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From: Gerd Hoffmann <kraxel@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Thomas Huth" <thuth@redhat.com>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Wainer dos Santos Moschetta" <wainersm@redhat.com>,
	"Willian Rampazzo" <willianr@redhat.com>,
	"Gerd Hoffmann" <kraxel@redhat.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>,
	"Alex Bennée" <alex.bennee@linaro.org>
Subject: [PULL 3/7] usbredir: fix free call
Date: Thu, 29 Jul 2021 14:50:40 +0200	[thread overview]
Message-ID: <20210729125044.3531457-4-kraxel@redhat.com> (raw)
In-Reply-To: <20210729125044.3531457-1-kraxel@redhat.com>

data might point into the middle of a larger buffer, there is a separate
free_on_destroy pointer passed into bufp_alloc() to handle that.  It is
only used in the normal workflow though, not when dropping packets due
to the queue being full.  Fix that.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/491
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210722072756.647673-1-kraxel@redhat.com>
---
 hw/usb/redirect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index 4ec9326e0582..1ec909a63a80 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -476,7 +476,7 @@ static int bufp_alloc(USBRedirDevice *dev, uint8_t *data, uint16_t len,
     if (dev->endpoint[EP2I(ep)].bufpq_dropping_packets) {
         if (dev->endpoint[EP2I(ep)].bufpq_size >
                 dev->endpoint[EP2I(ep)].bufpq_target_size) {
-            free(data);
+            free(free_on_destroy);
             return -1;
         }
         dev->endpoint[EP2I(ep)].bufpq_dropping_packets = 0;
-- 
2.31.1



  parent reply	other threads:[~2021-07-29 12:53 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29 12:50 [PULL 0/7] Usb 20210729 patches Gerd Hoffmann
2021-07-29 12:50 ` [PULL 1/7] usb-host: wire up timer for windows Gerd Hoffmann
2021-07-29 12:50 ` [PULL 2/7] ci: add libusb for windows builds Gerd Hoffmann
2021-07-29 12:50 ` Gerd Hoffmann [this message]
2021-07-29 12:50 ` [PULL 4/7] docs: Incorporate information in usb-storage.txt into rST manual Gerd Hoffmann
2021-07-29 12:50 ` [PULL 5/7] docs: Fold usb2.txt USB controller information into usb.rst Gerd Hoffmann
2021-07-29 12:50 ` [PULL 6/7] docs: Fold usb2.txt physical port addressing info " Gerd Hoffmann
2021-07-29 12:50 ` [PULL 7/7] docs: Fold usb2.txt passthrough information " Gerd Hoffmann
2021-07-30  8:14 ` [PULL 0/7] Usb 20210729 patches Peter Maydell

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