xz7VmICpH8Kkwb8JCQz2auMPPsqPFbrkSnXcFhEFAGrs8F5hcJSg/v +AZqH5Rgem2GVIol4PVdyNTFqe+3cL/2B/KCMSguLaDM6X0RpX4or9yAyaFO9VWiKviVK4bS On 6/10/25 9:18 AM, Stefano Garzarella wrote: > On Sat, Jun 07, 2025 at 12:18:15PM -0500, Mike Christie wrote: >> As part of the normal initiator side scanning the guest's scsi layer >> will loop over all possible targets and send an inquiry. Since the >> max number of targets for virtio-scsi is 256, this results in 255 >> error messages about targets not existing. When there's more than 1 >> vhost-scsi device, then you get N * 255 log messages. >> >> It looks like the log message was added by accident in: >> >> commit 09d7583294aa ("vhost/scsi: Use common handling code in request >> queue handler") > > IIUC that commit just moved the code, but it looks like it was added by > commit 3f8ca2e115e5 ("vhost/scsi: Extract common handling code from > control queue handler") I saw that and was not 100% sure what patch to blame. Your commit adds the new vhost_scsi_get_req function which adds the vq_err call. It also hooks the control queue handler into it (control == SCSI task management like LUN_RESET). With just this patch we don't see a problem yet because the normal SCSI command handler is not using it yet. My commit hooks the normal SCSI command handler into the new vhost_scsi_get_req function. The SCSI command handler calling the new function is what hits the problem because it's the SCSI INQUIRY command going through this path during scanning that hits the problem.