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authorLu Baolu <baolu.lu@linux.intel.com>2016-04-08 16:25:09 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-13 11:55:56 -0700
commit71504062a7c34838c3fccd92c447f399d3cb5797 (patch)
treee43b3f2eac378c3d346583a686c3d723d1ba8fde /drivers/usb/host
parent5ad3b03e4910f9f62342956ecdc758c7af6b8699 (diff)
downloadlinux-71504062a7c34838c3fccd92c447f399d3cb5797.tar.bz2
usb: xhci: fix wild pointers in xhci_mem_cleanup
This patch fixes some wild pointers produced by xhci_mem_cleanup. These wild pointers will cause system crash if xhci_mem_cleanup() is called twice. Reported-and-tested-by: Pengcheng Li <lpc.li@hisilicon.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/xhci-mem.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 80c1de239e9a..bad0d1f9a41d 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1861,6 +1861,12 @@ no_bw:
kfree(xhci->rh_bw);
kfree(xhci->ext_caps);
+ xhci->usb2_ports = NULL;
+ xhci->usb3_ports = NULL;
+ xhci->port_array = NULL;
+ xhci->rh_bw = NULL;
+ xhci->ext_caps = NULL;
+
xhci->page_size = 0;
xhci->page_shift = 0;
xhci->bus_state[0].bus_suspended = 0;