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8 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
| 23ea704e18 |
Merge tag 'v4.19.325-cip132' of https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip into android13-4.19-kona
version 4.19.325-cip132 * tag 'v4.19.325-cip132' of https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip: CIP: Bump version suffix to -cip132 after merge from cip/linux-4.19.y-st tree Update localversion-st, tree is up-to-date with 5.10.254. x86/CPU: Fix FPDSS on Zen1 seg6: separate dst_cache for input and output paths in seg6 lwtunnel netfilter: nft_ct: fix use-after-free in timeout object destroy apparmor: fix differential encoding verification apparmor: fix missing bounds check on DEFAULT table in verify_dfa() ext4: convert inline data to extents when truncate exceeds inline size virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false ipv6: fix NULL pointer deref in ip6_rt_get_dev_rcu() crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl crypto: authencesn - Fix src offset when decrypting in-place crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption crypto: authenc - use memcpy_sglist() instead of null skcipher crypto: algif_aead - snapshot IV for async AEAD requests crypto: algif_aead - Revert to operating out-of-place crypto: algif_aead - use memcpy_sglist() instead of null skcipher crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c Buffer overflow in drivers/xen/sys-hypervisor.c xen/privcmd: fix double free via VMA splitting crypto: algif_aead - Fix minimum RX size check for decryption crypto: scatterwalk - Backport memcpy_sglist() batman-adv: avoid OGM aggregation when skb tailroom is insufficient device property: Check fwnode->secondary when finding properties device property: Check fwnode->secondary in fwnode_graph_get_next_endpoint() device property: Retrieve fwnode from of_node via accessor media: device property: Return true in fwnode_device_is_available for NULL ops ext4: fix the might_sleep() warnings in kvfree() mm/huge_memory: fix folio isn't locked in softleaf_to_folio() usb: gadget: u_ether: Fix race between gether_disconnect and eth_stop usb: gadget: f_hid: move list and spinlock inits from bind to alloc net: rfkill: prevent unlimited numbers of rfkill events from being created cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path cpufreq: governor: Free dbs_data directly when gov->init() fails xen/privcmd: unregister xenstore notifier on module exit rxrpc: Fix key/keyring checks in setsockopt(RXRPC_SECURITY_KEY/KEYRING) net: stmmac: fix integer underflow in chain mode net: qualcomm: qca_uart: report the consumed byte on RX skb allocation failure mmc: vub300: fix NULL-deref on disconnect net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit() batman-adv: reject oversized global TT response buffers arm64: dts: hisilicon: hi3798cv200: Add missing dma-ranges arm64: dts: hisilicon: poplar: Correct PCIe reset GPIO polarity wifi: brcmsmac: Fix dma_free_coherent() size tipc: fix bc_ackers underflow on duplicate GRP_ACK_MSG apparmor: fix unprivileged local user can do privileged policy management apparmor: Fix double free of ns_name in aa_replace_profiles() apparmor: fix side-effect bug in match_char() macro usage apparmor: fix: limit the number of levels of policy namespaces apparmor: replace recursive profile removal with iterative approach apparmor: fix memory leak in verify_header apparmor: validate DFA start states are in bounds in unpack_pdb mm/rmap: fix two comments related to huge_pmd_unshare() mm/hugetlb: fix two comments related to huge_pmd_unshare() mm/hugetlb: make detecting shared pte more reliable Input: uinput - take event lock when submitting FF request "event" Input: uinput - fix circular locking dependency with ff-core xfrm_user: fix info leak in build_report() wifi: rt2x00usb: fix devres lifetime usb: gadget: f_uac1_legacy: validate control request size usb: gadget: dummy_hcd: fix premature URB completion when ZLP follows partial transfer USB: dummy-hcd: Fix locking/synchronization error vxlan: validate ND option lengths in vxlan_na_create comedi: me4000: Fix potential overrun of firmware buffer comedi: me_daq: Fix potential overrun of firmware buffer comedi: ni_atmio16d: Fix invalid clean-up after failed attach comedi: Reinit dev->spinlock between attachments to low-level drivers comedi: dt2815: add hardware detection to prevent crash bridge: br_nd_send: validate ND option lengths usb: ulpi: fix double free in ulpi_register_interface() error path usb: quirks: add DELAY_INIT quirk for another Silicon Motion flash drive iio: gyro: mpu3050: Fix out-of-sequence free_irq() iio: gyro: mpu3050: Move iio_device_register() to correct location iio: gyro: mpu3050: Fix irq resource leak iio: gyro: mpu3050: Fix incorrect free_irq() variable Input: xpad - add support for Razer Wolverine V3 Pro USB: core: add NO_LPM quirk for Razer Kiyo Pro webcam USB: serial: option: add support for Rolling Wireless RW135R-GL USB: serial: io_edgeport: add support for Blackbox IC135A drm/ast: dp501: Fix initialization of SCU2C MIPS: Fix the GCC version check for `__multi3' workaround Bluetooth: SMP: force responder MITM requirements before building the pairing response Bluetooth: SMP: derive legacy responder STK authentication from MITM state ALSA: ctxfi: Fix missing SPDIFI1 index handling ALSA: caiaq: fix stack out-of-bounds read in init_card USB: serial: option: add MeiG Smart SRM825WN drm/ioc32: stop speculation on the drm_compat_ioctl path media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar Revert "media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar" drm/vmwgfx: Add seqno waiter for sync_files Revert "drm/vmwgfx: Add seqno waiter for sync_files" ipv6: avoid overflows in ip6_datagram_send_ctl() net/sched: cls_flow: fix NULL pointer dereference on shared blocks net/sched: cls_fw: fix NULL pointer dereference on shared blocks net/x25: Fix overflow when accumulating packets net/x25: Fix potential double free of skb net: macb: properly unregister fixed rate clocks net: macb: fix clk handling on PCI glue driver removal Bluetooth: MGMT: validate LTK enc_size on load netfilter: x_tables: restrict xt_check_match/xt_check_target extensions for NFPROTO_ARP netfilter: ctnetlink: zero expect NAT fields when CTA_EXPECT_NAT absent netfilter: nf_conntrack_helper: pass helper to expect cleanup netfilter: ipset: use nla_strcmp for IPSET_ATTR_NAME attr netfilter: x_tables: ensure names are nul-terminated netfilter: nfnetlink_log: account for netlink header size net: ipv6: flowlabel: defer exclusive option free until RCU teardown bpf: Fix regsafe() for pointers to packet net: xilinx: axienet: Correct BD length masks to match AXIDMA IP spec ipv6: prevent possible UaF in addrconf_permanent_addr() net/sched: sch_hfsc: fix divide-by-zero in rtsc_min() bridge: br_nd_send: linearize skb before parsing ND options ip6_tunnel: clear skb2->cb[] in ip4ip6_err() ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() tg3: Fix race for querying speed/duplex net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak crypto: af-alg - fix NULL pointer dereference in scatterwalk HID: multitouch: Check to ensure report responses match the request atm: lec: fix use-after-free in sock_def_readable() HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq dmaengine: xilinx_dma: Fix reset related timeout with two-channel AXIDMA dmaengine: xilinx_dma: Program interrupt delay timeout btrfs: fix lost error when running device stats on multiple devices fs btrfs: fix super block offset in error message in btrfs_validate_super() dmaengine: xilinx: xilinx_dma: Fix residue calculation for cyclic DMA dmaengine: xilinx: xilinx_dma: Fix dma_device directions ext4: reject mount if bigalloc with s_first_data_block != 0 ext4: avoid allocate block from corrupted group in ext4_mb_find_by_goal() ext4: make recently_deleted() properly work with lazy itable initialization scsi: ses: Handle positive SCSI error from ses_recv_diag() scsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done() alarmtimer: Fix argument order in alarm_timer_forward() cpufreq: conservative: Reset requested_freq on limits change s390/barrier: Make array_index_mask_nospec() __always_inline sysctl: fix uninitialized variable in proc_do_large_bitmap ACPICA: Allow address_space_handler Install and _REG execution as 2 separate steps ACPICA: include/acpi/acpixf.h: Fix indentation drm/i915/gmbus: fix spurious timeout on 512-byte burst reads scsi: scsi_transport_sas: Fix the maximum channel scanning issue RDMA/rw: Fall back to direct SGE on MR pool exhaustion net: macb: use the current queue number for stats netfilter: nf_conntrack_sip: fix use of uninitialized rtp_addr in process_sdp netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() netfilter: nfnetlink_log: fix uninitialized padding leak in NFULA_PAYLOAD Bluetooth: L2CAP: Fix ERTM re-init and zero pdu_len infinite loop net: fix fanout UAF in packet_release() via NETDEV_UP race rtnetlink: count IFLA_INFO_SLAVE_KIND in if_nlmsg_size openvswitch: validate MPLS set/set_masked payload length net: openvswitch: Avoid releasing netdev before teardown completes pinctrl: mediatek: common: Fix probe failure for devices without EINT Bluetooth: L2CAP: Fix null-ptr-deref on l2cap_sock_ready_cb Bluetooth: hci_ll: Fix firmware leak on error path Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv() af_key: validate families in pfkey_send_migrate() xfrm: call xdo_dev_state_delete during state update dma-buf: Include ioctl.h in UAPI header xen/privcmd: restrict usage in unprivileged domU i2c: fsi: Fix a potential leak in fsi_i2c_probe() icmp: fix NULL pointer dereference in icmp_tag_validation() nfnetlink_osf: validate individual option lengths in fingerprints net: bonding: fix NULL deref in bond_debug_rlb_hash_show udp_tunnel: fix NULL deref caused by udp_sock_create6 when CONFIG_IPV6=n net: macb: fix uninitialized rx_fs_lock wifi: wlcore: Return -ENOMEM instead of -EAGAIN if there is not enough headroom wifi: mac80211: fix NULL deref in mesh_matches_local() PM: runtime: Fix a race condition related to device removal net: bcmgenet: increase WoL poll timeout netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() netfilter: xt_time: use unsigned int for monthday bit shift netfilter: xt_CT: drop pending enqueued packets on template removal netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp() netfilter: ctnetlink: fix use-after-free in ctnetlink_dump_exp_ct() netfilter: ctnetlink: remove refcounting in expectation dumpers net/rose: fix NULL pointer dereference in rose_transmit_link on reconnect Bluetooth: HIDP: Fix possible UAF Bluetooth: SMP: make SM/PER/KDU/BI-04-C happy Bluetooth: LE L2CAP: Disconnect if sum of payload sizes exceed SDU Bluetooth: LE L2CAP: Disconnect if received packet's SDU exceeds IMTU staging: rtl8723bs: fix null dereference in find_network net/tcp-md5: Fix MAC comparison to be constant-time ALSA: pcm: fix wait_time calculations can: gs_usb: gs_can_open(): always configure bitrates before starting device usb: gadget: f_tcm: Fix NULL pointer dereferences in nexus handling nfsd: fix heap overflow in NFSv4.0 LOCK replay cache arm64: mm: Add PTE_DIRTY back to PAGE_KERNEL* to fix kexec/hibernation smb: client: fix iface port assignment in parse_server_interfaces iio: light: bh1780: fix PM runtime leak on error path tracing: Fix syscall events activation by ensuring refcount hits zero s390/xor: Fix xor_xc_2() inline assembly constraints drm/amd/display: Use GFP_ATOMIC in dc_create_stream_for_sink smb: client: Don't log plaintext credentials in cifs_set_cifscreds wifi: mac80211: fix NULL pointer dereference in mesh_rx_csa_frame() wifi: libertas: fix use-after-free in lbs_free_adapter() ext4: fix dirtyclusters double decrement on fs shutdown ext4: drop extent cache when splitting extent fails drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl() net: Handle napi_schedule() calls from non-interrupt drm/radeon: apply state adjust rules to some additional HAINAN vairants serial: 8250: Add late synchronize_irq() to shutdown to handle DW UART BUSY Bluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access net: macb: fix use-after-free access to PTP clock nvdimm/bus: Fix potential use after free in asynchronous initialization iio: chemical: bme680: Fix measurement wait duration calculation iio: potentiometer: mcp4131: fix double application of wiper shift iio: dac: ds4424: reject -128 RAW value btrfs: abort transaction on failure to update root in the received subvol ioctl x86/apic: Disable x2apic on resume if the kernel expects so drm/amdgpu: Fix use-after-free race in VM acquire net: ethernet: arc: emac: quiesce interrupts before requesting IRQ net: ncsi: fix skb leak in error paths parisc: Fix initial page table creation for boot nouveau/dpcd: return EBUSY for aux xfer if the device is asleep parisc: Increase initial mapping to 64 MB with KALLSYMS batman-adv: Avoid double-rtnl_lock ELP metric worker media: dvb-net: fix OOB access in ULE extension header tables staging: rtl8723bs: fix potential out-of-bounds read in rtw_restruct_wmm_ie libceph: Fix potential out-of-bounds access in ceph_handle_auth_reply() mmc: mmci: Fix device_node reference leak in of_get_dml_pipe_index() usb: image: mdc800: kill download URB on timeout usb: mdc800: handle signal and read racing usb: class: cdc-wdm: fix reordering issue in read code path USB: usbcore: Introduce usb_bulk_msg_killable() usb: misc: uss720: properly clean up reference in uss720_probe() usb: yurex: fix race in probe usb: xhci: Fix memory leak in xhci_disable_slot() usb/core/quirks: Add Huawei ME906S-device to wakeup quirk net: usb: lan78xx: skip LTM configuration for LAN7850 net: usb: lan78xx: fix silent drop of packets with checksum errors cgroup: fix race between task migration and iteration e1000/e1000e: Fix leak in DMA error cleanup i40e: fix src IP mask checks and memcpy argument names in cloud filter nvme-pci: Fix slab-out-of-bounds in nvme_dbbuf_set sched: idle: Make skipping governor callbacks more consistent netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() netfilter: nfnetlink_queue: fix entry leak in bridge verdict error path netfilter: x_tables: guard option walkers against 1-byte tail reads can: hi311x: hi3110_open(): add check for hi3110_power_enable() return value serial: caif: hold tty->link reference in ldisc_open and ser_release net/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit powerpc: 83xx: km83xx: Fix keymile vendor prefix remoteproc: sysmon: Correct subsys_name_len type in QMI request powerpc/uaccess: Fix inline assembly for clang build on PPC32 scsi: ses: Fix devices attaching to different hosts ACPI: OSI: Add DMI quirk for Acer Aspire One D255 unshare: fix unshare_fs() handling ACPI: PM: Save NVS memory on Lenovo G70-35 scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled net: bridge: fix nd_tbl NULL dereference when IPv6 is disabled nfc: rawsock: cancel tx_work before socket teardown nfc: nci: clear NCI_DATA_EXCHANGE before calling completion callback nfc: nci: free skb on nci_transceive early error paths net: nfc: nci: Fix zero-length proprietary notifications amd-xgbe: fix sleep while atomic on suspend/resume xen/acpi-processor: fix _CST detection using undersized evaluation buffer wifi: wlcore: Fix a locking bug can: bcm: fix locking for bcm_op runtime updates atm: lec: fix null-ptr-deref in lec_arp_clear_vccs platform/x86: thinkpad_acpi: Fix errors reading battery thresholds drbd: fix "LOGIC BUG" in drbd_al_begin_io_nonblock() Squashfs: check metadata block offset is within range wifi: radiotap: reject radiotap with unknown bits ALSA: usb-audio: Use correct version for UAC3 header validation can: ucan: Fix infinite loop from zero-length messages can: ems_usb: ems_usb_read_bulk_callback(): check the proper length of a message net: usb: pegasus: validate USB endpoints net: usb: kalmia: validate USB endpoints net: usb: kaweth: validate USB endpoints nfc: pn533: properly drop the usb interface reference on disconnect media: dvb-core: fix wrong reinitialization of ringbuffer on reopen net: arcnet: com20020-pci: fix support for 2.5Mbit cards ALSA: hda/conexant: Add quirk for HP ZBook Studio G4 clk: tegra: tegra124-emc: fix device leak on set_rate() drm/tegra: dsi: fix device leak on probe ARM: omap2: Fix reference count leaks in omap_control_init() ARM: OMAP2+: add missing of_node_put before break and return ARM: clean up the memset64() C wrapper Change-Id: If58eb7898e90d049cd97232a5f2c1fc971671b1f |
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| 77c55edd80 |
dma-buf: Include ioctl.h in UAPI header
[ Upstream commit a116bac87118903925108e57781bbfc7a7eea27b ] include/uapi/linux/dma-buf.h uses several macros from ioctl.h to define its ioctl commands. However, it does not include ioctl.h itself. So, if userspace source code tries to include the dma-buf.h file without including ioctl.h, it can result in build failures. Therefore, include ioctl.h in the dma-buf UAPI header. Signed-off-by: Isaac J. Manjarres <isaacmanjarres@google.com> Reviewed-by: T.J. Mercier <tjmercier@google.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20260303002309.1401849-1-isaacmanjarres@google.com Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Ulrich Hecht <uli@kernel.org> |
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| 7791a8c24e |
UPSTREAM: dma-buf: fix use of DMA_BUF_SET_NAME_{A,B} in userspace
The typedefs u32 and u64 are not available in userspace. Thus user get
an error he try to use DMA_BUF_SET_NAME_A or DMA_BUF_SET_NAME_B:
$ gcc -Wall -c -MMD -c -o ioctls_list.o ioctls_list.c
In file included from /usr/include/x86_64-linux-gnu/asm/ioctl.h:1,
from /usr/include/linux/ioctl.h:5,
from /usr/include/asm-generic/ioctls.h:5,
from ioctls_list.c:11:
ioctls_list.c:463:29: error: ‘u32’ undeclared here (not in a function)
463 | { "DMA_BUF_SET_NAME_A", DMA_BUF_SET_NAME_A, -1, -1 }, // linux/dma-buf.h
| ^~~~~~~~~~~~~~~~~~
ioctls_list.c:464:29: error: ‘u64’ undeclared here (not in a function)
464 | { "DMA_BUF_SET_NAME_B", DMA_BUF_SET_NAME_B, -1, -1 }, // linux/dma-buf.h
| ^~~~~~~~~~~~~~~~~~
The issue was initially reported here[1].
[1]: https://github.com/jerome-pouiller/ioctl/pull/14
Bug: 254441685
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Fixes: a5bff92eaac4 ("dma-buf: Fix SET_NAME ioctl uapi")
CC: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220517072708.245265-1-Jerome.Pouiller@silabs.com
Signed-off-by: Christian König <christian.koenig@amd.com>
(cherry picked from commit 7c3e9fcad9c7d8bb5d69a576044fb16b1d2e8a01)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: If83a6fecc7ef885ca070214b4c03d317851f207a
|
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| 06931a5d14 |
UPSTREAM: dma-buf: Fix SET_NAME ioctl uapi
The uapi is the same on 32 and 64 bit, but the number isn't. Everyone who botched this please re-read: https://www.kernel.org/doc/html/v5.4-preprc-cpu/ioctl/botching-up-ioctls.html Also, the type argument for the ioctl macros is for the type the void __user *arg pointer points at, which in this case would be the variable-sized char[] of a 0 terminated string. So this was botched in more than just the usual ways. Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Chenbo Feng <fengc@google.com> Cc: Greg Hackmann <ghackmann@google.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Cc: minchan@kernel.org Cc: surenb@google.com Cc: jenhaochen@google.com Cc: Martin Liu <liumartin@google.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Tested-by: Martin Liu <liumartin@google.com> Reviewed-by: Martin Liu <liumartin@google.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> [sumits: updated some checkpatch fixes, corrected author email] Link: https://patchwork.freedesktop.org/patch/msgid/20200407133002.3486387-1-daniel.vetter@ffwll.ch (cherry picked from commit a5bff92eaac45bdf6221badf9505c26792fdf99e) Bug: 147134066 Signed-off-by: Alistair Delva <adelva@google.com> Change-Id: Iab0c1b47e92c765bd885acb6cc5cb0f2f9b07c3c |
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| 80933739d5 |
ANDROID: GKI: dma-buf: Add support for XXX_cpu_access_umapped ops
Userspace clients will be able to restrict cache maintenance to only the subset of the dma-buf which is mmap(ed) by setting the DMA_BUF_SYNC_USER_MAPPED flag when calling the DMA_BUF_IOCTL_SYNC IOCT. Signed-off-by: Swathi Sridhar <swatsrid@codeaurora.org> Bug: 150611569 Test: build (cherry-picked from |
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| bf93f26d49 |
UPSTREAM: dma-buf: add DMA_BUF_SET_NAME ioctls
This patch adds complimentary DMA_BUF_SET_NAME ioctls, which lets userspace processes attach a free-form name to each buffer. This information can be extremely helpful for tracking and accounting shared buffers. For example, on Android, we know what each buffer will be used for at allocation time: GL, multimedia, camera, etc. The userspace allocator can use DMA_BUF_SET_NAME to associate that information with the buffer, so we can later give developers a breakdown of how much memory they're allocating for graphics, camera, etc. Signed-off-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: Chenbo Feng <fengc@google.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190613223408.139221-3-fengc@google.com (cherry picked from commit bb2bb903042517b8fb17b2bc21e00512f2dcac01) Bug: 135613055 Test: run dmabufinfo_test.cpp and check the name is showed up in /proc/pid/fd Change-Id: Ib7f227b5e730c7ecfade14ad596ba3889eab1b0b |
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| e2be04c7f9 |
License cleanup: add SPDX license identifier to uapi header files with a license
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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| c11e391da2 |
dma-buf: Add ioctls to allow userspace to flush
The userspace might need some sort of cache coherency management e.g. when CPU
and GPU domains are being accessed through dma-buf at the same time. To
circumvent this problem there are begin/end coherency markers, that forward
directly to existing dma-buf device drivers vfunc hooks. Userspace can make use
of those markers through the DMA_BUF_IOCTL_SYNC ioctl. The sequence would be
used like following:
- mmap dma-buf fd
- for each drawing/upload cycle in CPU 1. SYNC_START ioctl, 2. read/write
to mmap area 3. SYNC_END ioctl. This can be repeated as often as you
want (with the new data being consumed by the GPU or say scanout device)
- munmap once you don't need the buffer any more
v2 (Tiago): Fix header file type names (u64 -> __u64)
v3 (Tiago): Add documentation. Use enum dma_buf_sync_flags to the begin/end
dma-buf functions. Check for overflows in start/length.
v4 (Tiago): use 2d regions for sync.
v5 (Tiago): forget about 2d regions (v4); use _IOW in DMA_BUF_IOCTL_SYNC and
remove range information from struct dma_buf_sync.
v6 (Tiago): use __u64 structured padded flags instead enum. Adjust
documentation about the recommendation on using sync ioctls.
v7 (Tiago): Alex' nit on flags definition and being even more wording in the
doc about sync usage.
v9 (Tiago): remove useless is_dma_buf_file check. Fix sync.flags conditionals
and its mask order check. Add <linux/types.h> include in dma-buf.h.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1455228291-29640-1-git-send-email-tiago.vignatti@intel.com
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