commit: 028590e4e5c04847f3e818d7e56df9ec4c1b638e Author: Mike Pagano <mpagano <AT> gentoo <DOT> org> AuthorDate: Tue Sep 10 11:11:38 2019 +0000 Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org> CommitDate: Tue Oct 29 13:59:02 2019 +0000 URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=028590e4
Linux patch 4.14.143 Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org> 0000_README | 4 + 1142_linux-4.14.143.patch | 1534 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 1538 insertions(+) diff --git a/0000_README b/0000_README index 1bb6a46..3e99608 100644 --- a/0000_README +++ b/0000_README @@ -611,6 +611,10 @@ Patch: 1141_linux-4.14.142.patch From: https://www.kernel.org Desc: Linux 4.14.142 +Patch: 1142_linux-4.14.143.patch +From: https://www.kernel.org +Desc: Linux 4.14.143 + Patch: 1500_XATTR_USER_PREFIX.patch From: https://bugs.gentoo.org/show_bug.cgi?id=470644 Desc: Support for namespace user.pax.* on tmpfs. diff --git a/1142_linux-4.14.143.patch b/1142_linux-4.14.143.patch new file mode 100644 index 0000000..cbe0fd9 --- /dev/null +++ b/1142_linux-4.14.143.patch @@ -0,0 +1,1534 @@ +diff --git a/Makefile b/Makefile +index ccced427d9de..caa2fba089a5 100644 +--- a/Makefile ++++ b/Makefile +@@ -1,7 +1,7 @@ + # SPDX-License-Identifier: GPL-2.0 + VERSION = 4 + PATCHLEVEL = 14 +-SUBLEVEL = 142 ++SUBLEVEL = 143 + EXTRAVERSION = + NAME = Petit Gorille + +diff --git a/arch/x86/include/asm/bootparam_utils.h b/arch/x86/include/asm/bootparam_utils.h +index d3983fdf1012..8fa49cf1211d 100644 +--- a/arch/x86/include/asm/bootparam_utils.h ++++ b/arch/x86/include/asm/bootparam_utils.h +@@ -71,6 +71,7 @@ static void sanitize_boot_params(struct boot_params *boot_params) + BOOT_PARAM_PRESERVE(eddbuf_entries), + BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries), + BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer), ++ BOOT_PARAM_PRESERVE(secure_boot), + BOOT_PARAM_PRESERVE(hdr), + BOOT_PARAM_PRESERVE(e820_table), + BOOT_PARAM_PRESERVE(eddbuf), +diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c +index 8199b7e4aff9..f8f9cfded97d 100644 +--- a/arch/x86/kernel/apic/apic.c ++++ b/arch/x86/kernel/apic/apic.c +@@ -1148,10 +1148,6 @@ void clear_local_APIC(void) + apic_write(APIC_LVT0, v | APIC_LVT_MASKED); + v = apic_read(APIC_LVT1); + apic_write(APIC_LVT1, v | APIC_LVT_MASKED); +- if (!x2apic_enabled()) { +- v = apic_read(APIC_LDR) & ~APIC_LDR_MASK; +- apic_write(APIC_LDR, v); +- } + if (maxlvt >= 4) { + v = apic_read(APIC_LVTPC); + apic_write(APIC_LVTPC, v | APIC_LVT_MASKED); +diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c +index 0bbdfcef2aa8..a48a61f22f82 100644 +--- a/drivers/bluetooth/btqca.c ++++ b/drivers/bluetooth/btqca.c +@@ -363,6 +363,9 @@ int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate) + return err; + } + ++ /* Give the controller some time to get ready to receive the NVM */ ++ msleep(10); ++ + /* Download NVM configuration */ + config.type = TLV_TYPE_NVM; + snprintf(config.fwname, sizeof(config.fwname), "qca/nvm_%08x.bin", +diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c +index cada1c75c41c..034b50080304 100644 +--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c ++++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c +@@ -185,6 +185,7 @@ static int mtk_drm_kms_init(struct drm_device *drm) + struct mtk_drm_private *private = drm->dev_private; + struct platform_device *pdev; + struct device_node *np; ++ struct device *dma_dev; + int ret; + + if (!iommu_present(&platform_bus_type)) +@@ -242,7 +243,29 @@ static int mtk_drm_kms_init(struct drm_device *drm) + goto err_component_unbind; + } + +- private->dma_dev = &pdev->dev; ++ dma_dev = &pdev->dev; ++ private->dma_dev = dma_dev; ++ ++ /* ++ * Configure the DMA segment size to make sure we get contiguous IOVA ++ * when importing PRIME buffers. ++ */ ++ if (!dma_dev->dma_parms) { ++ private->dma_parms_allocated = true; ++ dma_dev->dma_parms = ++ devm_kzalloc(drm->dev, sizeof(*dma_dev->dma_parms), ++ GFP_KERNEL); ++ } ++ if (!dma_dev->dma_parms) { ++ ret = -ENOMEM; ++ goto err_component_unbind; ++ } ++ ++ ret = dma_set_max_seg_size(dma_dev, (unsigned int)DMA_BIT_MASK(32)); ++ if (ret) { ++ dev_err(dma_dev, "Failed to set DMA segment size\n"); ++ goto err_unset_dma_parms; ++ } + + /* + * We don't use the drm_irq_install() helpers provided by the DRM +@@ -252,13 +275,16 @@ static int mtk_drm_kms_init(struct drm_device *drm) + drm->irq_enabled = true; + ret = drm_vblank_init(drm, MAX_CRTC); + if (ret < 0) +- goto err_component_unbind; ++ goto err_unset_dma_parms; + + drm_kms_helper_poll_init(drm); + drm_mode_config_reset(drm); + + return 0; + ++err_unset_dma_parms: ++ if (private->dma_parms_allocated) ++ dma_dev->dma_parms = NULL; + err_component_unbind: + component_unbind_all(drm->dev, drm); + err_config_cleanup: +@@ -269,9 +295,14 @@ err_config_cleanup: + + static void mtk_drm_kms_deinit(struct drm_device *drm) + { ++ struct mtk_drm_private *private = drm->dev_private; ++ + drm_kms_helper_poll_fini(drm); + drm_atomic_helper_shutdown(drm); + ++ if (private->dma_parms_allocated) ++ private->dma_dev->dma_parms = NULL; ++ + component_unbind_all(drm->dev, drm); + drm_mode_config_cleanup(drm); + } +@@ -287,6 +318,18 @@ static const struct file_operations mtk_drm_fops = { + .compat_ioctl = drm_compat_ioctl, + }; + ++/* ++ * We need to override this because the device used to import the memory is ++ * not dev->dev, as drm_gem_prime_import() expects. ++ */ ++struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev, ++ struct dma_buf *dma_buf) ++{ ++ struct mtk_drm_private *private = dev->dev_private; ++ ++ return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev); ++} ++ + static struct drm_driver mtk_drm_driver = { + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | + DRIVER_ATOMIC, +@@ -298,7 +341,7 @@ static struct drm_driver mtk_drm_driver = { + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_export = drm_gem_prime_export, +- .gem_prime_import = drm_gem_prime_import, ++ .gem_prime_import = mtk_drm_gem_prime_import, + .gem_prime_get_sg_table = mtk_gem_prime_get_sg_table, + .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table, + .gem_prime_mmap = mtk_drm_gem_mmap_buf, +diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h +index c3378c452c0a..445dd45e65eb 100644 +--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h ++++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h +@@ -56,6 +56,8 @@ struct mtk_drm_private { + } commit; + + struct drm_atomic_state *suspend_state; ++ ++ bool dma_parms_allocated; + }; + + extern struct platform_driver mtk_ddp_driver; +diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c +index 4e940a096b2a..abf107945766 100644 +--- a/drivers/hid/hid-cp2112.c ++++ b/drivers/hid/hid-cp2112.c +@@ -1149,8 +1149,6 @@ static unsigned int cp2112_gpio_irq_startup(struct irq_data *d) + + INIT_DELAYED_WORK(&dev->gpio_poll_worker, cp2112_gpio_poll_callback); + +- cp2112_gpio_direction_input(gc, d->hwirq); +- + if (!dev->gpio_poll) { + dev->gpio_poll = true; + schedule_delayed_work(&dev->gpio_poll_worker, 0); +@@ -1198,6 +1196,12 @@ static int __maybe_unused cp2112_allocate_irq(struct cp2112_device *dev, + return PTR_ERR(dev->desc[pin]); + } + ++ ret = cp2112_gpio_direction_input(&dev->gc, pin); ++ if (ret < 0) { ++ dev_err(dev->gc.parent, "Failed to set GPIO to input dir\n"); ++ goto err_desc; ++ } ++ + ret = gpiochip_lock_as_irq(&dev->gc, pin); + if (ret) { + dev_err(dev->gc.parent, "Failed to lock GPIO as interrupt\n"); +diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c +index d604b3d5aa3e..c69158ccab82 100644 +--- a/drivers/infiniband/hw/mlx4/mad.c ++++ b/drivers/infiniband/hw/mlx4/mad.c +@@ -1680,8 +1680,6 @@ tx_err: + tx_buf_size, DMA_TO_DEVICE); + kfree(tun_qp->tx_ring[i].buf.addr); + } +- kfree(tun_qp->tx_ring); +- tun_qp->tx_ring = NULL; + i = MLX4_NUM_TUNNEL_BUFS; + err: + while (i > 0) { +@@ -1690,6 +1688,8 @@ err: + rx_buf_size, DMA_FROM_DEVICE); + kfree(tun_qp->ring[i].addr); + } ++ kfree(tun_qp->tx_ring); ++ tun_qp->tx_ring = NULL; + kfree(tun_qp->ring); + tun_qp->ring = NULL; + return -ENOMEM; +diff --git a/drivers/input/serio/hyperv-keyboard.c b/drivers/input/serio/hyperv-keyboard.c +index 55288a026e4e..c137ffa6fdec 100644 +--- a/drivers/input/serio/hyperv-keyboard.c ++++ b/drivers/input/serio/hyperv-keyboard.c +@@ -245,40 +245,17 @@ static void hv_kbd_handle_received_packet(struct hv_device *hv_dev, + + static void hv_kbd_on_channel_callback(void *context) + { ++ struct vmpacket_descriptor *desc; + struct hv_device *hv_dev = context; +- void *buffer; +- int bufferlen = 0x100; /* Start with sensible size */ + u32 bytes_recvd; + u64 req_id; +- int error; + +- buffer = kmalloc(bufferlen, GFP_ATOMIC); +- if (!buffer) +- return; +- +- while (1) { +- error = vmbus_recvpacket_raw(hv_dev->channel, buffer, bufferlen, +- &bytes_recvd, &req_id); +- switch (error) { +- case 0: +- if (bytes_recvd == 0) { +- kfree(buffer); +- return; +- } +- +- hv_kbd_handle_received_packet(hv_dev, buffer, +- bytes_recvd, req_id); +- break; ++ foreach_vmbus_pkt(desc, hv_dev->channel) { ++ bytes_recvd = desc->len8 * 8; ++ req_id = desc->trans_id; + +- case -ENOBUFS: +- kfree(buffer); +- /* Handle large packet */ +- bufferlen = bytes_recvd; +- buffer = kmalloc(bytes_recvd, GFP_ATOMIC); +- if (!buffer) +- return; +- break; +- } ++ hv_kbd_handle_received_packet(hv_dev, desc, bytes_recvd, ++ req_id); + } + } + +diff --git a/drivers/net/ethernet/cavium/liquidio/request_manager.c b/drivers/net/ethernet/cavium/liquidio/request_manager.c +index 1e0fbce86d60..55e873126463 100644 +--- a/drivers/net/ethernet/cavium/liquidio/request_manager.c ++++ b/drivers/net/ethernet/cavium/liquidio/request_manager.c +@@ -232,8 +232,10 @@ int octeon_setup_iq(struct octeon_device *oct, + } + + oct->num_iqs++; +- if (oct->fn_list.enable_io_queues(oct)) ++ if (oct->fn_list.enable_io_queues(oct)) { ++ octeon_delete_instr_queue(oct, iq_no); + return 1; ++ } + + return 0; + } +diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +index 76540b0e082d..9e5cd18e7358 100644 +--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c ++++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +@@ -2777,8 +2777,10 @@ static ssize_t blocked_fl_write(struct file *filp, const char __user *ubuf, + return -ENOMEM; + + err = bitmap_parse_user(ubuf, count, t, adap->sge.egr_sz); +- if (err) ++ if (err) { ++ kvfree(t); + return err; ++ } + + bitmap_copy(adap->sge.blocked_fl, t, adap->sge.egr_sz); + kvfree(t); +diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c +index 754dff4c1771..880d925438c1 100644 +--- a/drivers/net/ethernet/ibm/ibmveth.c ++++ b/drivers/net/ethernet/ibm/ibmveth.c +@@ -1618,7 +1618,7 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) + struct net_device *netdev; + struct ibmveth_adapter *adapter; + unsigned char *mac_addr_p; +- unsigned int *mcastFilterSize_p; ++ __be32 *mcastFilterSize_p; + long ret; + unsigned long ret_attr; + +@@ -1640,8 +1640,9 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) + return -EINVAL; + } + +- mcastFilterSize_p = (unsigned int *)vio_get_attribute(dev, +- VETH_MCAST_FILTER_SIZE, NULL); ++ mcastFilterSize_p = (__be32 *)vio_get_attribute(dev, ++ VETH_MCAST_FILTER_SIZE, ++ NULL); + if (!mcastFilterSize_p) { + dev_err(&dev->dev, "Can't find VETH_MCAST_FILTER_SIZE " + "attribute\n"); +@@ -1658,7 +1659,7 @@ static int ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) + + adapter->vdev = dev; + adapter->netdev = netdev; +- adapter->mcastFilterSize = *mcastFilterSize_p; ++ adapter->mcastFilterSize = be32_to_cpu(*mcastFilterSize_p); + adapter->pool_config = 0; + + netif_napi_add(netdev, &adapter->napi, ibmveth_poll, 16); +diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c +index b171ed2015fe..a0a555052d8c 100644 +--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c ++++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c +@@ -3922,7 +3922,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) + * setup (if available). */ + status = myri10ge_request_irq(mgp); + if (status != 0) +- goto abort_with_firmware; ++ goto abort_with_slices; + myri10ge_free_irq(mgp); + + /* Save configuration space to be restored if the +diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c +index ce79af4a7f6f..d73617cc3b15 100644 +--- a/drivers/net/ethernet/renesas/ravb_main.c ++++ b/drivers/net/ethernet/renesas/ravb_main.c +@@ -1,6 +1,6 @@ + /* Renesas Ethernet AVB device driver + * +- * Copyright (C) 2014-2015 Renesas Electronics Corporation ++ * Copyright (C) 2014-2019 Renesas Electronics Corporation + * Copyright (C) 2015 Renesas Solutions Corp. + * Copyright (C) 2015-2016 Cogent Embedded, Inc. <sou...@cogentembedded.com> + * +@@ -513,7 +513,10 @@ static void ravb_get_tx_tstamp(struct net_device *ndev) + kfree(ts_skb); + if (tag == tfa_tag) { + skb_tstamp_tx(skb, &shhwtstamps); ++ dev_consume_skb_any(skb); + break; ++ } else { ++ dev_kfree_skb_any(skb); + } + } + ravb_modify(ndev, TCCR, TCCR_TFR, TCCR_TFR); +@@ -1576,7 +1579,7 @@ static netdev_tx_t ravb_start_xmit(struct sk_buff *skb, struct net_device *ndev) + DMA_TO_DEVICE); + goto unmap; + } +- ts_skb->skb = skb; ++ ts_skb->skb = skb_get(skb); + ts_skb->tag = priv->ts_skb_tag++; + priv->ts_skb_tag &= 0x3ff; + list_add_tail(&ts_skb->list, &priv->ts_skb_list); +@@ -1704,6 +1707,7 @@ static int ravb_close(struct net_device *ndev) + /* Clear the timestamp list */ + list_for_each_entry_safe(ts_skb, ts_skb2, &priv->ts_skb_list, list) { + list_del(&ts_skb->list); ++ kfree_skb(ts_skb->skb); + kfree(ts_skb); + } + +diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +index 01787344f6e5..712b5eb3507a 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c ++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +@@ -1145,10 +1145,8 @@ static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable) + int ret; + struct device *dev = &bsp_priv->pdev->dev; + +- if (!ldo) { +- dev_err(dev, "no regulator found\n"); +- return -1; +- } ++ if (!ldo) ++ return 0; + + if (enable) { + ret = regulator_enable(ldo); +diff --git a/drivers/net/ethernet/toshiba/tc35815.c b/drivers/net/ethernet/toshiba/tc35815.c +index cce9c9ed46aa..9146068979d2 100644 +--- a/drivers/net/ethernet/toshiba/tc35815.c ++++ b/drivers/net/ethernet/toshiba/tc35815.c +@@ -1497,7 +1497,7 @@ tc35815_rx(struct net_device *dev, int limit) + pci_unmap_single(lp->pci_dev, + lp->rx_skbs[cur_bd].skb_dma, + RX_BUF_SIZE, PCI_DMA_FROMDEVICE); +- if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN) ++ if (!HAVE_DMA_RXALIGN(lp) && NET_IP_ALIGN != 0) + memmove(skb->data, skb->data - NET_IP_ALIGN, + pkt_len); + data = skb_put(skb, pkt_len); +diff --git a/drivers/net/ethernet/tundra/tsi108_eth.c b/drivers/net/ethernet/tundra/tsi108_eth.c +index c2d15d9c0c33..455979e47424 100644 +--- a/drivers/net/ethernet/tundra/tsi108_eth.c ++++ b/drivers/net/ethernet/tundra/tsi108_eth.c +@@ -381,9 +381,10 @@ tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift, + static void tsi108_stat_carry(struct net_device *dev) + { + struct tsi108_prv_data *data = netdev_priv(dev); ++ unsigned long flags; + u32 carry1, carry2; + +- spin_lock_irq(&data->misclock); ++ spin_lock_irqsave(&data->misclock, flags); + + carry1 = TSI_READ(TSI108_STAT_CARRY1); + carry2 = TSI_READ(TSI108_STAT_CARRY2); +@@ -451,7 +452,7 @@ static void tsi108_stat_carry(struct net_device *dev) + TSI108_STAT_TXPAUSEDROP_CARRY, + &data->tx_pause_drop); + +- spin_unlock_irq(&data->misclock); ++ spin_unlock_irqrestore(&data->misclock, flags); + } + + /* Read a stat counter atomically with respect to carries. +diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c +index eb92720dd1c4..33c1f6548fb7 100644 +--- a/drivers/net/hyperv/netvsc_drv.c ++++ b/drivers/net/hyperv/netvsc_drv.c +@@ -1170,12 +1170,15 @@ static void netvsc_get_stats64(struct net_device *net, + struct rtnl_link_stats64 *t) + { + struct net_device_context *ndev_ctx = netdev_priv(net); +- struct netvsc_device *nvdev = rcu_dereference_rtnl(ndev_ctx->nvdev); ++ struct netvsc_device *nvdev; + struct netvsc_vf_pcpu_stats vf_tot; + int i; + ++ rcu_read_lock(); ++ ++ nvdev = rcu_dereference(ndev_ctx->nvdev); + if (!nvdev) +- return; ++ goto out; + + netdev_stats_to_stats64(t, &net->stats); + +@@ -1214,6 +1217,8 @@ static void netvsc_get_stats64(struct net_device *net, + t->rx_packets += packets; + t->multicast += multicast; + } ++out: ++ rcu_read_unlock(); + } + + static int netvsc_set_mac_addr(struct net_device *ndev, void *p) +diff --git a/drivers/net/usb/cx82310_eth.c b/drivers/net/usb/cx82310_eth.c +index 947bea81d924..dfbdea22fbad 100644 +--- a/drivers/net/usb/cx82310_eth.c ++++ b/drivers/net/usb/cx82310_eth.c +@@ -175,7 +175,8 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf) + } + if (!timeout) { + dev_err(&udev->dev, "firmware not ready in time\n"); +- return -ETIMEDOUT; ++ ret = -ETIMEDOUT; ++ goto err; + } + + /* enable ethernet mode (?) */ +diff --git a/drivers/net/usb/kalmia.c b/drivers/net/usb/kalmia.c +index ce0b0b4e3a57..c677ec2bae18 100644 +--- a/drivers/net/usb/kalmia.c ++++ b/drivers/net/usb/kalmia.c +@@ -117,16 +117,16 @@ kalmia_init_and_get_ethernet_addr(struct usbnet *dev, u8 *ethernet_addr) + status = kalmia_send_init_packet(dev, usb_buf, sizeof(init_msg_1) + / sizeof(init_msg_1[0]), usb_buf, 24); + if (status != 0) +- return status; ++ goto out; + + memcpy(usb_buf, init_msg_2, 12); + status = kalmia_send_init_packet(dev, usb_buf, sizeof(init_msg_2) + / sizeof(init_msg_2[0]), usb_buf, 28); + if (status != 0) +- return status; ++ goto out; + + memcpy(ethernet_addr, usb_buf + 10, ETH_ALEN); +- ++out: + kfree(usb_buf); + return status; + } +diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c +index b62c41114e34..24b994c68bcc 100644 +--- a/drivers/net/usb/lan78xx.c ++++ b/drivers/net/usb/lan78xx.c +@@ -3645,7 +3645,7 @@ static int lan78xx_probe(struct usb_interface *intf, + ret = register_netdev(netdev); + if (ret != 0) { + netif_err(dev, probe, netdev, "couldn't register the device\n"); +- goto out3; ++ goto out4; + } + + usb_set_intfdata(intf, dev); +@@ -3660,12 +3660,14 @@ static int lan78xx_probe(struct usb_interface *intf, + + ret = lan78xx_phy_init(dev); + if (ret < 0) +- goto out4; ++ goto out5; + + return 0; + +-out4: ++out5: + unregister_netdev(netdev); ++out4: ++ usb_free_urb(dev->urb_intr); + out3: + lan78xx_unbind(dev, intf); + out2: +diff --git a/drivers/net/wimax/i2400m/fw.c b/drivers/net/wimax/i2400m/fw.c +index a89b5685e68b..4577ee5bbddd 100644 +--- a/drivers/net/wimax/i2400m/fw.c ++++ b/drivers/net/wimax/i2400m/fw.c +@@ -351,13 +351,15 @@ int i2400m_barker_db_init(const char *_options) + } + result = i2400m_barker_db_add(barker); + if (result < 0) +- goto error_add; ++ goto error_parse_add; + } + kfree(options_orig); + } + return 0; + ++error_parse_add: + error_parse: ++ kfree(options_orig); + error_add: + kfree(i2400m_barker_db); + return result; +diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c +index bd00b7cc8b78..5c89bbb05441 100644 +--- a/drivers/spi/spi-bcm2835aux.c ++++ b/drivers/spi/spi-bcm2835aux.c +@@ -178,24 +178,14 @@ static void bcm2835aux_spi_reset_hw(struct bcm2835aux_spi *bs) + BCM2835_AUX_SPI_CNTL0_CLEARFIFO); + } + +-static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) ++static void bcm2835aux_spi_transfer_helper(struct bcm2835aux_spi *bs) + { +- struct spi_master *master = dev_id; +- struct bcm2835aux_spi *bs = spi_master_get_devdata(master); +- irqreturn_t ret = IRQ_NONE; +- +- /* IRQ may be shared, so return if our interrupts are disabled */ +- if (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_CNTL1) & +- (BCM2835_AUX_SPI_CNTL1_TXEMPTY | BCM2835_AUX_SPI_CNTL1_IDLE))) +- return ret; ++ u32 stat = bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT); + + /* check if we have data to read */ +- while (bs->rx_len && +- (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & +- BCM2835_AUX_SPI_STAT_RX_EMPTY))) { ++ for (; bs->rx_len && (stat & BCM2835_AUX_SPI_STAT_RX_LVL); ++ stat = bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT)) + bcm2835aux_rd_fifo(bs); +- ret = IRQ_HANDLED; +- } + + /* check if we have data to write */ + while (bs->tx_len && +@@ -203,16 +193,21 @@ static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) + (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & + BCM2835_AUX_SPI_STAT_TX_FULL))) { + bcm2835aux_wr_fifo(bs); +- ret = IRQ_HANDLED; + } ++} + +- /* and check if we have reached "done" */ +- while (bs->rx_len && +- (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT) & +- BCM2835_AUX_SPI_STAT_BUSY))) { +- bcm2835aux_rd_fifo(bs); +- ret = IRQ_HANDLED; +- } ++static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) ++{ ++ struct spi_master *master = dev_id; ++ struct bcm2835aux_spi *bs = spi_master_get_devdata(master); ++ ++ /* IRQ may be shared, so return if our interrupts are disabled */ ++ if (!(bcm2835aux_rd(bs, BCM2835_AUX_SPI_CNTL1) & ++ (BCM2835_AUX_SPI_CNTL1_TXEMPTY | BCM2835_AUX_SPI_CNTL1_IDLE))) ++ return IRQ_NONE; ++ ++ /* do common fifo handling */ ++ bcm2835aux_spi_transfer_helper(bs); + + if (!bs->tx_len) { + /* disable tx fifo empty interrupt */ +@@ -226,8 +221,7 @@ static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) + complete(&master->xfer_completion); + } + +- /* and return */ +- return ret; ++ return IRQ_HANDLED; + } + + static int __bcm2835aux_spi_transfer_one_irq(struct spi_master *master, +@@ -273,7 +267,6 @@ static int bcm2835aux_spi_transfer_one_poll(struct spi_master *master, + { + struct bcm2835aux_spi *bs = spi_master_get_devdata(master); + unsigned long timeout; +- u32 stat; + + /* configure spi */ + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, bs->cntl[1]); +@@ -284,24 +277,9 @@ static int bcm2835aux_spi_transfer_one_poll(struct spi_master *master, + + /* loop until finished the transfer */ + while (bs->rx_len) { +- /* read status */ +- stat = bcm2835aux_rd(bs, BCM2835_AUX_SPI_STAT); +- +- /* fill in tx fifo with remaining data */ +- if ((bs->tx_len) && (!(stat & BCM2835_AUX_SPI_STAT_TX_FULL))) { +- bcm2835aux_wr_fifo(bs); +- continue; +- } + +- /* read data from fifo for both cases */ +- if (!(stat & BCM2835_AUX_SPI_STAT_RX_EMPTY)) { +- bcm2835aux_rd_fifo(bs); +- continue; +- } +- if (!(stat & BCM2835_AUX_SPI_STAT_BUSY)) { +- bcm2835aux_rd_fifo(bs); +- continue; +- } ++ /* do common fifo handling */ ++ bcm2835aux_spi_transfer_helper(bs); + + /* there is still data pending to read check the timeout */ + if (bs->rx_len && time_after(jiffies, timeout)) { +diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c +index 238d24348a98..df95e39ccd45 100644 +--- a/fs/ceph/caps.c ++++ b/fs/ceph/caps.c +@@ -1162,6 +1162,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap, + { + struct ceph_inode_info *ci = cap->ci; + struct inode *inode = &ci->vfs_inode; ++ struct ceph_buffer *old_blob = NULL; + struct cap_msg_args arg; + int held, revoking, dropping; + int wake = 0; +@@ -1227,7 +1228,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap, + ci->i_requested_max_size = arg.max_size; + + if (flushing & CEPH_CAP_XATTR_EXCL) { +- __ceph_build_xattrs_blob(ci); ++ old_blob = __ceph_build_xattrs_blob(ci); + arg.xattr_version = ci->i_xattrs.version; + arg.xattr_buf = ci->i_xattrs.blob; + } else { +@@ -1262,6 +1263,8 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap, + + spin_unlock(&ci->i_ceph_lock); + ++ ceph_buffer_put(old_blob); ++ + ret = send_cap_msg(&arg); + if (ret < 0) { + dout("error sending cap msg, must requeue %p\n", inode); +diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c +index f2b722f0df5d..9bda8c7a80a0 100644 +--- a/fs/ceph/inode.c ++++ b/fs/ceph/inode.c +@@ -730,6 +730,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page, + int issued = 0, implemented, new_issued; + struct timespec mtime, atime, ctime; + struct ceph_buffer *xattr_blob = NULL; ++ struct ceph_buffer *old_blob = NULL; + struct ceph_string *pool_ns = NULL; + struct ceph_cap *new_cap = NULL; + int err = 0; +@@ -847,7 +848,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page, + if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && + le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { + if (ci->i_xattrs.blob) +- ceph_buffer_put(ci->i_xattrs.blob); ++ old_blob = ci->i_xattrs.blob; + ci->i_xattrs.blob = xattr_blob; + if (xattr_blob) + memcpy(ci->i_xattrs.blob->vec.iov_base, +@@ -993,8 +994,8 @@ static int fill_inode(struct inode *inode, struct page *locked_page, + out: + if (new_cap) + ceph_put_cap(mdsc, new_cap); +- if (xattr_blob) +- ceph_buffer_put(xattr_blob); ++ ceph_buffer_put(old_blob); ++ ceph_buffer_put(xattr_blob); + ceph_put_string(pool_ns); + return err; + } +diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c +index a7e763dac038..29ed1688a1d3 100644 +--- a/fs/ceph/snap.c ++++ b/fs/ceph/snap.c +@@ -460,6 +460,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci) + struct inode *inode = &ci->vfs_inode; + struct ceph_cap_snap *capsnap; + struct ceph_snap_context *old_snapc, *new_snapc; ++ struct ceph_buffer *old_blob = NULL; + int used, dirty; + + capsnap = kzalloc(sizeof(*capsnap), GFP_NOFS); +@@ -536,7 +537,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci) + capsnap->gid = inode->i_gid; + + if (dirty & CEPH_CAP_XATTR_EXCL) { +- __ceph_build_xattrs_blob(ci); ++ old_blob = __ceph_build_xattrs_blob(ci); + capsnap->xattr_blob = + ceph_buffer_get(ci->i_xattrs.blob); + capsnap->xattr_version = ci->i_xattrs.version; +@@ -579,6 +580,7 @@ update_snapc: + } + spin_unlock(&ci->i_ceph_lock); + ++ ceph_buffer_put(old_blob); + kfree(capsnap); + ceph_put_snap_context(old_snapc); + } +diff --git a/fs/ceph/super.h b/fs/ceph/super.h +index 60b70f0985f6..46f600107cb5 100644 +--- a/fs/ceph/super.h ++++ b/fs/ceph/super.h +@@ -835,7 +835,7 @@ extern int ceph_getattr(const struct path *path, struct kstat *stat, + int __ceph_setxattr(struct inode *, const char *, const void *, size_t, int); + ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); + extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); +-extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci); ++extern struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci); + extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); + extern void __init ceph_xattr_init(void); + extern void ceph_xattr_exit(void); +diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c +index 0376db8a74f8..3a166f860b6c 100644 +--- a/fs/ceph/xattr.c ++++ b/fs/ceph/xattr.c +@@ -681,12 +681,15 @@ static int __get_required_blob_size(struct ceph_inode_info *ci, int name_size, + + /* + * If there are dirty xattrs, reencode xattrs into the prealloc_blob +- * and swap into place. ++ * and swap into place. It returns the old i_xattrs.blob (or NULL) so ++ * that it can be freed by the caller as the i_ceph_lock is likely to be ++ * held. + */ +-void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) ++struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci) + { + struct rb_node *p; + struct ceph_inode_xattr *xattr = NULL; ++ struct ceph_buffer *old_blob = NULL; + void *dest; + + dout("__build_xattrs_blob %p\n", &ci->vfs_inode); +@@ -717,12 +720,14 @@ void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) + dest - ci->i_xattrs.prealloc_blob->vec.iov_base; + + if (ci->i_xattrs.blob) +- ceph_buffer_put(ci->i_xattrs.blob); ++ old_blob = ci->i_xattrs.blob; + ci->i_xattrs.blob = ci->i_xattrs.prealloc_blob; + ci->i_xattrs.prealloc_blob = NULL; + ci->i_xattrs.dirty = false; + ci->i_xattrs.version++; + } ++ ++ return old_blob; + } + + static inline int __get_request_mask(struct inode *in) { +@@ -955,6 +960,7 @@ int __ceph_setxattr(struct inode *inode, const char *name, + struct ceph_inode_info *ci = ceph_inode(inode); + struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; + struct ceph_cap_flush *prealloc_cf = NULL; ++ struct ceph_buffer *old_blob = NULL; + int issued; + int err; + int dirty = 0; +@@ -1023,13 +1029,15 @@ retry: + struct ceph_buffer *blob; + + spin_unlock(&ci->i_ceph_lock); +- dout(" preaallocating new blob size=%d\n", required_blob_size); ++ ceph_buffer_put(old_blob); /* Shouldn't be required */ ++ dout(" pre-allocating new blob size=%d\n", required_blob_size); + blob = ceph_buffer_new(required_blob_size, GFP_NOFS); + if (!blob) + goto do_sync_unlocked; + spin_lock(&ci->i_ceph_lock); ++ /* prealloc_blob can't be released while holding i_ceph_lock */ + if (ci->i_xattrs.prealloc_blob) +- ceph_buffer_put(ci->i_xattrs.prealloc_blob); ++ old_blob = ci->i_xattrs.prealloc_blob; + ci->i_xattrs.prealloc_blob = blob; + goto retry; + } +@@ -1045,6 +1053,7 @@ retry: + } + + spin_unlock(&ci->i_ceph_lock); ++ ceph_buffer_put(old_blob); + if (lock_snap_rwsem) + up_read(&mdsc->snap_rwsem); + if (dirty) +diff --git a/fs/read_write.c b/fs/read_write.c +index d6f8bfb0f794..38a8bcccf0dd 100644 +--- a/fs/read_write.c ++++ b/fs/read_write.c +@@ -1882,10 +1882,7 @@ int vfs_clone_file_range(struct file *file_in, loff_t pos_in, + } + EXPORT_SYMBOL(vfs_clone_file_range); + +-/* +- * Read a page's worth of file data into the page cache. Return the page +- * locked. +- */ ++/* Read a page's worth of file data into the page cache. */ + static struct page *vfs_dedupe_get_page(struct inode *inode, loff_t offset) + { + struct address_space *mapping; +@@ -1901,10 +1898,32 @@ static struct page *vfs_dedupe_get_page(struct inode *inode, loff_t offset) + put_page(page); + return ERR_PTR(-EIO); + } +- lock_page(page); + return page; + } + ++/* ++ * Lock two pages, ensuring that we lock in offset order if the pages are from ++ * the same file. ++ */ ++static void vfs_lock_two_pages(struct page *page1, struct page *page2) ++{ ++ /* Always lock in order of increasing index. */ ++ if (page1->index > page2->index) ++ swap(page1, page2); ++ ++ lock_page(page1); ++ if (page1 != page2) ++ lock_page(page2); ++} ++ ++/* Unlock two pages, being careful not to unlock the same page twice. */ ++static void vfs_unlock_two_pages(struct page *page1, struct page *page2) ++{ ++ unlock_page(page1); ++ if (page1 != page2) ++ unlock_page(page2); ++} ++ + /* + * Compare extents of two files to see if they are the same. + * Caller must have locked both inodes to prevent write races. +@@ -1942,10 +1961,24 @@ int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff, + dest_page = vfs_dedupe_get_page(dest, destoff); + if (IS_ERR(dest_page)) { + error = PTR_ERR(dest_page); +- unlock_page(src_page); + put_page(src_page); + goto out_error; + } ++ ++ vfs_lock_two_pages(src_page, dest_page); ++ ++ /* ++ * Now that we've locked both pages, make sure they're still ++ * mapped to the file data we're interested in. If not, ++ * someone is invalidating pages on us and we lose. ++ */ ++ if (!PageUptodate(src_page) || !PageUptodate(dest_page) || ++ src_page->mapping != src->i_mapping || ++ dest_page->mapping != dest->i_mapping) { ++ same = false; ++ goto unlock; ++ } ++ + src_addr = kmap_atomic(src_page); + dest_addr = kmap_atomic(dest_page); + +@@ -1957,8 +1990,8 @@ int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff, + + kunmap_atomic(dest_addr); + kunmap_atomic(src_addr); +- unlock_page(dest_page); +- unlock_page(src_page); ++unlock: ++ vfs_unlock_two_pages(src_page, dest_page); + put_page(dest_page); + put_page(src_page); + +diff --git a/include/linux/ceph/buffer.h b/include/linux/ceph/buffer.h +index 5e58bb29b1a3..11cdc7c60480 100644 +--- a/include/linux/ceph/buffer.h ++++ b/include/linux/ceph/buffer.h +@@ -30,7 +30,8 @@ static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b) + + static inline void ceph_buffer_put(struct ceph_buffer *b) + { +- kref_put(&b->kref, ceph_buffer_release); ++ if (b) ++ kref_put(&b->kref, ceph_buffer_release); + } + + extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end); +diff --git a/include/linux/gpio.h b/include/linux/gpio.h +index 8ef7fc0ce0f0..b2f103b170a9 100644 +--- a/include/linux/gpio.h ++++ b/include/linux/gpio.h +@@ -230,30 +230,6 @@ static inline int irq_to_gpio(unsigned irq) + return -EINVAL; + } + +-static inline int +-gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name, +- unsigned int gpio_offset, unsigned int pin_offset, +- unsigned int npins) +-{ +- WARN_ON(1); +- return -EINVAL; +-} +- +-static inline int +-gpiochip_add_pingroup_range(struct gpio_chip *chip, +- struct pinctrl_dev *pctldev, +- unsigned int gpio_offset, const char *pin_group) +-{ +- WARN_ON(1); +- return -EINVAL; +-} +- +-static inline void +-gpiochip_remove_pin_ranges(struct gpio_chip *chip) +-{ +- WARN_ON(1); +-} +- + static inline int devm_gpio_request(struct device *dev, unsigned gpio, + const char *label) + { +diff --git a/include/net/act_api.h b/include/net/act_api.h +index a10a3b1813f3..775387d6ca95 100644 +--- a/include/net/act_api.h ++++ b/include/net/act_api.h +@@ -14,6 +14,7 @@ + struct tcf_idrinfo { + spinlock_t lock; + struct idr action_idr; ++ struct net *net; + }; + + struct tc_action_ops; +@@ -104,7 +105,7 @@ struct tc_action_net { + }; + + static inline +-int tc_action_net_init(struct tc_action_net *tn, ++int tc_action_net_init(struct net *net, struct tc_action_net *tn, + const struct tc_action_ops *ops) + { + int err = 0; +@@ -113,6 +114,7 @@ int tc_action_net_init(struct tc_action_net *tn, + if (!tn->idrinfo) + return -ENOMEM; + tn->ops = ops; ++ tn->idrinfo->net = net; + spin_lock_init(&tn->idrinfo->lock); + idr_init(&tn->idrinfo->action_idr); + return err; +diff --git a/include/net/psample.h b/include/net/psample.h +index 9b80f814ab04..94cb37a7bf75 100644 +--- a/include/net/psample.h ++++ b/include/net/psample.h +@@ -12,6 +12,7 @@ struct psample_group { + u32 group_num; + u32 refcount; + u32 seq; ++ struct rcu_head rcu; + }; + + struct psample_group *psample_group_get(struct net *net, u32 group_num); +diff --git a/kernel/kprobes.c b/kernel/kprobes.c +index ec11bb986a8b..c43bc2bc5b2c 100644 +--- a/kernel/kprobes.c ++++ b/kernel/kprobes.c +@@ -483,6 +483,7 @@ static DECLARE_DELAYED_WORK(optimizing_work, kprobe_optimizer); + */ + static void do_optimize_kprobes(void) + { ++ lockdep_assert_held(&text_mutex); + /* + * The optimization/unoptimization refers online_cpus via + * stop_machine() and cpu-hotplug modifies online_cpus. +@@ -500,9 +501,7 @@ static void do_optimize_kprobes(void) + list_empty(&optimizing_list)) + return; + +- mutex_lock(&text_mutex); + arch_optimize_kprobes(&optimizing_list); +- mutex_unlock(&text_mutex); + } + + /* +@@ -513,6 +512,7 @@ static void do_unoptimize_kprobes(void) + { + struct optimized_kprobe *op, *tmp; + ++ lockdep_assert_held(&text_mutex); + /* See comment in do_optimize_kprobes() */ + lockdep_assert_cpus_held(); + +@@ -520,7 +520,6 @@ static void do_unoptimize_kprobes(void) + if (list_empty(&unoptimizing_list)) + return; + +- mutex_lock(&text_mutex); + arch_unoptimize_kprobes(&unoptimizing_list, &freeing_list); + /* Loop free_list for disarming */ + list_for_each_entry_safe(op, tmp, &freeing_list, list) { +@@ -537,7 +536,6 @@ static void do_unoptimize_kprobes(void) + } else + list_del_init(&op->list); + } +- mutex_unlock(&text_mutex); + } + + /* Reclaim all kprobes on the free_list */ +@@ -563,6 +561,7 @@ static void kprobe_optimizer(struct work_struct *work) + { + mutex_lock(&kprobe_mutex); + cpus_read_lock(); ++ mutex_lock(&text_mutex); + /* Lock modules while optimizing kprobes */ + mutex_lock(&module_mutex); + +@@ -590,6 +589,7 @@ static void kprobe_optimizer(struct work_struct *work) + do_free_cleaned_kprobes(); + + mutex_unlock(&module_mutex); ++ mutex_unlock(&text_mutex); + cpus_read_unlock(); + mutex_unlock(&kprobe_mutex); + +diff --git a/net/core/netpoll.c b/net/core/netpoll.c +index 912731bed7b7..abab3753a9e0 100644 +--- a/net/core/netpoll.c ++++ b/net/core/netpoll.c +@@ -122,7 +122,7 @@ static void queue_process(struct work_struct *work) + txq = netdev_get_tx_queue(dev, q_index); + HARD_TX_LOCK(dev, txq, smp_processor_id()); + if (netif_xmit_frozen_or_stopped(txq) || +- netpoll_start_xmit(skb, dev, txq) != NETDEV_TX_OK) { ++ !dev_xmit_complete(netpoll_start_xmit(skb, dev, txq))) { + skb_queue_head(&npinfo->txq, skb); + HARD_TX_UNLOCK(dev, txq); + local_irq_restore(flags); +@@ -357,7 +357,7 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, + + HARD_TX_UNLOCK(dev, txq); + +- if (status == NETDEV_TX_OK) ++ if (dev_xmit_complete(status)) + break; + + } +@@ -374,7 +374,7 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, + + } + +- if (status != NETDEV_TX_OK) { ++ if (!dev_xmit_complete(status)) { + skb_queue_tail(&npinfo->txq, skb); + schedule_delayed_work(&npinfo->tx_work,0); + } +diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c +index 541686f3f835..5ce069ce2a97 100644 +--- a/net/ipv4/tcp.c ++++ b/net/ipv4/tcp.c +@@ -914,6 +914,22 @@ static int tcp_send_mss(struct sock *sk, int *size_goal, int flags) + return mss_now; + } + ++/* In some cases, both sendpage() and sendmsg() could have added ++ * an skb to the write queue, but failed adding payload on it. ++ * We need to remove it to consume less memory, but more ++ * importantly be able to generate EPOLLOUT for Edge Trigger epoll() ++ * users. ++ */ ++static void tcp_remove_empty_skb(struct sock *sk, struct sk_buff *skb) ++{ ++ if (skb && !skb->len) { ++ tcp_unlink_write_queue(skb, sk); ++ if (tcp_write_queue_empty(sk)) ++ tcp_chrono_stop(sk, TCP_CHRONO_BUSY); ++ sk_wmem_free_skb(sk, skb); ++ } ++} ++ + ssize_t do_tcp_sendpages(struct sock *sk, struct page *page, int offset, + size_t size, int flags) + { +@@ -1034,6 +1050,7 @@ out: + return copied; + + do_error: ++ tcp_remove_empty_skb(sk, tcp_write_queue_tail(sk)); + if (copied) + goto out; + out_err: +@@ -1412,17 +1429,11 @@ out_nopush: + sock_zerocopy_put(uarg); + return copied + copied_syn; + ++do_error: ++ skb = tcp_write_queue_tail(sk); + do_fault: +- if (!skb->len) { +- tcp_unlink_write_queue(skb, sk); +- /* It is the one place in all of TCP, except connection +- * reset, where we can be unlinking the send_head. +- */ +- tcp_check_send_head(sk, skb); +- sk_wmem_free_skb(sk, skb); +- } ++ tcp_remove_empty_skb(sk, skb); + +-do_error: + if (copied + copied_syn) + goto out; + out_err: +diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c +index a99086bf26ea..5b808089eff8 100644 +--- a/net/ipv4/tcp_output.c ++++ b/net/ipv4/tcp_output.c +@@ -2025,7 +2025,7 @@ static bool tcp_can_coalesce_send_queue_head(struct sock *sk, int len) + if (len <= skb->len) + break; + +- if (unlikely(TCP_SKB_CB(skb)->eor)) ++ if (unlikely(TCP_SKB_CB(skb)->eor) || tcp_has_tx_tstamp(skb)) + return false; + + len -= skb->len; +@@ -2148,6 +2148,7 @@ static int tcp_mtu_probe(struct sock *sk) + * we need to propagate it to the new skb. + */ + TCP_SKB_CB(nskb)->eor = TCP_SKB_CB(skb)->eor; ++ tcp_skb_collapse_tstamp(nskb, skb); + tcp_unlink_write_queue(skb, sk); + sk_wmem_free_skb(sk, skb); + } else { +diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c +index bd269e78272a..611dc5d55fa0 100644 +--- a/net/ipv6/mcast.c ++++ b/net/ipv6/mcast.c +@@ -772,12 +772,13 @@ static void mld_del_delrec(struct inet6_dev *idev, struct ifmcaddr6 *im) + im->idev = pmc->idev; + im->mca_crcount = idev->mc_qrv; + if (im->mca_sfmode == MCAST_INCLUDE) { +- im->mca_tomb = pmc->mca_tomb; +- im->mca_sources = pmc->mca_sources; ++ swap(im->mca_tomb, pmc->mca_tomb); ++ swap(im->mca_sources, pmc->mca_sources); + for (psf = im->mca_sources; psf; psf = psf->sf_next) + psf->sf_crcount = im->mca_crcount; + } + in6_dev_put(pmc->idev); ++ ip6_mc_clear_src(pmc); + kfree(pmc); + } + spin_unlock_bh(&im->mca_lock); +diff --git a/net/psample/psample.c b/net/psample/psample.c +index 64f95624f219..4cea353221da 100644 +--- a/net/psample/psample.c ++++ b/net/psample/psample.c +@@ -156,7 +156,7 @@ static void psample_group_destroy(struct psample_group *group) + { + psample_group_notify(group, PSAMPLE_CMD_DEL_GROUP); + list_del(&group->list); +- kfree(group); ++ kfree_rcu(group, rcu); + } + + static struct psample_group * +diff --git a/net/sched/act_bpf.c b/net/sched/act_bpf.c +index 364a878e51cb..bdc8885c0448 100644 +--- a/net/sched/act_bpf.c ++++ b/net/sched/act_bpf.c +@@ -402,7 +402,7 @@ static __net_init int bpf_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, bpf_net_id); + +- return tc_action_net_init(tn, &act_bpf_ops); ++ return tc_action_net_init(net, tn, &act_bpf_ops); + } + + static void __net_exit bpf_exit_net(struct net *net) +diff --git a/net/sched/act_connmark.c b/net/sched/act_connmark.c +index 10b7a8855a6c..de0cd73a5a5d 100644 +--- a/net/sched/act_connmark.c ++++ b/net/sched/act_connmark.c +@@ -206,7 +206,7 @@ static __net_init int connmark_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, connmark_net_id); + +- return tc_action_net_init(tn, &act_connmark_ops); ++ return tc_action_net_init(net, tn, &act_connmark_ops); + } + + static void __net_exit connmark_exit_net(struct net *net) +diff --git a/net/sched/act_csum.c b/net/sched/act_csum.c +index d836f998117b..a449594553d0 100644 +--- a/net/sched/act_csum.c ++++ b/net/sched/act_csum.c +@@ -632,7 +632,7 @@ static __net_init int csum_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, csum_net_id); + +- return tc_action_net_init(tn, &act_csum_ops); ++ return tc_action_net_init(net, tn, &act_csum_ops); + } + + static void __net_exit csum_exit_net(struct net *net) +diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c +index a0ac42b3ed06..69512d3d0818 100644 +--- a/net/sched/act_gact.c ++++ b/net/sched/act_gact.c +@@ -232,7 +232,7 @@ static __net_init int gact_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, gact_net_id); + +- return tc_action_net_init(tn, &act_gact_ops); ++ return tc_action_net_init(net, tn, &act_gact_ops); + } + + static void __net_exit gact_exit_net(struct net *net) +diff --git a/net/sched/act_ife.c b/net/sched/act_ife.c +index 16a403d17f44..aea8ee40e76b 100644 +--- a/net/sched/act_ife.c ++++ b/net/sched/act_ife.c +@@ -837,7 +837,7 @@ static __net_init int ife_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, ife_net_id); + +- return tc_action_net_init(tn, &act_ife_ops); ++ return tc_action_net_init(net, tn, &act_ife_ops); + } + + static void __net_exit ife_exit_net(struct net *net) +diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c +index 18b2fd2ba7d7..a2687dd95a3d 100644 +--- a/net/sched/act_ipt.c ++++ b/net/sched/act_ipt.c +@@ -65,12 +65,13 @@ static int ipt_init_target(struct net *net, struct xt_entry_target *t, + return 0; + } + +-static void ipt_destroy_target(struct xt_entry_target *t) ++static void ipt_destroy_target(struct xt_entry_target *t, struct net *net) + { + struct xt_tgdtor_param par = { + .target = t->u.kernel.target, + .targinfo = t->data, + .family = NFPROTO_IPV4, ++ .net = net, + }; + if (par.target->destroy != NULL) + par.target->destroy(&par); +@@ -82,7 +83,7 @@ static void tcf_ipt_release(struct tc_action *a, int bind) + struct tcf_ipt *ipt = to_ipt(a); + + if (ipt->tcfi_t) { +- ipt_destroy_target(ipt->tcfi_t); ++ ipt_destroy_target(ipt->tcfi_t, a->idrinfo->net); + kfree(ipt->tcfi_t); + } + kfree(ipt->tcfi_tname); +@@ -172,7 +173,7 @@ static int __tcf_ipt_init(struct net *net, unsigned int id, struct nlattr *nla, + + spin_lock_bh(&ipt->tcf_lock); + if (ret != ACT_P_CREATED) { +- ipt_destroy_target(ipt->tcfi_t); ++ ipt_destroy_target(ipt->tcfi_t, net); + kfree(ipt->tcfi_tname); + kfree(ipt->tcfi_t); + } +@@ -337,7 +338,7 @@ static __net_init int ipt_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, ipt_net_id); + +- return tc_action_net_init(tn, &act_ipt_ops); ++ return tc_action_net_init(net, tn, &act_ipt_ops); + } + + static void __net_exit ipt_exit_net(struct net *net) +@@ -387,7 +388,7 @@ static __net_init int xt_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, xt_net_id); + +- return tc_action_net_init(tn, &act_xt_ops); ++ return tc_action_net_init(net, tn, &act_xt_ops); + } + + static void __net_exit xt_exit_net(struct net *net) +diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c +index 6ce8de373f83..529bb064c4a4 100644 +--- a/net/sched/act_mirred.c ++++ b/net/sched/act_mirred.c +@@ -343,7 +343,7 @@ static __net_init int mirred_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, mirred_net_id); + +- return tc_action_net_init(tn, &act_mirred_ops); ++ return tc_action_net_init(net, tn, &act_mirred_ops); + } + + static void __net_exit mirred_exit_net(struct net *net) +diff --git a/net/sched/act_nat.c b/net/sched/act_nat.c +index c365d01b99c8..5a136943af27 100644 +--- a/net/sched/act_nat.c ++++ b/net/sched/act_nat.c +@@ -307,7 +307,7 @@ static __net_init int nat_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, nat_net_id); + +- return tc_action_net_init(tn, &act_nat_ops); ++ return tc_action_net_init(net, tn, &act_nat_ops); + } + + static void __net_exit nat_exit_net(struct net *net) +diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c +index 656b6ada9221..b6f6bfad8b2a 100644 +--- a/net/sched/act_pedit.c ++++ b/net/sched/act_pedit.c +@@ -458,7 +458,7 @@ static __net_init int pedit_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, pedit_net_id); + +- return tc_action_net_init(tn, &act_pedit_ops); ++ return tc_action_net_init(net, tn, &act_pedit_ops); + } + + static void __net_exit pedit_exit_net(struct net *net) +diff --git a/net/sched/act_police.c b/net/sched/act_police.c +index c16127109f21..a7fcc591c241 100644 +--- a/net/sched/act_police.c ++++ b/net/sched/act_police.c +@@ -331,7 +331,7 @@ static __net_init int police_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, police_net_id); + +- return tc_action_net_init(tn, &act_police_ops); ++ return tc_action_net_init(net, tn, &act_police_ops); + } + + static void __net_exit police_exit_net(struct net *net) +diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c +index 64fd1e9818a6..489db1064d5b 100644 +--- a/net/sched/act_sample.c ++++ b/net/sched/act_sample.c +@@ -92,13 +92,16 @@ static int tcf_sample_init(struct net *net, struct nlattr *nla, + tcf_idr_release(*a, bind); + return -ENOMEM; + } +- RCU_INIT_POINTER(s->psample_group, psample_group); ++ rcu_swap_protected(s->psample_group, psample_group, ++ lockdep_is_held(&s->tcf_lock)); + + if (tb[TCA_SAMPLE_TRUNC_SIZE]) { + s->truncate = true; + s->trunc_size = nla_get_u32(tb[TCA_SAMPLE_TRUNC_SIZE]); + } + ++ if (psample_group) ++ psample_group_put(psample_group); + if (ret == ACT_P_CREATED) + tcf_idr_insert(tn, *a); + return ret; +@@ -249,7 +252,7 @@ static __net_init int sample_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, sample_net_id); + +- return tc_action_net_init(tn, &act_sample_ops); ++ return tc_action_net_init(net, tn, &act_sample_ops); + } + + static void __net_exit sample_exit_net(struct net *net) +diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c +index f3ed63aa4111..86d8b66b9928 100644 +--- a/net/sched/act_simple.c ++++ b/net/sched/act_simple.c +@@ -198,7 +198,7 @@ static __net_init int simp_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, simp_net_id); + +- return tc_action_net_init(tn, &act_simp_ops); ++ return tc_action_net_init(net, tn, &act_simp_ops); + } + + static void __net_exit simp_exit_net(struct net *net) +diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c +index 6e749497009e..1a8a49e33320 100644 +--- a/net/sched/act_skbedit.c ++++ b/net/sched/act_skbedit.c +@@ -239,7 +239,7 @@ static __net_init int skbedit_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, skbedit_net_id); + +- return tc_action_net_init(tn, &act_skbedit_ops); ++ return tc_action_net_init(net, tn, &act_skbedit_ops); + } + + static void __net_exit skbedit_exit_net(struct net *net) +diff --git a/net/sched/act_skbmod.c b/net/sched/act_skbmod.c +index d227599f7e73..20ea9d11821b 100644 +--- a/net/sched/act_skbmod.c ++++ b/net/sched/act_skbmod.c +@@ -267,7 +267,7 @@ static __net_init int skbmod_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, skbmod_net_id); + +- return tc_action_net_init(tn, &act_skbmod_ops); ++ return tc_action_net_init(net, tn, &act_skbmod_ops); + } + + static void __net_exit skbmod_exit_net(struct net *net) +diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c +index cd51f2ed55fa..62e22738022d 100644 +--- a/net/sched/act_tunnel_key.c ++++ b/net/sched/act_tunnel_key.c +@@ -324,7 +324,7 @@ static __net_init int tunnel_key_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, tunnel_key_net_id); + +- return tc_action_net_init(tn, &act_tunnel_key_ops); ++ return tc_action_net_init(net, tn, &act_tunnel_key_ops); + } + + static void __net_exit tunnel_key_exit_net(struct net *net) +diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c +index 5c10a0fce35b..c9a3eeb351fa 100644 +--- a/net/sched/act_vlan.c ++++ b/net/sched/act_vlan.c +@@ -271,7 +271,7 @@ static __net_init int vlan_init_net(struct net *net) + { + struct tc_action_net *tn = net_generic(net, vlan_net_id); + +- return tc_action_net_init(tn, &act_vlan_ops); ++ return tc_action_net_init(net, tn, &act_vlan_ops); + } + + static void __net_exit vlan_exit_net(struct net *net) +diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c +index 0ef215061fb5..1b917eaffad8 100644 +--- a/tools/hv/hv_kvp_daemon.c ++++ b/tools/hv/hv_kvp_daemon.c +@@ -867,7 +867,7 @@ kvp_get_ip_info(int family, char *if_name, int op, + int sn_offset = 0; + int error = 0; + char *buffer; +- struct hv_kvp_ipaddr_value *ip_buffer; ++ struct hv_kvp_ipaddr_value *ip_buffer = NULL; + char cidr_mask[5]; /* /xyz */ + int weight; + int i; +diff --git a/virt/kvm/arm/mmio.c b/virt/kvm/arm/mmio.c +index 08443a15e6be..3caee91bca08 100644 +--- a/virt/kvm/arm/mmio.c ++++ b/virt/kvm/arm/mmio.c +@@ -98,6 +98,12 @@ int kvm_handle_mmio_return(struct kvm_vcpu *vcpu, struct kvm_run *run) + unsigned int len; + int mask; + ++ /* Detect an already handled MMIO return */ ++ if (unlikely(!vcpu->mmio_needed)) ++ return 0; ++ ++ vcpu->mmio_needed = 0; ++ + if (!run->mmio.is_write) { + len = run->mmio.len; + if (len > sizeof(unsigned long)) +@@ -200,6 +206,7 @@ int io_mem_abort(struct kvm_vcpu *vcpu, struct kvm_run *run, + run->mmio.is_write = is_write; + run->mmio.phys_addr = fault_ipa; + run->mmio.len = len; ++ vcpu->mmio_needed = 1; + + if (!ret) { + /* We handled the access successfully in the kernel. */
