From: Lu Baolu <baolu.lu@linux.intel.com>
To: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Lu Baolu <baolu.lu@linux.intel.com>,
stable@vger.kernel.org
Subject: [PATCH 1/2] usb: xhci: fix wild pointers in xhci_mem_cleanup
Date: Fri, 25 Mar 2016 22:33:52 +0800 [thread overview]
Message-ID: <1458916433-2174-1-git-send-email-baolu.lu@linux.intel.com> (raw)
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
---
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 80c1de2..bad0d1f 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;
--
2.1.4
next reply other threads:[~2016-03-25 14:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-25 14:33 Lu Baolu [this message]
2016-03-25 14:33 ` [PATCH 2/2] usb: xhci: remove hardcoded gfp_t in xhci_mem_init Lu Baolu
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