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Date: Thu, 19 May 2016 11:07:25 +0200 From: Jiri Slaby <jslaby@...e.cz> To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Lu Baolu <baolu.lu@...ux.intel.com>, Mathias Nyman <mathias.nyman@...ux.intel.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jiri Slaby <jslaby@...e.cz> Subject: [PATCH 3.12 03/76] usb: xhci: fix wild pointers in xhci_mem_cleanup From: Lu Baolu <baolu.lu@...ux.intel.com> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit 71504062a7c34838c3fccd92c447f399d3cb5797 upstream. 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@...ilicon.com> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Jiri Slaby <jslaby@...e.cz> --- drivers/usb/host/xhci-mem.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 9552d2080d12..bd889c621ba2 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1785,6 +1785,12 @@ 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; -- 2.8.2
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