Lothar Waßmann <LW@xxxxxxxxxxxxxxxxxxx> writes: > The pointer to a platform_device struct must not be dereferenced after > the device has been unregistered. > > This bug produces a crash when unloading the ci13xxx kernel module > compiled with CONFIG_PAGE_POISONING enabled. > > Signed-off-by: Lothar Waßmann <LW@xxxxxxxxxxxxxxxxxxx> Good one, thanks. Acked-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Greg, this is -stable material, applicable starting from v3.6. > --- > drivers/usb/chipidea/core.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) > > diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c > index f69d029..b726c49 100644 > --- a/drivers/usb/chipidea/core.c > +++ b/drivers/usb/chipidea/core.c > @@ -385,8 +385,9 @@ EXPORT_SYMBOL_GPL(ci13xxx_add_device); > > void ci13xxx_remove_device(struct platform_device *pdev) > { > + int id = pdev->id; > platform_device_unregister(pdev); > - ida_simple_remove(&ci_ida, pdev->id); > + ida_simple_remove(&ci_ida, id); > } > EXPORT_SYMBOL_GPL(ci13xxx_remove_device); > > -- > 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html