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Date: Tue, 12 Dec 2017 08:21:26 -0800
From: James Bottomley <James.Bottomley@...senPartnership.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] SCSI fixes for 4.15-rc3
The most important one is the bfa fix because it's easy to oops the
kernel with this driver, 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 patch is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
The short changelog is:
Arnd Bergmann (1):
scsi: aacraid: address UBSAN warning regression
Dan Carpenter (1):
scsi: lpfc: Use after free in lpfc_rq_buf_free()
Johannes Thumshirn (1):
scsi: bfa: fix access to bfad_im_port_s
Martin Wilck (3):
scsi: scsi_devinfo: cleanly zero-pad devinfo strings
scsi: scsi_devinfo: handle non-terminated strings
scsi: libfc: fix ELS request handling
With the diffstat:
drivers/scsi/aacraid/commsup.c | 8 ++++++--
drivers/scsi/bfa/bfad_bsg.c | 6 ++++--
drivers/scsi/libfc/fc_lport.c | 4 ++++
drivers/scsi/lpfc/lpfc_mem.c | 2 +-
drivers/scsi/scsi_devinfo.c | 27 ++++++++++-----------------
5 files changed, 25 insertions(+), 22 deletions(-)
And full diff below
James
---
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..09ef68c8225f 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 = shost->hostdata[0];
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 = shost->hostdata[0];
struct bfad_s *bfad = im_port->bfad;
bfa_bsg_fcpt_t *bsg_fcpt;
struct bfad_fcxp *drv_fcxp;
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/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_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;
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