Linux kernel documentation tree maintained by Jonathan Corbet http://mirrors.hust.edu.cn/git/lwn.git/atom?h=docs-5.13 2021-03-04T19:24:47+00:00 2021-03-04T19:24:47+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-03-04T19:24:47+00:00 urn:sha1:c5a58f877ca645a3303f7a57476f2de837fdb97a Pull xen fixes from Juergen Gross: "Two security issues (XSA-367 and XSA-369)" * tag 'for-linus-5.12b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: fix p2m size in dom0 for disabled memory hotplug case xen-netback: respect gnttab_map_refs()'s return value Xen/gnttab: handle p2m update errors on a per-slot basis 2021-03-03T07:32:11+00:00 Jan Beulich jbeulich@suse.com 2021-02-25T15:35:15+00:00 urn:sha1:2991397d23ec597405b116d96de3813420bdcbc3 Commit 3194a1746e8a ("xen-netback: don't "handle" error by BUG()") dropped respective a BUG_ON() without noticing that with this the variable's value wouldn't be consumed anymore. With gnttab_set_map_op() setting all status fields to a non-zero value, in case of an error no slot should have a status of GNTST_okay (zero). This is part of XSA-367. Cc: <stable@vger.kernel.org> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/d933f495-619a-0086-5fb4-1ec3cf81a8fc@suse.com Signed-off-by: Juergen Gross <jgross@suse.com> 2021-02-25T20:21:08+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-02-25T20:21:08+00:00 urn:sha1:ffc1759676bed0bff046427dd7d00cb68660190d Pull virtio updates from Michael Tsirkin: - new vdpa features to allow creation and deletion of new devices - virtio-blk support per-device queue depth - fixes, cleanups all over the place * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (31 commits) virtio-input: add multi-touch support virtio_mmio: fix one typo vdpa/mlx5: fix param validation in mlx5_vdpa_get_config() virtio_net: Fix fall-through warnings for Clang virtio_input: Prevent EV_MSC/MSC_TIMESTAMP loop storm for MT. virtio-blk: support per-device queue depth virtio_vdpa: don't warn when fail to disable vq virtio-pci: introduce modern device module virito-pci-modern: rename map_capability() to vp_modern_map_capability() virtio-pci-modern: introduce helper to get notification offset virtio-pci-modern: introduce helper for getting queue nums virtio-pci-modern: introduce helper for setting/geting queue size virtio-pci-modern: introduce helper to set/get queue_enable virtio-pci-modern: introduce vp_modern_queue_address() virtio-pci-modern: introduce vp_modern_set_queue_vector() virtio-pci-modern: introduce vp_modern_generation() virtio-pci-modern: introduce helpers for setting and getting features virtio-pci-modern: introduce helpers for setting and getting status virtio-pci-modern: introduce helper to set config vector virtio-pci-modern: introduce vp_modern_remove() ... 2021-02-25T20:06:25+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-02-25T20:06:25+00:00 urn:sha1:5ad3dbab569ac39e88fae31690401895c37368b6 Pull networking fixes from Jakub Kicinski: "Rather small batch this time. Current release - regressions: - bcm63xx_enet: fix sporadic kernel panic due to queue length mis-accounting Current release - new code bugs: - bcm4908_enet: fix RX path possible mem leak - bcm4908_enet: fix NAPI poll returned value - stmmac: fix missing spin_lock_init in visconti_eth_dwmac_probe() - sched: cls_flower: validate ct_state for invalid and reply flags Previous releases - regressions: - net: introduce CAN specific pointer in the struct net_device to prevent mis-interpreting memory - phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081 - psample: fix netlink skb length with tunnel info Previous releases - always broken: - icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending - wireguard: device: do not generate ICMP for non-IP packets - mptcp: provide subflow aware release function to avoid a mem leak - hsr: add support for EntryForgetTime - r8169: fix jumbo packet handling on RTL8168e - octeontx2-af: fix an off by one in rvu_dbg_qsize_write() - i40e: fix flow for IPv6 next header (extension header) - phy: icplus: call phy_restore_page() when phy_select_page() fails - dpaa_eth: fix the access method for the dpaa_napi_portal" * tag 'net-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits) r8169: fix jumbo packet handling on RTL8168e net: phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081 net: psample: Fix netlink skb length with tunnel info net: broadcom: bcm4908_enet: fix NAPI poll returned value net: broadcom: bcm4908_enet: fix RX path possible mem leak net: hsr: add support for EntryForgetTime net: dsa: sja1105: Remove unneeded cast in sja1105_crc32() ibmvnic: fix a race between open and reset net: stmmac: Fix missing spin_lock_init in visconti_eth_dwmac_probe() net: introduce CAN specific pointer in the struct net_device net: usb: qmi_wwan: support ZTE P685M modem wireguard: kconfig: use arm chacha even with no neon wireguard: queueing: get rid of per-peer ring buffers wireguard: device: do not generate ICMP for non-IP packets wireguard: peer: put frequently used members above cache lines wireguard: selftests: test multiple parallel streams wireguard: socket: remove bogus __be32 annotation wireguard: avoid double unlikely() notation when using IS_ERR() net: qrtr: Fix memory leak in qrtr_tun_open vxlan: move debug check after netdev unregister ... 2021-02-25T18:17:31+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-02-25T18:17:31+00:00 urn:sha1:6fbd6cf85a3be127454a1ad58525a3adcf8612ab Pull Kbuild updates from Masahiro Yamada: - Fix false-positive build warnings for ARCH=ia64 builds - Optimize dictionary size for module compression with xz - Check the compiler and linker versions in Kconfig - Fix misuse of extra-y - Support DWARF v5 debug info - Clamp SUBLEVEL to 255 because stable releases 4.4.x and 4.9.x exceeded the limit - Add generic syscall{tbl,hdr}.sh for cleanups across arches - Minor cleanups of genksyms - Minor cleanups of Kconfig * tag 'kbuild-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (38 commits) initramfs: Remove redundant dependency of RD_ZSTD on BLK_DEV_INITRD kbuild: remove deprecated 'always' and 'hostprogs-y/m' kbuild: parse C= and M= before changing the working directory kbuild: reuse this-makefile to define abs_srctree kconfig: unify rule of config, menuconfig, nconfig, gconfig, xconfig kconfig: omit --oldaskconfig option for 'make config' kconfig: fix 'invalid option' for help option kconfig: remove dead code in conf_askvalue() kconfig: clean up nested if-conditionals in check_conf() kconfig: Remove duplicate call to sym_get_string_value() Makefile: Remove # characters from compiler string Makefile: reuse CC_VERSION_TEXT kbuild: check the minimum linker version in Kconfig kbuild: remove ld-version macro scripts: add generic syscallhdr.sh scripts: add generic syscalltbl.sh arch: syscalls: remove $(srctree)/ prefix from syscall tables arch: syscalls: add missing FORCE and fix 'targets' to make if_changed work gen_compile_commands: prune some directories kbuild: simplify access to the kernel's version ... 2021-02-25T17:56:08+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-02-25T17:56:08+00:00 urn:sha1:5b47b10e8fb92f8beca6aa8a7d97fc84e090384c Pull PCI updates from Bjorn Helgaas: "Enumeration: - Remove unnecessary locking around _OSC (Bjorn Helgaas) - Clarify message about _OSC failure (Bjorn Helgaas) - Remove notification of PCIe bandwidth changes (Bjorn Helgaas) - Tidy checking of syscall user config accessors (Heiner Kallweit) Resource management: - Decline to resize resources if boot config must be preserved (Ard Biesheuvel) - Fix pci_register_io_range() memory leak (Geert Uytterhoeven) Error handling (Keith Busch): - Clear error status from the correct device - Retain error recovery status so drivers can use it after reset - Log the type of Port (Root or Switch Downstream) that we reset - Always request a reset for Downstream Ports in frozen state Endpoint framework and NTB (Kishon Vijay Abraham I): - Make *_get_first_free_bar() take into account 64 bit BAR - Add helper API to get the 'next' unreserved BAR - Make *_free_bar() return error codes on failure - Remove unused pci_epf_match_device() - Add support to associate secondary EPC with EPF - Add support in configfs to associate two EPCs with EPF - Add pci_epc_ops to map MSI IRQ - Add pci_epf_ops to expose function-specific attrs - Allow user to create sub-directory of 'EPF Device' directory - Implement ->msi_map_irq() ops for cadence - Configure LM_EP_FUNC_CFG based on epc->function_num_map for cadence - Add EP function driver to provide NTB functionality - Add support for EPF PCI Non-Transparent Bridge - Add specification for PCI NTB function device - Add PCI endpoint NTB function user guide - Add configfs binding documentation for pci-ntb endpoint function Broadcom STB PCIe controller driver: - Add support for BCM4908 and external PERST# signal controller (Rafał Miłecki) Cadence PCIe controller driver: - Retrain Link to work around Gen2 training defect (Nadeem Athani) - Fix merge botch in cdns_pcie_host_map_dma_ranges() (Krzysztof Wilczyński) Freescale Layerscape PCIe controller driver: - Add LX2160A rev2 EP mode support (Hou Zhiqiang) - Convert to builtin_platform_driver() (Michael Walle) MediaTek PCIe controller driver: - Fix OF node reference leak (Krzysztof Wilczyński) Microchip PolarFlare PCIe controller driver: - Add Microchip PolarFire PCIe controller driver (Daire McNamara) Qualcomm PCIe controller driver: - Use PHY_REFCLK_USE_PAD only for ipq8064 (Ansuel Smith) - Add support for ddrss_sf_tbu clock for sm8250 (Dmitry Baryshkov) Renesas R-Car PCIe controller driver: - Drop PCIE_RCAR config option (Lad Prabhakar) - Always allocate MSI addresses in 32bit space (Marek Vasut) Rockchip PCIe controller driver: - Add FriendlyARM NanoPi M4B DT binding (Chen-Yu Tsai) - Make 'ep-gpios' DT property optional (Chen-Yu Tsai) Synopsys DesignWare PCIe controller driver: - Work around ECRC configuration hardware defect (Vidya Sagar) - Drop support for config space in DT 'ranges' (Rob Herring) - Change size to u64 for EP outbound iATU (Shradha Todi) - Add upper limit address for outbound iATU (Shradha Todi) - Make dw_pcie ops optional (Jisheng Zhang) - Remove unnecessary dw_pcie_ops from al driver (Jisheng Zhang) Xilinx Versal CPM PCIe controller driver: - Fix OF node reference leak (Pan Bian) Miscellaneous: - Remove tango host controller driver (Arnd Bergmann) - Remove IRQ handler & data together (altera-msi, brcmstb, dwc) (Martin Kaiser) - Fix xgene-msi race in installing chained IRQ handler (Martin Kaiser) - Apply CONFIG_PCI_DEBUG to entire drivers/pci hierarchy (Junhao He) - Fix pci-bridge-emul array overruns (Russell King) - Remove obsolete uses of WARN_ON(in_interrupt()) (Sebastian Andrzej Siewior)" * tag 'pci-v5.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (69 commits) PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064 PCI: qcom: Add support for ddrss_sf_tbu clock dt-bindings: PCI: qcom: Document ddrss_sf_tbu clock for sm8250 PCI: al: Remove useless dw_pcie_ops PCI: dwc: Don't assume the ops in dw_pcie always exist PCI: dwc: Add upper limit address for outbound iATU PCI: dwc: Change size to u64 for EP outbound iATU PCI: dwc: Drop support for config space in 'ranges' PCI: layerscape: Convert to builtin_platform_driver() PCI: layerscape: Add LX2160A rev2 EP mode support dt-bindings: PCI: layerscape: Add LX2160A rev2 compatible strings PCI: dwc: Work around ECRC configuration issue PCI/portdrv: Report reset for frozen channel PCI/AER: Specify the type of Port that was reset PCI/ERR: Retain status from error notification PCI/AER: Clear AER status from Root Port when resetting Downstream Port PCI/ERR: Clear status of the reporting device dt-bindings: arm: rockchip: Add FriendlyARM NanoPi M4B PCI: rockchip: Make 'ep-gpios' DT property optional Documentation: PCI: Add PCI endpoint NTB function user guide ... 2021-02-25T17:55:16+00:00 Heiner Kallweit hkallweit1@gmail.com 2021-02-25T15:05:19+00:00 urn:sha1:6cf739131a15e4177e58a1b4f2bede9d5da78552 Josef reported [0] that using jumbo packets fails on RTL8168e. Aligning the values for register MaxTxPacketSize with the vendor driver fixes the problem. [0] https://bugzilla.kernel.org/show_bug.cgi?id=211827 Fixes: d58d46b5d851 ("r8169: jumbo fixes.") Reported-by: Josef Oškera <joskera@redhat.com> Tested-by: Josef Oškera <joskera@redhat.com> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/b15ddef7-0d50-4320-18f4-6a3f86fbfd3e@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2021-02-25T17:51:31+00:00 Christian Melki christian.melki@t2data.com 2021-02-24T20:55:36+00:00 urn:sha1:764d31cacfe48440745c4bbb55a62ac9471c9f19 Following a similar reinstate for the KSZ9031. Older kernels would use the genphy_soft_reset if the PHY did not implement a .soft_reset. Bluntly removing that default may expose a lot of situations where various PHYs/board implementations won't recover on various changes. Like with this implementation during a 4.9.x to 5.4.x LTS transition. I think it's a good thing to remove unwanted soft resets but wonder if it did open a can of worms? Atleast this fixes one iMX6 FEC/RMII/8081 combo. Fixes: 6e2d85ec0559 ("net: phy: Stop with excessive soft reset") Signed-off-by: Christian Melki <christian.melki@t2data.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20210224205536.9349-1-christian.melki@t2data.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2021-02-25T17:46:39+00:00 Rafał Miłecki rafal@milecki.pl 2021-02-24T15:18:42+00:00 urn:sha1:4d9274cee40b6a20dd6148c6c81c6733c2678cbc Missing increment was resulting in poll function always returning 0 instead of amount of processed packets. Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver") Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20210224151842.2419-2-zajec5@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 2021-02-25T17:45:01+00:00 Rafał Miłecki rafal@milecki.pl 2021-02-24T15:18:41+00:00 urn:sha1:4dc7f09b8becfa35a55430a49d95acf19f996e6b After filling RX ring slot with new skb it's required to free old skb. Immediately on error or later in the net subsystem. Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver") Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20210224151842.2419-1-zajec5@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>