Staging
v0.6.0
v0.6.0
https://github.com/torvalds/linux
Revision 677bf08cfdf9ee411c2084157f15d85edb09a81a authored by Florian Westphal on 21 November 2019, 05:56:23 UTC, committed by David S. Miller on 22 November 2019, 17:28:46 UTC
Once udp stack has set the UDP_SKB_IS_STATELESS flag, later skb free assumes all skb head state has been dropped already. This will leak the extension memory in case the skb has extensions other than the ipsec secpath, e.g. bridge nf data. To fix this, set the UDP_SKB_IS_STATELESS flag only if we don't have extensions or if the extension space can be free'd. Fixes: 895b5c9f206eb7d25dc1360a ("netfilter: drop bridge nf reset from nf_reset") Cc: Paolo Abeni <pabeni@redhat.com> Reported-by: Byron Stanoszek <gandalf@winds.org> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent ff08ddb
Tip revision: 677bf08cfdf9ee411c2084157f15d85edb09a81a authored by Florian Westphal on 21 November 2019, 05:56:23 UTC
udp: drop skb extensions before marking skb stateless
udp: drop skb extensions before marking skb stateless
Tip revision: 677bf08
gpio-amdpt.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* AMD Promontory GPIO driver
*
* Copyright (C) 2015 ASMedia Technology Inc.
* Author: YD Tseng <yd_tseng@asmedia.com.tw>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gpio/driver.h>
#include <linux/spinlock.h>
#include <linux/acpi.h>
#include <linux/platform_device.h>
#define PT_TOTAL_GPIO 8
/* PCI-E MMIO register offsets */
#define PT_DIRECTION_REG 0x00
#define PT_INPUTDATA_REG 0x04
#define PT_OUTPUTDATA_REG 0x08
#define PT_CLOCKRATE_REG 0x0C
#define PT_SYNC_REG 0x28
struct pt_gpio_chip {
struct gpio_chip gc;
void __iomem *reg_base;
};
static int pt_gpio_request(struct gpio_chip *gc, unsigned offset)
{
struct pt_gpio_chip *pt_gpio = gpiochip_get_data(gc);
unsigned long flags;
u32 using_pins;
dev_dbg(gc->parent, "pt_gpio_request offset=%x\n", offset);
spin_lock_irqsave(&gc->bgpio_lock, flags);
using_pins = readl(pt_gpio->reg_base + PT_SYNC_REG);
if (using_pins & BIT(offset)) {
dev_warn(gc->parent, "PT GPIO pin %x reconfigured\n",
offset);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
return -EINVAL;
}
writel(using_pins | BIT(offset), pt_gpio->reg_base + PT_SYNC_REG);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
return 0;
}
static void pt_gpio_free(struct gpio_chip *gc, unsigned offset)
{
struct pt_gpio_chip *pt_gpio = gpiochip_get_data(gc);
unsigned long flags;
u32 using_pins;
spin_lock_irqsave(&gc->bgpio_lock, flags);
using_pins = readl(pt_gpio->reg_base + PT_SYNC_REG);
using_pins &= ~BIT(offset);
writel(using_pins, pt_gpio->reg_base + PT_SYNC_REG);
spin_unlock_irqrestore(&gc->bgpio_lock, flags);
dev_dbg(gc->parent, "pt_gpio_free offset=%x\n", offset);
}
static int pt_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct acpi_device *acpi_dev;
acpi_handle handle = ACPI_HANDLE(dev);
struct pt_gpio_chip *pt_gpio;
int ret = 0;
if (acpi_bus_get_device(handle, &acpi_dev)) {
dev_err(dev, "PT GPIO device node not found\n");
return -ENODEV;
}
pt_gpio = devm_kzalloc(dev, sizeof(struct pt_gpio_chip), GFP_KERNEL);
if (!pt_gpio)
return -ENOMEM;
pt_gpio->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pt_gpio->reg_base)) {
dev_err(dev, "Failed to map MMIO resource for PT GPIO.\n");
return PTR_ERR(pt_gpio->reg_base);
}
ret = bgpio_init(&pt_gpio->gc, dev, 4,
pt_gpio->reg_base + PT_INPUTDATA_REG,
pt_gpio->reg_base + PT_OUTPUTDATA_REG, NULL,
pt_gpio->reg_base + PT_DIRECTION_REG, NULL,
BGPIOF_READ_OUTPUT_REG_SET);
if (ret) {
dev_err(dev, "bgpio_init failed\n");
return ret;
}
pt_gpio->gc.owner = THIS_MODULE;
pt_gpio->gc.request = pt_gpio_request;
pt_gpio->gc.free = pt_gpio_free;
pt_gpio->gc.ngpio = PT_TOTAL_GPIO;
#if defined(CONFIG_OF_GPIO)
pt_gpio->gc.of_node = dev->of_node;
#endif
ret = gpiochip_add_data(&pt_gpio->gc, pt_gpio);
if (ret) {
dev_err(dev, "Failed to register GPIO lib\n");
return ret;
}
platform_set_drvdata(pdev, pt_gpio);
/* initialize register setting */
writel(0, pt_gpio->reg_base + PT_SYNC_REG);
writel(0, pt_gpio->reg_base + PT_CLOCKRATE_REG);
dev_dbg(dev, "PT GPIO driver loaded\n");
return ret;
}
static int pt_gpio_remove(struct platform_device *pdev)
{
struct pt_gpio_chip *pt_gpio = platform_get_drvdata(pdev);
gpiochip_remove(&pt_gpio->gc);
return 0;
}
static const struct acpi_device_id pt_gpio_acpi_match[] = {
{ "AMDF030", 0 },
{ "AMDIF030", 0 },
{ },
};
MODULE_DEVICE_TABLE(acpi, pt_gpio_acpi_match);
static struct platform_driver pt_gpio_driver = {
.driver = {
.name = "pt-gpio",
.acpi_match_table = ACPI_PTR(pt_gpio_acpi_match),
},
.probe = pt_gpio_probe,
.remove = pt_gpio_remove,
};
module_platform_driver(pt_gpio_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("YD Tseng <yd_tseng@asmedia.com.tw>");
MODULE_DESCRIPTION("AMD Promontory GPIO Driver");
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...