summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-12-15 12:51:42 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-12-15 12:51:42 -0800
commit66dbbd72005c5ebdd1de35ba5a41393f01df48d6 (patch)
tree67cbdbb1407e8592d79fbef1c86aea9510cd2f0e
parent07a20ed1e3c25925282aebb2f8cec0e3b5ae99b6 (diff)
parent14e3062fb18532175af4d1c4073597999f7a2248 (diff)
downloadlinux-sh-66dbbd72005c5ebdd1de35ba5a41393f01df48d6.tar.gz
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley: "The most important one is the bfa fix because it's easy to oops the kernel with this driver (this includes the commit that corrects the compiler warning in the original), a regression in the new timespec conversion in aacraid and a regression in the Fibre Channel ELS handling patch. The other three are a theoretical problem with termination in the vendor/host matching code and a use after free in lpfc. The additional patches are a fix for an I/O hang in the mq code under certain circumstances and a rare oops in some debugging code" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: core: Fix a scsi_show_rq() NULL pointer dereference scsi: MAINTAINERS: change FCoE list to linux-scsi scsi: libsas: fix length error in sas_smp_handler() scsi: bfa: fix type conversion warning scsi: core: run queue if SCSI device queue isn't ready and queue is idle scsi: scsi_devinfo: cleanly zero-pad devinfo strings scsi: scsi_devinfo: handle non-terminated strings scsi: bfa: fix access to bfad_im_port_s scsi: aacraid: address UBSAN warning regression scsi: libfc: fix ELS request handling scsi: lpfc: Use after free in lpfc_rq_buf_free()
-rw-r--r--MAINTAINERS2
-rw-r--r--drivers/scsi/aacraid/commsup.c8
-rw-r--r--drivers/scsi/bfa/bfad_bsg.c6
-rw-r--r--drivers/scsi/bfa/bfad_im.c6
-rw-r--r--drivers/scsi/bfa/bfad_im.h10
-rw-r--r--drivers/scsi/libfc/fc_lport.c4
-rw-r--r--drivers/scsi/libsas/sas_expander.c10
-rw-r--r--drivers/scsi/lpfc/lpfc_mem.c2
-rw-r--r--drivers/scsi/scsi_debugfs.c6
-rw-r--r--drivers/scsi/scsi_devinfo.c27
-rw-r--r--drivers/scsi/scsi_lib.c2
-rw-r--r--drivers/scsi/sd.c4
12 files changed, 54 insertions, 33 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 82ad0eabce4f..e626cb622dca 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5431,7 +5431,7 @@ F: drivers/media/tuners/fc2580*
FCOE SUBSYSTEM (libfc, libfcoe, fcoe)
M: Johannes Thumshirn <jth@kernel.org>
-L: fcoe-devel@open-fcoe.org
+L: linux-scsi@vger.kernel.org
W: www.Open-FCoE.org
S: Supported
F: drivers/scsi/libfc/
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index bec9f3193f60..80a8cb26cdea 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -2482,8 +2482,8 @@ int aac_command_thread(void *data)
/* Synchronize our watches */
if (((NSEC_PER_SEC - (NSEC_PER_SEC / HZ)) > now.tv_nsec)
&& (now.tv_nsec > (NSEC_PER_SEC / HZ)))
- difference = (((NSEC_PER_SEC - now.tv_nsec) * HZ)
- + NSEC_PER_SEC / 2) / NSEC_PER_SEC;
+ difference = HZ + HZ / 2 -
+ now.tv_nsec / (NSEC_PER_SEC / HZ);
else {
if (now.tv_nsec > NSEC_PER_SEC / 2)
++now.tv_sec;
@@ -2507,6 +2507,10 @@ int aac_command_thread(void *data)
if (kthread_should_stop())
break;
+ /*
+ * we probably want usleep_range() here instead of the
+ * jiffies computation
+ */
schedule_timeout(difference);
if (kthread_should_stop())
diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 72ca2a2e08e2..b2fa195adc7a 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -3135,7 +3135,8 @@ bfad_im_bsg_vendor_request(struct bsg_job *job)
struct fc_bsg_request *bsg_request = job->request;
struct fc_bsg_reply *bsg_reply = job->reply;
uint32_t vendor_cmd = bsg_request->rqst_data.h_vendor.vendor_cmd[0];
- struct bfad_im_port_s *im_port = shost_priv(fc_bsg_to_shost(job));
+ struct Scsi_Host *shost = fc_bsg_to_shost(job);
+ struct bfad_im_port_s *im_port = bfad_get_im_port(shost);
struct bfad_s *bfad = im_port->bfad;
void *payload_kbuf;
int rc = -EINVAL;
@@ -3350,7 +3351,8 @@ int
bfad_im_bsg_els_ct_request(struct bsg_job *job)
{
struct bfa_bsg_data *bsg_data;
- struct bfad_im_port_s *im_port = shost_priv(fc_bsg_to_shost(job));
+ struct Scsi_Host *shost = fc_bsg_to_shost(job);
+ struct bfad_im_port_s *im_port = bfad_get_im_port(shost);
struct bfad_s *bfad = im_port->bfad;
bfa_bsg_fcpt_t *bsg_fcpt;
struct bfad_fcxp *drv_fcxp;
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 24e657a4ec80..c05d6e91e4bd 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -546,6 +546,7 @@ int
bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
struct device *dev)
{
+ struct bfad_im_port_pointer *im_portp;
int error = 1;
mutex_lock(&bfad_mutex);
@@ -564,7 +565,8 @@ bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
goto out_free_idr;
}
- im_port->shost->hostdata[0] = (unsigned long)im_port;
+ im_portp = shost_priv(im_port->shost);
+ im_portp->p = im_port;
im_port->shost->unique_id = im_port->idr_id;
im_port->shost->this_id = -1;
im_port->shost->max_id = MAX_FCP_TARGET;
@@ -748,7 +750,7 @@ bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
sht->sg_tablesize = bfad->cfg_data.io_max_sge;
- return scsi_host_alloc(sht, sizeof(unsigned long));
+ return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
}
void
diff --git a/drivers/scsi/bfa/bfad_im.h b/drivers/scsi/bfa/bfad_im.h
index c81ec2a77ef5..06ce4ba2b7bc 100644
--- a/drivers/scsi/bfa/bfad_im.h
+++ b/drivers/scsi/bfa/bfad_im.h
@@ -69,6 +69,16 @@ struct bfad_im_port_s {
struct fc_vport *fc_vport;
};
+struct bfad_im_port_pointer {
+ struct bfad_im_port_s *p;
+};
+
+static inline struct bfad_im_port_s *bfad_get_im_port(struct Scsi_Host *host)
+{
+ struct bfad_im_port_pointer *im_portp = shost_priv(host);
+ return im_portp->p;
+}
+
enum bfad_itnim_state {
ITNIM_STATE_NONE,
ITNIM_STATE_ONLINE,
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index 5da46052e179..21be672679fb 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -904,10 +904,14 @@ static void fc_lport_recv_els_req(struct fc_lport *lport,
case ELS_FLOGI:
if (!lport->point_to_multipoint)
fc_lport_recv_flogi_req(lport, fp);
+ else
+ fc_rport_recv_req(lport, fp);
break;
case ELS_LOGO:
if (fc_frame_sid(fp) == FC_FID_FLOGI)
fc_lport_recv_logo_req(lport, fp);
+ else
+ fc_rport_recv_req(lport, fp);
break;
case ELS_RSCN:
lport->tt.disc_recv_req(lport, fp);
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index ca1566237ae7..3183d63de4da 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -2145,7 +2145,7 @@ void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
struct sas_rphy *rphy)
{
struct domain_device *dev;
- unsigned int reslen = 0;
+ unsigned int rcvlen = 0;
int ret = -EINVAL;
/* no rphy means no smp target support (ie aic94xx host) */
@@ -2179,12 +2179,12 @@ void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
ret = smp_execute_task_sg(dev, job->request_payload.sg_list,
job->reply_payload.sg_list);
- if (ret > 0) {
- /* positive number is the untransferred residual */
- reslen = ret;
+ if (ret >= 0) {
+ /* bsg_job_done() requires the length received */
+ rcvlen = job->reply_payload.payload_len - ret;
ret = 0;
}
out:
- bsg_job_done(job, ret, reslen);
+ bsg_job_done(job, ret, rcvlen);
}
diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c
index 56faeb049b4a..87c08ff37ddd 100644
--- a/drivers/scsi/lpfc/lpfc_mem.c
+++ b/drivers/scsi/lpfc/lpfc_mem.c
@@ -753,12 +753,12 @@ lpfc_rq_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp)
drqe.address_hi = putPaddrHigh(rqb_entry->dbuf.phys);
rc = lpfc_sli4_rq_put(rqb_entry->hrq, rqb_entry->drq, &hrqe, &drqe);
if (rc < 0) {
- (rqbp->rqb_free_buffer)(phba, rqb_entry);
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"6409 Cannot post to RQ %d: %x %x\n",
rqb_entry->hrq->queue_id,
rqb_entry->hrq->host_index,
rqb_entry->hrq->hba_index);
+ (rqbp->rqb_free_buffer)(phba, rqb_entry);
} else {
list_add_tail(&rqb_entry->hbuf.list, &rqbp->rqb_buffer_list);
rqbp->buffer_count++;
diff --git a/drivers/scsi/scsi_debugfs.c b/drivers/scsi/scsi_debugfs.c
index 01f08c03f2c1..c3765d29fd3f 100644
--- a/drivers/scsi/scsi_debugfs.c
+++ b/drivers/scsi/scsi_debugfs.c
@@ -8,9 +8,11 @@ void scsi_show_rq(struct seq_file *m, struct request *rq)
{
struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req);
int msecs = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc);
- char buf[80];
+ const u8 *const cdb = READ_ONCE(cmd->cmnd);
+ char buf[80] = "(?)";
- __scsi_format_command(buf, sizeof(buf), cmd->cmnd, cmd->cmd_len);
+ if (cdb)
+ __scsi_format_command(buf, sizeof(buf), cdb, cmd->cmd_len);
seq_printf(m, ", .cmd=%s, .retries=%d, allocated %d.%03d s ago", buf,
cmd->retries, msecs / 1000, msecs % 1000);
}
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index 78d4aa8df675..449ef5adbb2b 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -34,7 +34,6 @@ struct scsi_dev_info_list_table {
};
-static const char spaces[] = " "; /* 16 of them */
static blist_flags_t scsi_default_dev_flags;
static LIST_HEAD(scsi_dev_info_list);
static char scsi_dev_flags[256];
@@ -298,20 +297,13 @@ static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
size_t from_length;
from_length = strlen(from);
- strncpy(to, from, min(to_length, from_length));
- if (from_length < to_length) {
- if (compatible) {
- /*
- * NUL terminate the string if it is short.
- */
- to[from_length] = '\0';
- } else {
- /*
- * space pad the string if it is short.
- */
- strncpy(&to[from_length], spaces,
- to_length - from_length);
- }
+ /* This zero-pads the destination */
+ strncpy(to, from, to_length);
+ if (from_length < to_length && !compatible) {
+ /*
+ * space pad the string if it is short.
+ */
+ memset(&to[from_length], ' ', to_length - from_length);
}
if (from_length > to_length)
printk(KERN_WARNING "%s: %s string '%s' is too long\n",
@@ -458,7 +450,8 @@ static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
/*
* vendor strings must be an exact match
*/
- if (vmax != strlen(devinfo->vendor) ||
+ if (vmax != strnlen(devinfo->vendor,
+ sizeof(devinfo->vendor)) ||
memcmp(devinfo->vendor, vskip, vmax))
continue;
@@ -466,7 +459,7 @@ static struct scsi_dev_info_list *scsi_dev_info_list_find(const char *vendor,
* @model specifies the full string, and
* must be larger or equal to devinfo->model
*/
- mlen = strlen(devinfo->model);
+ mlen = strnlen(devinfo->model, sizeof(devinfo->model));
if (mmax < mlen || memcmp(devinfo->model, mskip, mlen))
continue;
return devinfo;
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 00742c50cd44..d9ca1dfab154 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1967,6 +1967,8 @@ static bool scsi_mq_get_budget(struct blk_mq_hw_ctx *hctx)
out_put_device:
put_device(&sdev->sdev_gendev);
out:
+ if (atomic_read(&sdev->device_busy) == 0 && !scsi_device_blocked(sdev))
+ blk_mq_delay_run_hw_queue(hctx, SCSI_QUEUE_DELAY);
return false;
}
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 24fe68522716..a028ab3322a9 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1312,6 +1312,7 @@ static int sd_init_command(struct scsi_cmnd *cmd)
static void sd_uninit_command(struct scsi_cmnd *SCpnt)
{
struct request *rq = SCpnt->request;
+ u8 *cmnd;
if (SCpnt->flags & SCMD_ZONE_WRITE_LOCK)
sd_zbc_write_unlock_zone(SCpnt);
@@ -1320,9 +1321,10 @@ static void sd_uninit_command(struct scsi_cmnd *SCpnt)
__free_page(rq->special_vec.bv_page);
if (SCpnt->cmnd != scsi_req(rq)->cmd) {
- mempool_free(SCpnt->cmnd, sd_cdb_pool);
+ cmnd = SCpnt->cmnd;
SCpnt->cmnd = NULL;
SCpnt->cmd_len = 0;
+ mempool_free(cmnd, sd_cdb_pool);
}
}