Re: Linux 4.9.13
From: Greg KH
Date: Sun Feb 26 2017 - 06:42:40 EST
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 922dec8fa07e..65b05ba6ef98 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1391,6 +1391,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
When zero, profiling data is discarded and associated
debugfs files are removed at module unload time.
+ goldfish [X86] Enable the goldfish android emulator platform.
+ Don't use this when you are not running on the
+ android emulator
+
gpt [EFI] Forces disk with valid GPT signature but
invalid Protective MBR to be treated as GPT. If the
primary GPT is corrupted, it enables the backup/alternate
diff --git a/Makefile b/Makefile
index 3cd6f6fb4f20..14dc2758345b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 12
+SUBLEVEL = 13
EXTRAVERSION =
NAME = Roaring Lionus
diff --git a/arch/x86/platform/goldfish/goldfish.c b/arch/x86/platform/goldfish/goldfish.c
index 1693107a518e..0d17c0aafeb1 100644
--- a/arch/x86/platform/goldfish/goldfish.c
+++ b/arch/x86/platform/goldfish/goldfish.c
@@ -42,10 +42,22 @@ static struct resource goldfish_pdev_bus_resources[] = {
}
};
+static bool goldfish_enable __initdata;
+
+static int __init goldfish_setup(char *str)
+{
+ goldfish_enable = true;
+ return 0;
+}
+__setup("goldfish", goldfish_setup);
+
static int __init goldfish_init(void)
{
+ if (!goldfish_enable)
+ return -ENODEV;
+
platform_device_register_simple("goldfish_pdev_bus", -1,
- goldfish_pdev_bus_resources, 2);
+ goldfish_pdev_bus_resources, 2);
return 0;
}
device_initcall(goldfish_init);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 6bb21b31cfeb..a543ea676de3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -567,10 +567,14 @@ int mlx5e_stats_flower(struct mlx5e_priv *priv,
mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
+ preempt_disable();
+
tcf_exts_to_list(f->exts, &actions);
list_for_each_entry(a, &actions, list)
tcf_action_stats_update(a, bytes, packets, lastuse);
+ preempt_enable();
+
return 0;
}
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index b9087b828eff..3f1971d485f3 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -2925,7 +2925,7 @@ static int cpsw_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct net_device *ndev = platform_get_drvdata(pdev);
- struct cpsw_common *cpsw = netdev_priv(ndev);
+ struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
/* Select default pin state */
pinctrl_pm_select_default_state(dev);
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 0fafaa9d903b..d4f495b41bd4 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2449,7 +2449,8 @@ static int vxlan_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
return -EINVAL;
rt = vxlan_get_route(vxlan, skb, 0, info->key.tos,
info->key.u.ipv4.dst,
- &info->key.u.ipv4.src, NULL, info);
+ &info->key.u.ipv4.src,
+ &info->dst_cache, info);
if (IS_ERR(rt))
return PTR_ERR(rt);
ip_rt_put(rt);
@@ -2459,7 +2460,8 @@ static int vxlan_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
ndst = vxlan6_get_route(vxlan, skb, 0, info->key.tos,
info->key.label, &info->key.u.ipv6.dst,
- &info->key.u.ipv6.src, NULL, info);
+ &info->key.u.ipv6.src,
+ &info->dst_cache, info);
if (IS_ERR(ndst))
return PTR_ERR(ndst);
dst_release(ndst);
diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 3837bbdecf05..ae0c48f3c2bc 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -831,12 +831,30 @@ static void rtl_usb_stop(struct ieee80211_hw *hw)
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
+ struct urb *urb;
/* should after adapter start and interrupt enable. */
set_hal_stop(rtlhal);
cancel_work_sync(&rtlpriv->works.fill_h2c_cmd);
/* Enable software */
SET_USB_STOP(rtlusb);
+
+ /* free pre-allocated URBs from rtl_usb_start() */
+ usb_kill_anchored_urbs(&rtlusb->rx_submitted);
+
+ tasklet_kill(&rtlusb->rx_work_tasklet);
+ cancel_work_sync(&rtlpriv->works.lps_change_work);
+
+ flush_workqueue(rtlpriv->works.rtl_wq);
+
+ skb_queue_purge(&rtlusb->rx_queue);
+
+ while ((urb = usb_get_from_anchor(&rtlusb->rx_cleanup_urbs))) {
+ usb_free_coherent(urb->dev, urb->transfer_buffer_length,
+ urb->transfer_buffer, urb->transfer_dma);
+ usb_free_urb(urb);
+ }
+
rtlpriv->cfg->ops->hw_disable(hw);
}
diff --git a/drivers/platform/goldfish/pdev_bus.c b/drivers/platform/goldfish/pdev_bus.c
index 1f52462f4cdd..dd9ea463c2a4 100644
--- a/drivers/platform/goldfish/pdev_bus.c
+++ b/drivers/platform/goldfish/pdev_bus.c
@@ -157,23 +157,26 @@ static int goldfish_new_pdev(void)
static irqreturn_t goldfish_pdev_bus_interrupt(int irq, void *dev_id)
{
irqreturn_t ret = IRQ_NONE;
+
while (1) {
u32 op = readl(pdev_bus_base + PDEV_BUS_OP);
- switch (op) {
- case PDEV_BUS_OP_DONE:
- return IRQ_NONE;
+ switch (op) {
case PDEV_BUS_OP_REMOVE_DEV:
goldfish_pdev_remove();
+ ret = IRQ_HANDLED;
break;
case PDEV_BUS_OP_ADD_DEV:
goldfish_new_pdev();
+ ret = IRQ_HANDLED;
break;
+
+ case PDEV_BUS_OP_DONE:
+ default:
+ return ret;
}
- ret = IRQ_HANDLED;
}
- return ret;
}
static int goldfish_pdev_bus_probe(struct platform_device *pdev)
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 7312e7e01b7e..6788e7532dff 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -1809,6 +1809,7 @@ static const struct of_device_id msm_match_table[] = {
{ .compatible = "qcom,msm-uartdm" },
{}
};
+MODULE_DEVICE_TABLE(of, msm_match_table);
static struct platform_driver msm_platform_driver = {
.remove = msm_serial_remove,
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index 1532cde8a437..7812052dc700 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -99,10 +99,17 @@ static int ark3116_read_reg(struct usb_serial *serial,
usb_rcvctrlpipe(serial->dev, 0),
0xfe, 0xc0, 0, reg,
buf, 1, ARK_TIMEOUT);
- if (result < 0)
+ if (result < 1) {
+ dev_err(&serial->interface->dev,
+ "failed to read register %u: %d\n",
+ reg, result);
+ if (result >= 0)
+ result = -EIO;
+
return result;
- else
- return buf[0];
+ }
+
+ return buf[0];
}
static inline int calc_divisor(int bps)
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index 8967715fe6fc..b6f1adefb758 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -143,6 +143,7 @@ static int usb_console_setup(struct console *co, char *options)
tty->driver = usb_serial_tty_driver;
tty->index = co->index;
init_ldsem(&tty->ldisc_sem);
+ spin_lock_init(&tty->files_lock);
INIT_LIST_HEAD(&tty->tty_files);
kref_get(&tty->driver->kref);
__module_get(tty->driver->owner);
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 243ac5ebe46a..8bb48751028c 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -172,6 +172,8 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x1901, 0x0190) }, /* GE B850 CP2105 Recorder interface */
{ USB_DEVICE(0x1901, 0x0193) }, /* GE B650 CP2104 PMC interface */
{ USB_DEVICE(0x1901, 0x0194) }, /* GE Healthcare Remote Alarm Box */
+ { USB_DEVICE(0x1901, 0x0195) }, /* GE B850/B650/B450 CP2104 DP UART interface */
+ { USB_DEVICE(0x1901, 0x0196) }, /* GE B850 CP2105 DP UART interface */
{ USB_DEVICE(0x19CF, 0x3000) }, /* Parrot NMEA GPS Flight Recorder */
{ USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */
{ USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 6e9fc8bcc285..99a0a5f1b400 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1807,8 +1807,6 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
mutex_init(&priv->cfg_lock);
- priv->flags = ASYNC_LOW_LATENCY;
-
if (quirk && quirk->port_probe)
quirk->port_probe(priv);
@@ -2072,6 +2070,20 @@ static int ftdi_process_packet(struct usb_serial_port *port,
priv->prev_status = status;
}
+ /* save if the transmitter is empty or not */
+ if (packet[1] & FTDI_RS_TEMT)
+ priv->transmit_empty = 1;
+ else
+ priv->transmit_empty = 0;
+
+ len -= 2;
+ if (!len)
+ return 0; /* status only */
+
+ /*
+ * Break and error status must only be processed for packets with
+ * data payload to avoid over-reporting.
+ */
flag = TTY_NORMAL;
if (packet[1] & FTDI_RS_ERR_MASK) {
/* Break takes precedence over parity, which takes precedence
@@ -2094,15 +2106,6 @@ static int ftdi_process_packet(struct usb_serial_port *port,
}
}
- /* save if the transmitter is empty or not */
- if (packet[1] & FTDI_RS_TEMT)
- priv->transmit_empty = 1;
- else
- priv->transmit_empty = 0;
-
- len -= 2;
- if (!len)
- return 0; /* status only */
port->icount.rx += len;
ch = packet + 2;
@@ -2433,8 +2436,12 @@ static int ftdi_get_modem_status(struct usb_serial_port *port,
FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
0, priv->interface,
buf, len, WDR_TIMEOUT);
- if (ret < 0) {
+
+ /* NOTE: We allow short responses and handle that below. */
+ if (ret < 1) {
dev_err(&port->dev, "failed to get modem status: %d\n", ret);
+ if (ret >= 0)
+ ret = -EIO;
ret = usb_translate_errors(ret);
goto out;
}
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 4f9af47e6a29..5c4fc3abf6a7 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1024,6 +1024,7 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port)
* (can't set it up in mos7840_startup as the structures *
* were not set up at that time.) */
if (port0->open_ports == 1) {
+ /* FIXME: Buffer never NULL, so URB is not submitted. */
if (serial->port[0]->interrupt_in_buffer == NULL) {
/* set up interrupt urb */
usb_fill_int_urb(serial->port[0]->interrupt_in_urb,
@@ -2119,7 +2120,8 @@ static int mos7840_calc_num_ports(struct usb_serial *serial)
static int mos7840_attach(struct usb_serial *serial)
{
if (serial->num_bulk_in < serial->num_ports ||
- serial->num_bulk_out < serial->num_ports) {
+ serial->num_bulk_out < serial->num_ports ||
+ serial->num_interrupt_in < 1) {
dev_err(&serial->interface->dev, "missing endpoints\n");
return -ENODEV;
}
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 4b7bfb394a32..64bf258e7e00 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -142,7 +142,7 @@ static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port)
usb_clear_halt(port->serial->dev, port->read_urb->pipe);
res = usb_serial_generic_open(tty, port);
- if (!res)
+ if (res)
return res;
/* Request CTS line state, sometimes during opening the current
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
index 475e6c31b266..ddfd787c461c 100644
--- a/drivers/usb/serial/spcp8x5.c
+++ b/drivers/usb/serial/spcp8x5.c
@@ -232,11 +232,17 @@ static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status)
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
GET_UART_STATUS, GET_UART_STATUS_TYPE,
0, GET_UART_STATUS_MSR, buf, 1, 100);
- if (ret < 0)
+ if (ret < 1) {
dev_err(&port->dev, "failed to get modem status: %d\n", ret);
+ if (ret >= 0)
+ ret = -EIO;
+ goto out;
+ }
dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf);
*status = *buf;
+ ret = 0;
+out:
kfree(buf);
return ret;
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index cdc6bdd495be..e8889614cec3 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -1068,7 +1068,15 @@ xfs_file_iomap_end_delalloc(
xfs_fileoff_t end_fsb;
int error = 0;
- start_fsb = XFS_B_TO_FSB(mp, offset + written);
+ /*
+ * start_fsb refers to the first unused block after a short write. If
+ * nothing was written, round offset down to point at the first block in
+ * the range.
+ */
+ if (unlikely(!written))
+ start_fsb = XFS_B_TO_FSBT(mp, offset);
+ else
+ start_fsb = XFS_B_TO_FSB(mp, offset + written);
end_fsb = XFS_B_TO_FSB(mp, offset + length);
/*
@@ -1080,6 +1088,9 @@ xfs_file_iomap_end_delalloc(
* blocks in the range, they are ours.
*/
if (start_fsb < end_fsb) {
+ truncate_pagecache_range(VFS_I(ip), XFS_FSB_TO_B(mp, start_fsb),
+ XFS_FSB_TO_B(mp, end_fsb) - 1);
+
xfs_ilock(ip, XFS_ILOCK_EXCL);
error = xfs_bmap_punch_delalloc_range(ip, start_fsb,
end_fsb - start_fsb);
diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
index 34cce729109c..fca15390a42c 100644
--- a/include/acpi/platform/acenv.h
+++ b/include/acpi/platform/acenv.h
@@ -177,7 +177,7 @@
#include "acmsvc.h"
#elif defined(__INTEL_COMPILER)
-#include "acintel.h"
+#include <acpi/platform/acintel.h>
#endif
diff --git a/include/acpi/platform/acintel.h b/include/acpi/platform/acintel.h
new file mode 100644
index 000000000000..17bd3b7b4e5a
--- /dev/null
+++ b/include/acpi/platform/acintel.h
@@ -0,0 +1,87 @@
+/******************************************************************************
+ *
+ * Name: acintel.h - VC specific defines, etc.
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2017, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#ifndef __ACINTEL_H__
+#define __ACINTEL_H__
+
+/*
+ * Use compiler specific <stdarg.h> is a good practice for even when
+ * -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
+ */
+#include <stdarg.h>
+
+/* Configuration specific to Intel 64-bit C compiler */
+
+#define COMPILER_DEPENDENT_INT64 __int64
+#define COMPILER_DEPENDENT_UINT64 unsigned __int64
+#define ACPI_INLINE __inline
+
+/*
+ * Calling conventions:
+ *
+ * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
+ * ACPI_EXTERNAL_XFACE - External ACPI interfaces
+ * ACPI_INTERNAL_XFACE - Internal ACPI interfaces
+ * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
+ */
+#define ACPI_SYSTEM_XFACE
+#define ACPI_EXTERNAL_XFACE
+#define ACPI_INTERNAL_XFACE
+#define ACPI_INTERNAL_VAR_XFACE
+
+/* remark 981 - operands evaluated in no particular order */
+#pragma warning(disable:981)
+
+/* warn C4100: unreferenced formal parameter */
+#pragma warning(disable:4100)
+
+/* warn C4127: conditional expression is constant */
+#pragma warning(disable:4127)
+
+/* warn C4706: assignment within conditional expression */
+#pragma warning(disable:4706)
+
+/* warn C4214: bit field types other than int */
+#pragma warning(disable:4214)
+
+#endif /* __ACINTEL_H__ */
diff --git a/include/linux/ptr_ring.h b/include/linux/ptr_ring.h
index 2052011bf9fb..6c70444da3b9 100644
--- a/include/linux/ptr_ring.h
+++ b/include/linux/ptr_ring.h
@@ -111,6 +111,11 @@ static inline int __ptr_ring_produce(struct ptr_ring *r, void *ptr)
return 0;
}
+/*
+ * Note: resize (below) nests producer lock within consumer lock, so if you
+ * consume in interrupt or BH context, you must disable interrupts/BH when
+ * calling this.
+ */
static inline int ptr_ring_produce(struct ptr_ring *r, void *ptr)
{
int ret;
@@ -242,6 +247,11 @@ static inline void *__ptr_ring_consume(struct ptr_ring *r)
return ptr;
}
+/*
+ * Note: resize (below) nests producer lock within consumer lock, so if you
+ * call this in interrupt or BH context, you must disable interrupts/BH when
+ * producing.
+ */
static inline void *ptr_ring_consume(struct ptr_ring *r)
{
void *ptr;
@@ -357,7 +367,7 @@ static inline void **__ptr_ring_swap_queue(struct ptr_ring *r, void **queue,
void **old;
void *ptr;
- while ((ptr = ptr_ring_consume(r)))
+ while ((ptr = __ptr_ring_consume(r)))
if (producer < size)
queue[producer++] = ptr;
else if (destroy)
@@ -372,6 +382,12 @@ static inline void **__ptr_ring_swap_queue(struct ptr_ring *r, void **queue,
return old;
}
+/*
+ * Note: producer lock is nested within consumer lock, so if you
+ * resize you must make sure all uses nest correctly.
+ * In particular if you consume ring in interrupt or BH context, you must
+ * disable interrupts/BH when doing so.
+ */
static inline int ptr_ring_resize(struct ptr_ring *r, int size, gfp_t gfp,
void (*destroy)(void *))
{
@@ -382,17 +398,25 @@ static inline int ptr_ring_resize(struct ptr_ring *r, int size, gfp_t gfp,
if (!queue)
return -ENOMEM;
- spin_lock_irqsave(&(r)->producer_lock, flags);
+ spin_lock_irqsave(&(r)->consumer_lock, flags);
+ spin_lock(&(r)->producer_lock);
old = __ptr_ring_swap_queue(r, queue, size, gfp, destroy);
- spin_unlock_irqrestore(&(r)->producer_lock, flags);
+ spin_unlock(&(r)->producer_lock);
+ spin_unlock_irqrestore(&(r)->consumer_lock, flags);
kfree(old);
return 0;
}
+/*
+ * Note: producer lock is nested within consumer lock, so if you
+ * resize you must make sure all uses nest correctly.
+ * In particular if you consume ring in interrupt or BH context, you must
+ * disable interrupts/BH when doing so.
+ */
static inline int ptr_ring_resize_multiple(struct ptr_ring **rings, int nrings,
int size,
gfp_t gfp, void (*destroy)(void *))
@@ -412,10 +436,12 @@ static inline int ptr_ring_resize_multiple(struct ptr_ring **rings, int nrings,
}
for (i = 0; i < nrings; ++i) {
- spin_lock_irqsave(&(rings[i])->producer_lock, flags);
+ spin_lock_irqsave(&(rings[i])->consumer_lock, flags);
+ spin_lock(&(rings[i])->producer_lock);
queues[i] = __ptr_ring_swap_queue(rings[i], queues[i],
size, gfp, destroy);
- spin_unlock_irqrestore(&(rings[i])->producer_lock, flags);
+ spin_unlock(&(rings[i])->producer_lock);
+ spin_unlock_irqrestore(&(rings[i])->consumer_lock, flags);
}
for (i = 0; i < nrings; ++i)
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 8fde443f36d7..6ff2d7744223 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -757,15 +757,20 @@ static int cgwb_bdi_init(struct backing_dev_info *bdi)
if (!bdi->wb_congested)
return -ENOMEM;
+ atomic_set(&bdi->wb_congested->refcnt, 1);
+
err = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL);
if (err) {
- kfree(bdi->wb_congested);
+ wb_congested_put(bdi->wb_congested);
return err;
}
return 0;
}
-static void cgwb_bdi_destroy(struct backing_dev_info *bdi) { }
+static void cgwb_bdi_destroy(struct backing_dev_info *bdi)
+{
+ wb_congested_put(bdi->wb_congested);
+}
#endif /* CONFIG_CGROUP_WRITEBACK */
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 2ae929f9bd06..9901e5b75a05 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2927,7 +2927,8 @@ static void neigh_proc_update(struct ctl_table *ctl, int write)
return;
set_bit(index, p->data_state);
- call_netevent_notifiers(NETEVENT_DELAY_PROBE_TIME_UPDATE, p);
+ if (index == NEIGH_VAR_DELAY_PROBE_TIME)
+ call_netevent_notifiers(NETEVENT_DELAY_PROBE_TIME_UPDATE, p);
if (!dev) /* NULL dev means this is default value */
neigh_copy_dflt_parms(net, p, index);
}
diff --git a/net/dccp/input.c b/net/dccp/input.c
index ba347184bda9..8fedc2d49770 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -606,7 +606,8 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
if (inet_csk(sk)->icsk_af_ops->conn_request(sk,
skb) < 0)
return 1;
- goto discard;
+ consume_skb(skb);
+ return 0;
}
if (dh->dccph_type == DCCP_PKT_RESET)
goto discard;
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 65336f38a5d8..9826695ddfc6 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -105,10 +105,10 @@ static void ip_cmsg_recv_checksum(struct msghdr *msg, struct sk_buff *skb,
if (skb->ip_summed != CHECKSUM_COMPLETE)
return;
- if (offset != 0)
- csum = csum_sub(csum,
- csum_partial(skb_transport_header(skb) + tlen,
- offset, 0));
+ if (offset != 0) {
+ int tend_off = skb_transport_offset(skb) + tlen;
+ csum = csum_sub(csum, skb_checksum(skb, tend_off, offset, 0));
+ }
put_cmsg(msg, SOL_IP, IP_CHECKSUM, sizeof(__wsum), &csum);
}
diff --git a/net/irda/irqueue.c b/net/irda/irqueue.c
index acbe61c7e683..160dc89335e2 100644
--- a/net/irda/irqueue.c
+++ b/net/irda/irqueue.c
@@ -383,9 +383,6 @@ EXPORT_SYMBOL(hashbin_new);
* for deallocating this structure if it's complex. If not the user can
* just supply kfree, which should take care of the job.
*/
-#ifdef CONFIG_LOCKDEP
-static int hashbin_lock_depth = 0;
-#endif
int hashbin_delete( hashbin_t* hashbin, FREE_FUNC free_func)
{
irda_queue_t* queue;
@@ -396,22 +393,27 @@ int hashbin_delete( hashbin_t* hashbin, FREE_FUNC free_func)
IRDA_ASSERT(hashbin->magic == HB_MAGIC, return -1;);
/* Synchronize */
- if ( hashbin->hb_type & HB_LOCK ) {
- spin_lock_irqsave_nested(&hashbin->hb_spinlock, flags,
- hashbin_lock_depth++);
- }
+ if (hashbin->hb_type & HB_LOCK)
+ spin_lock_irqsave(&hashbin->hb_spinlock, flags);
/*
* Free the entries in the hashbin, TODO: use hashbin_clear when
* it has been shown to work
*/
for (i = 0; i < HASHBIN_SIZE; i ++ ) {
- queue = dequeue_first((irda_queue_t**) &hashbin->hb_queue[i]);
- while (queue ) {
- if (free_func)
- (*free_func)(queue);
- queue = dequeue_first(
- (irda_queue_t**) &hashbin->hb_queue[i]);
+ while (1) {
+ queue = dequeue_first((irda_queue_t**) &hashbin->hb_queue[i]);
+
+ if (!queue)
+ break;
+
+ if (free_func) {
+ if (hashbin->hb_type & HB_LOCK)
+ spin_unlock_irqrestore(&hashbin->hb_spinlock, flags);
+ free_func(queue);
+ if (hashbin->hb_type & HB_LOCK)
+ spin_lock_irqsave(&hashbin->hb_spinlock, flags);
+ }
}
}
@@ -420,12 +422,8 @@ int hashbin_delete( hashbin_t* hashbin, FREE_FUNC free_func)
hashbin->magic = ~HB_MAGIC;
/* Release lock */
- if ( hashbin->hb_type & HB_LOCK) {
+ if (hashbin->hb_type & HB_LOCK)
spin_unlock_irqrestore(&hashbin->hb_spinlock, flags);
-#ifdef CONFIG_LOCKDEP
- hashbin_lock_depth--;
-#endif
- }
/*
* Free the hashbin structure
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index 7e08a4d3d77d..a646f3481240 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -929,23 +929,25 @@ static int kcm_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
goto out_error;
}
- /* New message, alloc head skb */
- head = alloc_skb(0, sk->sk_allocation);
- while (!head) {
- kcm_push(kcm);
- err = sk_stream_wait_memory(sk, &timeo);
- if (err)
- goto out_error;
-
+ if (msg_data_left(msg)) {
+ /* New message, alloc head skb */
head = alloc_skb(0, sk->sk_allocation);
- }
+ while (!head) {
+ kcm_push(kcm);
+ err = sk_stream_wait_memory(sk, &timeo);
+ if (err)
+ goto out_error;
- skb = head;
+ head = alloc_skb(0, sk->sk_allocation);
+ }
- /* Set ip_summed to CHECKSUM_UNNECESSARY to avoid calling
- * csum_and_copy_from_iter from skb_do_copy_data_nocache.
- */
- skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb = head;
+
+ /* Set ip_summed to CHECKSUM_UNNECESSARY to avoid calling
+ * csum_and_copy_from_iter from skb_do_copy_data_nocache.
+ */
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ }
start:
while (msg_data_left(msg)) {
@@ -1018,10 +1020,12 @@ static int kcm_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
if (eor) {
bool not_busy = skb_queue_empty(&sk->sk_write_queue);
- /* Message complete, queue it on send buffer */
- __skb_queue_tail(&sk->sk_write_queue, head);
- kcm->seq_skb = NULL;
- KCM_STATS_INCR(kcm->stats.tx_msgs);
+ if (head) {
+ /* Message complete, queue it on send buffer */
+ __skb_queue_tail(&sk->sk_write_queue, head);
+ kcm->seq_skb = NULL;
+ KCM_STATS_INCR(kcm->stats.tx_msgs);
+ }
if (msg->msg_flags & MSG_BATCH) {
kcm->tx_wait_more = true;
@@ -1040,8 +1044,10 @@ static int kcm_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
} else {
/* Message not complete, save state */
partial_message:
- kcm->seq_skb = head;
- kcm_tx_msg(head)->last_skb = skb;
+ if (head) {
+ kcm->seq_skb = head;
+ kcm_tx_msg(head)->last_skb = skb;
+ }
}
KCM_STATS_ADD(kcm->stats.tx_bytes, copied);
diff --git a/net/llc/llc_conn.c b/net/llc/llc_conn.c
index 3e821daf9dd4..8bc5a1bd2d45 100644
--- a/net/llc/llc_conn.c
+++ b/net/llc/llc_conn.c
@@ -821,7 +821,10 @@ void llc_conn_handler(struct llc_sap *sap, struct sk_buff *skb)
* another trick required to cope with how the PROCOM state
* machine works. -acme
*/
+ skb_orphan(skb);
+ sock_hold(sk);
skb->sk = sk;
+ skb->destructor = sock_efree;
}
if (!sock_owned_by_user(sk))
llc_conn_rcv(sk, skb);
diff --git a/net/llc/llc_sap.c b/net/llc/llc_sap.c
index d0e1e804ebd7..5404d0d195cc 100644
--- a/net/llc/llc_sap.c
+++ b/net/llc/llc_sap.c
@@ -290,7 +290,10 @@ static void llc_sap_rcv(struct llc_sap *sap, struct sk_buff *skb,
ev->type = LLC_SAP_EV_TYPE_PDU;
ev->reason = 0;
+ skb_orphan(skb);
+ sock_hold(sk);
skb->sk = sk;
+ skb->destructor = sock_efree;
llc_sap_state_process(sap, skb);
}
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 7341adf7059d..6dc44d9b4190 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -188,6 +188,26 @@ nf_ct_helper_ext_add(struct nf_conn *ct,
}
EXPORT_SYMBOL_GPL(nf_ct_helper_ext_add);
+static struct nf_conntrack_helper *
+nf_ct_lookup_helper(struct nf_conn *ct, struct net *net)
+{
+ if (!net->ct.sysctl_auto_assign_helper) {
+ if (net->ct.auto_assign_helper_warned)
+ return NULL;
+ if (!__nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple))
+ return NULL;
+ pr_info("nf_conntrack: default automatic helper assignment "
+ "has been turned off for security reasons and CT-based "
+ " firewall rule not found. Use the iptables CT target "
+ "to attach helpers instead.\n");
+ net->ct.auto_assign_helper_warned = 1;
+ return NULL;
+ }
+
+ return __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
+}
+
+
int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
gfp_t flags)
{
@@ -213,21 +233,14 @@ int __nf_ct_try_assign_helper(struct nf_conn *ct, struct nf_conn *tmpl,
}
help = nfct_help(ct);
- if (net->ct.sysctl_auto_assign_helper && helper == NULL) {
- helper = __nf_ct_helper_find(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
- if (unlikely(!net->ct.auto_assign_helper_warned && helper)) {
- pr_info("nf_conntrack: automatic helper "
- "assignment is deprecated and it will "
- "be removed soon. Use the iptables CT target "
- "to attach helpers instead.\n");
- net->ct.auto_assign_helper_warned = true;
- }
- }
if (helper == NULL) {
- if (help)
- RCU_INIT_POINTER(help->helper, NULL);
- return 0;
+ helper = nf_ct_lookup_helper(ct, net);
+ if (helper == NULL) {
+ if (help)
+ RCU_INIT_POINTER(help->helper, NULL);
+ return 0;
+ }
}
if (help == NULL) {
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 458722b938c7..34de326b4f09 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1497,6 +1497,8 @@ static void __fanout_link(struct sock *sk, struct packet_sock *po)
f->arr[f->num_members] = sk;
smp_wmb();
f->num_members++;
+ if (f->num_members == 1)
+ dev_add_pack(&f->prot_hook);
spin_unlock(&f->lock);
}
@@ -1513,6 +1515,8 @@ static void __fanout_unlink(struct sock *sk, struct packet_sock *po)
BUG_ON(i >= f->num_members);
f->arr[i] = f->arr[f->num_members - 1];
f->num_members--;
+ if (f->num_members == 0)
+ __dev_remove_pack(&f->prot_hook);
spin_unlock(&f->lock);
}
@@ -1619,6 +1623,7 @@ static void fanout_release_data(struct packet_fanout *f)
static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
{
+ struct packet_rollover *rollover = NULL;
struct packet_sock *po = pkt_sk(sk);
struct packet_fanout *f, *match;
u8 type = type_flags & 0xff;
@@ -1641,23 +1646,28 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
return -EINVAL;
}
+ mutex_lock(&fanout_mutex);
+
+ err = -EINVAL;
if (!po->running)
- return -EINVAL;
+ goto out;
+ err = -EALREADY;
if (po->fanout)
- return -EALREADY;
+ goto out;
if (type == PACKET_FANOUT_ROLLOVER ||
(type_flags & PACKET_FANOUT_FLAG_ROLLOVER)) {
- po->rollover = kzalloc(sizeof(*po->rollover), GFP_KERNEL);
- if (!po->rollover)
- return -ENOMEM;
- atomic_long_set(&po->rollover->num, 0);
- atomic_long_set(&po->rollover->num_huge, 0);
- atomic_long_set(&po->rollover->num_failed, 0);
+ err = -ENOMEM;
+ rollover = kzalloc(sizeof(*rollover), GFP_KERNEL);
+ if (!rollover)
+ goto out;
+ atomic_long_set(&rollover->num, 0);
+ atomic_long_set(&rollover->num_huge, 0);
+ atomic_long_set(&rollover->num_failed, 0);
+ po->rollover = rollover;
}
- mutex_lock(&fanout_mutex);
match = NULL;
list_for_each_entry(f, &fanout_list, list) {
if (f->id == id &&
@@ -1687,7 +1697,6 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
match->prot_hook.func = packet_rcv_fanout;
match->prot_hook.af_packet_priv = match;
match->prot_hook.id_match = match_fanout_group;
- dev_add_pack(&match->prot_hook);
list_add(&match->list, &fanout_list);
}
err = -EINVAL;
@@ -1704,36 +1713,40 @@ static int fanout_add(struct sock *sk, u16 id, u16 type_flags)
}
}
out:
- mutex_unlock(&fanout_mutex);
- if (err) {
- kfree(po->rollover);
+ if (err && rollover) {
+ kfree(rollover);
po->rollover = NULL;
}
+ mutex_unlock(&fanout_mutex);
return err;
}
-static void fanout_release(struct sock *sk)
+/* If pkt_sk(sk)->fanout->sk_ref is zero, this function removes
+ * pkt_sk(sk)->fanout from fanout_list and returns pkt_sk(sk)->fanout.
+ * It is the responsibility of the caller to call fanout_release_data() and
+ * free the returned packet_fanout (after synchronize_net())
+ */
+static struct packet_fanout *fanout_release(struct sock *sk)
{
struct packet_sock *po = pkt_sk(sk);
struct packet_fanout *f;
+ mutex_lock(&fanout_mutex);
f = po->fanout;
- if (!f)
- return;
+ if (f) {
+ po->fanout = NULL;
- mutex_lock(&fanout_mutex);
- po->fanout = NULL;
+ if (atomic_dec_and_test(&f->sk_ref))
+ list_del(&f->list);
+ else
+ f = NULL;
- if (atomic_dec_and_test(&f->sk_ref)) {
- list_del(&f->list);
- dev_remove_pack(&f->prot_hook);
- fanout_release_data(f);
- kfree(f);
+ if (po->rollover)
+ kfree_rcu(po->rollover, rcu);
}
mutex_unlock(&fanout_mutex);
- if (po->rollover)
- kfree_rcu(po->rollover, rcu);
+ return f;
}
static bool packet_extra_vlan_len_allowed(const struct net_device *dev,
@@ -2965,6 +2978,7 @@ static int packet_release(struct socket *sock)
{
struct sock *sk = sock->sk;
struct packet_sock *po;
+ struct packet_fanout *f;
struct net *net;
union tpacket_req_u req_u;
@@ -3004,9 +3018,14 @@ static int packet_release(struct socket *sock)
packet_set_ring(sk, &req_u, 1, 1);
}
- fanout_release(sk);
+ f = fanout_release(sk);
synchronize_net();
+
+ if (f) {
+ fanout_release_data(f);
+ kfree(f);
+ }
/*
* Now the socket is dead. No more input will appear.
*/
@@ -3958,7 +3977,6 @@ static int packet_notifier(struct notifier_block *this,
}
if (msg == NETDEV_UNREGISTER) {
packet_cached_dev_reset(po);
- fanout_release(sk);
po->ifindex = -1;
if (po->prot_hook.dev)
dev_put(po->prot_hook.dev);
diff --git a/net/socket.c b/net/socket.c
index 73dc69f9681e..6bbccf05854f 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2197,8 +2197,10 @@ int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
return err;
err = sock_error(sock->sk);
- if (err)
+ if (err) {
+ datagrams = err;
goto out_put;
+ }
entry = mmsg;
compat_entry = (struct compat_mmsghdr __user *)mmsg;