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Message-Id: <1465122046-9645-84-git-send-email-w@1wt.eu> Date: Sun, 5 Jun 2016 12:19:46 +0200 From: Willy Tarreau <w@....eu> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Lu Baolu <baolu.lu@...ux.intel.com>, Mathias Nyman <mathias.nyman@...ux.intel.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Willy Tarreau <w@....eu> Subject: [PATCH 3.10 083/143] usb: xhci: fix wild pointers in xhci_mem_cleanup From: Lu Baolu <baolu.lu@...ux.intel.com> 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> [wt: struct xhci_hcd has no ext_caps members in 3.10 ] Signed-off-by: Willy Tarreau <w@....eu> --- drivers/usb/host/xhci-mem.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 87e82e6..af9e4e8 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1861,6 +1861,11 @@ no_bw: kfree(xhci->port_array); kfree(xhci->rh_bw); + xhci->usb2_ports = NULL; + xhci->usb3_ports = NULL; + xhci->port_array = NULL; + xhci->rh_bw = NULL; + xhci->page_size = 0; xhci->page_shift = 0; xhci->bus_state[0].bus_suspended = 0; -- 2.8.0.rc2.1.gbe9624a
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