projects/linux·commit f909e534

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

f909e534 · Linus Torvalds <[email protected]> · 2026-10-18 09:06:02 -10:00

Pull SCSI fixes from James Bottomley:
 "All fixes in drivers (or the tape ULD) and one core fix to bsg (the
  block ioctl equivalent of sg_io).

  The biggest is the race in auth updates fix in iscsi configfs, but the
  next biggest one is in bsg but the generic pieces of that are mostly
  threading reply_len"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies
  scsi: libsas: Fix SMP IO deadlock during HA resume
  scsi: libiscsi: Validate the task named by a management response
  scsi: libiscsi: Validate the ITT reflected in a Reject PDU
  scsi: libiscsi: Reject a negative task index from parse_pdu_itt
  scsi: target: iscsi: Fix race in discovery auth updates
  scsi: target: Disable interrupts while holding delayed_cmd_lock
  scsi: st: Fix use-after-free race between st_remove() and st_open()
  scsi: st: Save the visited block for the partition the drive is in
  scsi: xen/scsifront: Check for a NULL shadow entry on a backend response
Commit
f909e534f5e34feb2ea2701d54df63e21aa506fc
Parents
8486d357 · ec6b0839

Merge commit. Changes below are compared with the first parent: 8486d357.

Changes

13 files changed · +79 −36

FileStatusAddDelContent
block/bsg-lib.cmodified+10−3View file
drivers/scsi/libiscsi.cmodified+8−6View file
drivers/scsi/libsas/sas_expander.cmodified+12−2View file
drivers/scsi/mpi3mr/mpi3mr_app.cmodified+1−1View file
drivers/scsi/scsi_transport_fc.cmodified+4−2View file
drivers/scsi/scsi_transport_iscsi.cmodified+1−1View file
drivers/scsi/scsi_transport_sas.cmodified+4−2View file
drivers/scsi/st.cmodified+12−6View file
drivers/scsi/xen-scsifront.cmodified+1−0View file
drivers/target/iscsi/iscsi_target_configfs.cmodified+19−7View file
drivers/target/target_core_transport.cmodified+4−4View file
drivers/ufs/core/ufs_bsg.cmodified+1−1View file
include/linux/bsg-lib.hmodified+2−1View file

block/bsg-lib.c

View file
diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index 895db30..536cee4 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -23,11 +23,14 @@ struct bsg_set {
struct bsg_device *bd;
bsg_job_fn *job_fn;
bsg_timeout_fn *timeout_fn;
+ unsigned int reply_len;
};
static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr,
bool open_for_write, unsigned int timeout)
{
+ struct bsg_set *bset =
+ container_of(q->tag_set, struct bsg_set, tag_set);
struct bsg_job *job;
struct request *rq;
struct bio *bio;
@@ -50,7 +53,7 @@ static int bsg_transport_sg_io_fn(struct request_queue *q, struct sg_io_v4 *hdr,
reply = job->reply;
memset(job, 0, sizeof(*job));
job->reply = reply;
- job->reply_len = SCSI_SENSE_BUFFERSIZE;
+ job->reply_len = bset->reply_len;
job->dd_data = job + 1;
job->request_len = hdr->request_len;
@@ -301,9 +304,10 @@ out:
static int bsg_init_rq(struct blk_mq_tag_set *set, struct request *req,
unsigned int hctx_idx, int numa_node)
{
+ struct bsg_set *bset = container_of(set, struct bsg_set, tag_set);
struct bsg_job *job = blk_mq_rq_to_pdu(req);
- job->reply = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
+ job->reply = kzalloc(bset->reply_len, GFP_KERNEL);
if (!job->reply)
return -ENOMEM;
return 0;
@@ -358,10 +362,12 @@ static const struct blk_mq_ops bsg_mq_ops = {
* @job_fn: bsg job handler
* @timeout: timeout handler function pointer
* @dd_job_size: size of LLD data needed for each job
+ * @reply_len: size of the reply buffer needed for each job
*/
struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
struct queue_limits *lim, bsg_job_fn *job_fn,
- bsg_timeout_fn *timeout, int dd_job_size)
+ bsg_timeout_fn *timeout, int dd_job_size,
+ unsigned int reply_len)
{
struct bsg_set *bset;
struct blk_mq_tag_set *set;
@@ -374,6 +380,7 @@ struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
bset->job_fn = job_fn;
bset->timeout_fn = timeout;
+ bset->reply_len = reply_len;
set = &bset->tag_set;
set->ops = &bsg_mq_ops;

drivers/scsi/libiscsi.c

View file
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 5cbc518..5bfdb30 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1142,13 +1142,15 @@ static int iscsi_handle_reject(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
spin_unlock(&conn->session->frwd_lock);
spin_lock(&conn->session->back_lock);
} else {
- struct iscsi_task *task;
+ struct iscsi_task *task = NULL;
/*
* Our nop as ping got dropped. We know the target
* and transport are ok so just clean up
*/
- task = iscsi_itt_to_task(conn, rejected_pdu.itt);
- if (!task) {
+ if (!iscsi_verify_itt(conn, rejected_pdu.itt))
+ task = iscsi_itt_to_task(conn, rejected_pdu.itt);
+ if (!task || task->state == ISCSI_TASK_FREE ||
+ task->sc) {
iscsi_conn_printk(KERN_ERR, conn,
"Invalid pdu reject. Could "
"not lookup rejected task.\n");
@@ -1191,7 +1193,7 @@ struct iscsi_task *iscsi_itt_to_task(struct iscsi_conn *conn, itt_t itt)
session->tt->parse_pdu_itt(conn, itt, &i, NULL);
else
i = get_itt(itt);
- if (i >= session->cmds_max)
+ if (i < 0 || i >= session->cmds_max)
return NULL;
return session->cmds[i];
@@ -1284,7 +1286,7 @@ int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
case ISCSI_OP_SCSI_TMFUNC_RSP:
case ISCSI_OP_NOOP_IN:
task = iscsi_itt_to_task(conn, hdr->itt);
- if (!task)
+ if (!task || task->state == ISCSI_TASK_FREE || task->sc)
return ISCSI_ERR_BAD_ITT;
break;
default:
@@ -1384,7 +1386,7 @@ int iscsi_verify_itt(struct iscsi_conn *conn, itt_t itt)
return ISCSI_ERR_BAD_ITT;
}
- if (i >= session->cmds_max) {
+ if (i < 0 || i >= session->cmds_max) {
iscsi_conn_printk(KERN_ERR, conn,
"received invalid itt index %u (max cmds "
"%u.\n", i, session->cmds_max);

drivers/scsi/libsas/sas_expander.c

View file
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 811c9eb..26c2099 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -62,7 +62,11 @@ static int smp_execute_task_sg(struct domain_device *dev,
to_sas_internal(dev->port->ha->shost->transportt);
struct sas_ha_struct *ha = dev->port->ha;
- pm_runtime_get_sync(ha->dev);
+ /*
+ * Non-blocking: a sync resume here would deadlock against
+ * sas_drain_work() during HA resume.
+ */
+ pm_runtime_get_noresume(ha->dev);
mutex_lock(&dev->ex_dev.cmd_mutex);
for (retry = 0; retry < 3; retry++) {
if (test_bit(SAS_DEV_GONE, &dev->state)) {
@@ -135,7 +139,7 @@ static int smp_execute_task_sg(struct domain_device *dev,
}
}
mutex_unlock(&dev->ex_dev.cmd_mutex);
- pm_runtime_put_sync(ha->dev);
+ pm_runtime_put(ha->dev);
BUG_ON(retry == 3 && task != NULL);
sas_free_task(task);
@@ -2222,6 +2226,11 @@ void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
goto out;
}
+ /* The host may have autosuspended, resume it here. */
+ ret = pm_runtime_resume_and_get(dev->port->ha->dev);
+ if (ret)
+ goto out;
+
ret = smp_execute_task_sg(dev, job->request_payload.sg_list,
job->reply_payload.sg_list);
if (ret >= 0) {
@@ -2229,6 +2238,7 @@ void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
rcvlen = job->reply_payload.payload_len - ret;
ret = 0;
}
+ pm_runtime_put(dev->port->ha->dev);
out:
bsg_job_done(job, ret, rcvlen);

drivers/scsi/mpi3mr/mpi3mr_app.c

View file
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c
index 1353a8f..0944907 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_app.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_app.c
@@ -3053,7 +3053,7 @@ void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc)
}
q = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), &lim,
- mpi3mr_bsg_request, NULL, 0);
+ mpi3mr_bsg_request, NULL, 0, SCSI_SENSE_BUFFERSIZE);
if (IS_ERR(q)) {
ioc_err(mrioc, "%s: bsg registration failed\n",
dev_name(bsg_dev));

drivers/scsi/scsi_transport_fc.c

View file
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 173ed63..b66365a 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -4345,7 +4345,8 @@ fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
scsi_init_limits(shost, &lim);
lim.max_segments = min_not_zero(lim.max_segments, i->f->max_bsg_segments);
q = bsg_setup_queue(dev, bsg_name, &lim, fc_bsg_dispatch,
- fc_bsg_job_timeout, i->f->dd_bsg_size);
+ fc_bsg_job_timeout, i->f->dd_bsg_size,
+ SCSI_SENSE_BUFFERSIZE);
if (IS_ERR(q)) {
dev_err(dev,
"fc_host%d: bsg interface failed to initialize - setup queue\n",
@@ -4378,7 +4379,8 @@ fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport)
scsi_init_limits(shost, &lim);
lim.max_segments = min_not_zero(lim.max_segments, i->f->max_bsg_segments);
q = bsg_setup_queue(dev, dev_name(dev), &lim, fc_bsg_dispatch_prep,
- fc_bsg_job_timeout, i->f->dd_bsg_size);
+ fc_bsg_job_timeout, i->f->dd_bsg_size,
+ SCSI_SENSE_BUFFERSIZE);
if (IS_ERR(q)) {
dev_err(dev, "failed to setup bsg queue\n");
return PTR_ERR(q);

drivers/scsi/scsi_transport_iscsi.c

View file
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 8aa76f8..b50ff8a 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -1545,7 +1545,7 @@ iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost)
snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no);
scsi_init_limits(shost, &lim);
q = bsg_setup_queue(dev, bsg_name, &lim, iscsi_bsg_host_dispatch, NULL,
- 0);
+ 0, SCSI_SENSE_BUFFERSIZE);
if (IS_ERR(q)) {
shost_printk(KERN_ERR, shost, "bsg interface failed to "
"initialize - no request queue\n");

drivers/scsi/scsi_transport_sas.c

View file
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index d689b9e..a825966 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -199,7 +199,8 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
if (rphy) {
q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev), NULL,
- sas_smp_dispatch, NULL, 0);
+ sas_smp_dispatch, NULL, 0,
+ SCSI_SENSE_BUFFERSIZE);
if (IS_ERR(q))
return PTR_ERR(q);
rphy->q = q;
@@ -208,7 +209,8 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
snprintf(name, sizeof(name), "sas_host%d", shost->host_no);
q = bsg_setup_queue(&shost->shost_gendev, name, NULL,
- sas_smp_dispatch, NULL, 0);
+ sas_smp_dispatch, NULL, 0,
+ SCSI_SENSE_BUFFERSIZE);
if (IS_ERR(q))
return PTR_ERR(q);
to_sas_host_attrs(shost)->q = q;

drivers/scsi/st.c

View file
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index f1c3c49..a757646 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -3217,14 +3217,20 @@ static int set_location(struct scsi_tape *STp, unsigned int block, int partition
partition >= ST_NBR_PARTITIONS)
return (-EINVAL);
if (partition != STp->partition) {
- if (get_location(STp, &blk, &p, 1))
+ /*
+ * Save the location for the partition the drive reports,
+ * not for STp->partition: after a reset STp->partition may
+ * not match the partition the drive is in.
+ */
+ if (get_location(STp, &blk, &p, 1) ||
+ p < 0 || p >= ST_NBR_PARTITIONS)
STps->last_block_valid = 0;
else {
- STps->last_block_valid = 1;
- STps->last_block_visited = blk;
+ STp->ps[p].last_block_valid = 1;
+ STp->ps[p].last_block_visited = blk;
DEBC_printk(STp, "Visited block %d for "
"partition %d saved.\n",
- blk, STp->partition);
+ blk, p);
}
}
@@ -4509,11 +4515,11 @@ static void st_remove(struct scsi_device *SDp)
remove_cdevs(tpnt);
mutex_lock(&st_ref_mutex);
- kref_put(&tpnt->kref, scsi_tape_release);
- mutex_unlock(&st_ref_mutex);
spin_lock(&st_index_lock);
idr_remove(&st_index_idr, index);
spin_unlock(&st_index_lock);
+ kref_put(&tpnt->kref, scsi_tape_release);
+ mutex_unlock(&st_ref_mutex);
}
/**

drivers/scsi/xen-scsifront.c

View file
diff --git a/drivers/scsi/xen-scsifront.c b/drivers/scsi/xen-scsifront.c
index 989bcae..aa44a23 100644
--- a/drivers/scsi/xen-scsifront.c
+++ b/drivers/scsi/xen-scsifront.c
@@ -367,6 +367,7 @@ static void scsifront_do_response(struct vscsifrnt_info *info,
struct vscsifrnt_shadow *shadow;
if (ring_rsp->rqid >= VSCSIIF_MAX_REQS ||
+ !info->shadow[ring_rsp->rqid] ||
!info->shadow[ring_rsp->rqid]->inflight) {
scsifront_set_error(info, "illegal rqid returned by backend!");
return;

drivers/target/iscsi/iscsi_target_configfs.c

View file
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index 704ec94..e1aa0af 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1306,17 +1306,24 @@ static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
return -EINVAL;
}
+ if (iscsit_get_tpg(discovery_tpg) < 0)
+ return -EINVAL;
+
param = iscsi_find_param_from_key(AUTHMETHOD,
discovery_tpg->param_list);
- if (!param)
- return -EINVAL;
+ if (!param) {
+ err = -EINVAL;
+ goto out;
+ }
if (op) {
/*
* Reset the AuthMethod key to CHAP.
*/
- if (iscsi_update_param_value(param, CHAP) < 0)
- return -EINVAL;
+ if (iscsi_update_param_value(param, CHAP) < 0) {
+ err = -EINVAL;
+ goto out;
+ }
discovery_tpg->tpg_attrib.authentication = 1;
iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
@@ -1327,8 +1334,10 @@ static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
/*
* Reset the AuthMethod key to CHAP,None
*/
- if (iscsi_update_param_value(param, "CHAP,None") < 0)
- return -EINVAL;
+ if (iscsi_update_param_value(param, "CHAP,None") < 0) {
+ err = -EINVAL;
+ goto out;
+ }
discovery_tpg->tpg_attrib.authentication = 0;
iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
@@ -1337,7 +1346,10 @@ static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
" Discovery TPG\n");
}
- return count;
+ err = count;
+out:
+ iscsit_put_tpg(discovery_tpg);
+ return err;
}
CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);

drivers/target/target_core_transport.c

View file
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index dcfe945..67c0465 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2359,7 +2359,7 @@ void target_do_delayed_work(struct work_struct *work)
struct se_device *dev = container_of(work, struct se_device,
delayed_cmd_work);
- spin_lock(&dev->delayed_cmd_lock);
+ spin_lock_irq(&dev->delayed_cmd_lock);
while (!dev->ordered_sync_in_progress) {
struct se_cmd *cmd;
@@ -2380,12 +2380,12 @@ void target_do_delayed_work(struct work_struct *work)
dev->ordered_sync_in_progress = true;
list_del(&cmd->se_delayed_node);
- spin_unlock(&dev->delayed_cmd_lock);
+ spin_unlock_irq(&dev->delayed_cmd_lock);
__target_execute_cmd(cmd, true);
- spin_lock(&dev->delayed_cmd_lock);
+ spin_lock_irq(&dev->delayed_cmd_lock);
}
- spin_unlock(&dev->delayed_cmd_lock);
+ spin_unlock_irq(&dev->delayed_cmd_lock);
}
static void transport_complete_ordered_sync(struct se_cmd *cmd)

drivers/ufs/core/ufs_bsg.c

View file
diff --git a/drivers/ufs/core/ufs_bsg.c b/drivers/ufs/core/ufs_bsg.c
index 7a66917..156637d 100644
--- a/drivers/ufs/core/ufs_bsg.c
+++ b/drivers/ufs/core/ufs_bsg.c
@@ -258,7 +258,7 @@ int ufs_bsg_probe(struct ufs_hba *hba)
goto out;
q = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), NULL, ufs_bsg_request,
- NULL, 0);
+ NULL, 0, sizeof(struct ufs_rpmb_reply));
if (IS_ERR(q)) {
ret = PTR_ERR(q);
device_del(bsg_dev);

include/linux/bsg-lib.h

View file
diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h
index 14fa932..a697246 100644
--- a/include/linux/bsg-lib.h
+++ b/include/linux/bsg-lib.h
@@ -66,7 +66,8 @@ void bsg_job_done(struct bsg_job *job, int result,
unsigned int reply_payload_rcv_len);
struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
struct queue_limits *lim, bsg_job_fn *job_fn,
- bsg_timeout_fn *timeout, int dd_job_size);
+ bsg_timeout_fn *timeout, int dd_job_size,
+ unsigned int reply_len);
void bsg_remove_queue(struct request_queue *q);
void bsg_job_put(struct bsg_job *job);
int __must_check bsg_job_get(struct bsg_job *job);