This is a note to let you know that I've just added the patch titled
xhci: Fix null pointer dereference if xhci initialization fails
to the 3.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xhci-fix-null-pointer-dereference-if-xhci-initialization-fails.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c207e7c50f31113c24a9f536fcab1e8a256985d7 Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Date: Thu, 11 Sep 2014 13:55:48 +0300
Subject: xhci: Fix null pointer dereference if xhci initialization fails
From: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
commit c207e7c50f31113c24a9f536fcab1e8a256985d7 upstream.
If xhci initialization fails before the roothub bandwidth
domains (xhci->rh_bw[i]) are allocated it will oops when
trying to access rh_bw members in xhci_mem_cleanup().
Reported-by: Manuel Reimer <manuel.reimer@xxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-mem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1819,7 +1819,7 @@ void xhci_mem_cleanup(struct xhci_hcd *x
xhci_cleanup_command_queue(xhci);
num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
- for (i = 0; i < num_ports; i++) {
+ for (i = 0; i < num_ports && xhci->rh_bw; i++) {
struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table;
for (j = 0; j < XHCI_MAX_INTERVAL; j++) {
struct list_head *ep = &bwt->interval_bw[j].endpoints;
Patches currently in stable-queue which might be from mathias.nyman@xxxxxxxxxxxxxxx are
queue-3.16/usb-xhci-fix-oops-in-xhci-error-handling-code.patch
queue-3.16/usb-host-xhci-fix-compliance-mode-workaround.patch
queue-3.16/xhci-fix-null-pointer-dereference-if-xhci-initialization-fails.patch
queue-3.16/xhci-fix-oops-when-xhci-resumes-from-hibernate-with-hw-lpm-capable-devices.patch
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