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From: Bandan <bsd@redhat.com>
To: qemu-devel@nongnu.org
Cc: kraxel@redhat.com
Subject: [Qemu-devel] [PATCH 1/2] usb-mtp: Add some NULL checks for issues pointed out by coverity
Date: Thu,  3 May 2018 15:20:27 -0400	[thread overview]
Message-ID: <20180503192028.14353-2-bsd@redhat.com> (raw)
In-Reply-To: <20180503192028.14353-1-bsd@redhat.com>

From: Bandan Das <bsd@redhat.com>

CID 1390578: In usb_mtp_write_metadata, parent can never be NULL but
just in case, add an assert
CID 1390592: Check for o->format only if o !=NULL
CID 1390604: Check s->data_out != NULL in usb_mtp_handle_data

Signed-off-by: Bandan Das <bsd@redhat.com>
---
 hw/usb/dev-mtp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/usb/dev-mtp.c b/hw/usb/dev-mtp.c
index 6ecf70a79b..24cff640c0 100644
--- a/hw/usb/dev-mtp.c
+++ b/hw/usb/dev-mtp.c
@@ -1446,8 +1446,7 @@ static void usb_mtp_command(MTPState *s, MTPControl *c)
             if (o == NULL) {
                 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, c->trans,
                                      0, 0, 0, 0);
-            }
-            if (o->format != FMT_ASSOCIATION) {
+            } else if (o->format != FMT_ASSOCIATION) {
                 usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT, c->trans,
                                      0, 0, 0, 0);
             }
@@ -1660,6 +1659,7 @@ static void usb_mtp_write_metadata(MTPState *s)
     uint32_t next_handle = s->next_handle;
 
     assert(!s->write_pending);
+    assert(p != NULL);
 
     utf16_to_str(dataset->length, dataset->filename, filename);
 
@@ -1838,7 +1838,7 @@ static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p)
             p->status = USB_RET_STALL;
             return;
         }
-        if (s->data_out && !s->data_out->first) {
+        if ((s->data_out != NULL) && !s->data_out->first) {
             container_type = TYPE_DATA;
         } else {
             usb_packet_copy(p, &container, sizeof(container));
-- 
2.11.0

  reply	other threads:[~2018-05-03 19:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-03 19:20 [Qemu-devel] [PATCH 0/2] Minor MTP fixes Bandan
2018-05-03 19:20 ` Bandan [this message]
2018-05-03 19:20 ` [Qemu-devel] [PATCH 2/2] usb-mtp: Unconditionally check for the readonly bit Bandan

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