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| Started by | Ben Hutchings <ben@decadent.org.uk> |
|---|---|
| First post | 2016-06-13 21:10 +0200 |
| Last post | 2016-06-13 21:10 +0200 |
| Articles | 1 — 1 participant |
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[PATCH 3.16 021/114] usb: xhci: fix wild pointers in xhci_mem_cleanup Ben Hutchings <ben@decadent.org.uk> - 2016-06-13 21:10 +0200
| From | Ben Hutchings <ben@decadent.org.uk> |
|---|---|
| Date | 2016-06-13 21:10 +0200 |
| Subject | [PATCH 3.16 021/114] usb: xhci: fix wild pointers in xhci_mem_cleanup |
| Message-ID | <rJFpg-22H-17@gated-at.bofh.it> |
3.16.36-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Lu Baolu <baolu.lu@linux.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@hisilicon.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/usb/host/xhci-mem.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1882,6 +1882,12 @@ 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;
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