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usb: ehci: fix memory leak in ehci_init_transfer 

In ehci_init_transfer function, if the 'cpage' is bigger than 4,
it doesn't free the 'p->sgl' once allocated previously thus leading
a memory leak issue. This patch avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 5821c0f4.091c6b0a.e0c92.e811@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Li Qiang 2016-11-08 04:11:10 -08:00 committed by Stefan Hajnoczi
parent 423f7cf233
commit 791f97758e
1 changed files with 1 additions and 0 deletions
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1
hw/usb/hcd-ehci.c
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@ -1190,6 +1190,7 @@ static int ehci_init_transfer(EHCIPacket *p)
while (bytes > 0) {
if (cpage > 4) {
fprintf(stderr, "cpage out of range (%d)\n", cpage);
qemu_sglist_destroy(&p->sgl);
return -1;
}