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Nikhil Rao 5056d23893 dmaengine: idxd: add a write() method for applications to submit work 
commit 6827738dc6 upstream.

After the patch to restrict the use of mmap() to CAP_SYS_RAWIO for
the currently existing devices, most applications can no longer make
use of the accelerators as in production "you don't run things as root".

To keep the DSA and IAA accelerators usable, hook up a write() method
so that applications can still submit work. In the write method,
sufficient input validation is performed to avoid the security issue
that required the mmap CAP_SYS_RAWIO check.

One complication is that the DSA device allows for indirect ("batched")
descriptors. There is no reasonable way to do the input validation
on these indirect descriptors so the write() method will not allow these
to be submitted to the hardware on affected hardware, and the sysfs
enumeration of support for the opcode is also removed.

Early performance data shows that the performance delta for most common
cases is within the noise.

Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-05-17 11:56:23 +02:00
..
accessibility speakup: Avoid crash on very long word 2024-04-27 17:07:15 +02:00
acpi ACPI: CPPC: Fix access width used for PCC registers 2024-05-02 16:29:29 +02:00
amba amba: bus: fix refcount leak 2023-09-13 09:42:56 +02:00
android binder: check offset alignment in binder_get_object() 2024-04-27 17:07:13 +02:00
ata ata: sata_gemini: Check clk_enable() result 2024-05-17 11:56:05 +02:00
atm atm: idt77252: fix a memleak in open_card_ubr0 2024-02-16 19:06:26 +01:00
auxdisplay auxdisplay: hd44780: move cursor home after clear display command 2023-12-08 08:51:16 +01:00
base driver core: Introduce device_link_wait_removal() 2024-04-10 16:28:32 +02:00
bcma Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
block aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts 2024-03-26 18:20:29 -04:00
bluetooth Bluetooth: qca: fix firmware check error path 2024-05-17 11:56:23 +02:00
bus bus: mhi: host: Add MHI_PM_SYS_ERR_FAIL state 2024-04-13 13:05:16 +02:00
cdrom block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
char timers: Get rid of del_singleshot_timer_sync() 2024-05-17 11:56:12 +02:00
clk clk: Don't hold prepare_lock when calling kref_put() 2024-05-17 11:56:09 +02:00
clocksource clocksource/drivers/arm_global_timer: Fix maximum prescaler value 2024-04-03 15:19:44 +02:00
comedi comedi: vmk80xx: fix incomplete endpoint checking 2024-04-27 17:07:14 +02:00
connector connector/cn_proc: Use task_is_in_init_pid_ns() 2022-01-26 18:57:09 -08:00
counter counter: microchip-tcb-capture: Fix the use of internal GCLK logic 2023-10-19 23:08:58 +02:00
cpufreq cpufreq: Don't unregister cpufreq cooling on CPU hotplug 2024-04-13 13:05:00 +02:00
cpuidle cpuidle: Avoid potential overflow in integer multiplication 2024-04-13 13:04:54 +02:00
crypto crypto: qat - resolve race condition during AER recovery 2024-04-03 15:19:26 +02:00
cxl cxl/pci: Fix disabling memory if DVSEC CXL Range does not match a CFMWS window 2024-03-01 13:26:31 +01:00
dax dax/kmem: Pass valid argument to memory_group_register_static 2023-07-19 16:21:43 +02:00
dca dca: Use PTR_ERR_OR_ZERO() to simplify code 2020-05-15 16:25:20 +02:00
devfreq PM / devfreq: Synchronize devfreq_monitor_[start/stop] 2024-02-05 20:12:47 +00:00
dio drivers: dio: fix possible memory leak in dio_init() 2022-12-31 13:32:38 +01:00
dma dmaengine: idxd: add a write() method for applications to submit work 2024-05-17 11:56:23 +02:00
dma-buf dma-buf: Fix NULL pointer dereference in sanitycheck() 2024-04-10 16:28:21 +02:00
edac EDAC/thunderx: Fix possible out-of-bounds string access 2024-01-25 15:27:18 -08:00
eisa EISA: use DEVICE_ATTR_RO() helper macro 2021-06-04 15:28:34 +02:00
extcon extcon: cht_wc: add POWER_SUPPLY dependency 2023-09-13 09:42:53 +02:00
firewire firewire: nosy: ensure user_length is taken into account when fetching packet contents 2024-05-17 11:56:16 +02:00
firmware x86/efistub: Remap kernel text read-only before dropping NX attribute 2024-04-27 17:07:07 +02:00
fpga fpga: bridge: fix kernel-doc parameter description 2023-05-11 23:03:27 +09:00
fsi fsi: aspeed: Reset master errors after CFAM reset 2023-09-13 09:42:54 +02:00
gnss gnss: replace ida_simple API 2022-06-21 09:30:36 +02:00
gpio gpiolib: cdev: fix uninitialised kfifo 2024-05-17 11:56:15 +02:00
gpu drm/amd/display: Handle Y carry-over in VCP X.Y calculation 2024-05-17 11:56:21 +02:00
greybus greybus: svc: clean up link configuration hack at hello 2022-02-04 15:27:44 +01:00
hid HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up 2024-05-02 16:29:28 +02:00
hsi HSI: omap_ssi_core: Fix error handling in ssi_init() 2022-12-31 13:32:45 +01:00
hte hte: tegra: Fix missing error code in tegra_hte_test_probe() 2023-11-20 11:51:58 +01:00
hv Drivers: hv: vmbus: Don't free ring buffers that couldn't be re-encrypted 2024-05-17 11:56:08 +02:00
hwmon hwmon: (pmbus/ucd9000) Increase delay from 250 to 500us 2024-05-17 11:56:21 +02:00
hwspinlock hwspinlock: qcom: add missing regmap config for SFPB MMIO implementation 2023-09-19 12:28:05 +02:00
hwtracing hwtracing: hisi_ptt: Move type check to the beginning of hisi_ptt_pmu_event_init() 2024-03-26 18:20:58 -04:00
i2c i2c: smbus: fix NULL function pointer dereference 2024-05-02 16:29:32 +02:00
i3c i3c: master: cdns: Update maximum prescaler value for i2c clock 2024-02-05 20:12:58 +00:00
idle intel_idle: add Emerald Rapids Xeon support 2023-10-10 22:00:44 +02:00
iio iio: accel: mxc4005: Interrupt handling fixes 2024-05-17 11:56:19 +02:00
infiniband qibfs: fix dentry leak 2024-05-17 11:56:10 +02:00
input Input: imagis - use FIELD_GET where applicable 2024-04-13 13:05:13 +02:00
interconnect Revert "interconnect: Teach lockdep about icc_bw_lock order" 2024-03-06 14:45:19 +00:00
iommu iommu: mtk: fix module autoloading 2024-05-17 11:56:08 +02:00
ipack Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
irqchip irqchip/gic-v3-its: Prevent double free on error 2024-05-02 16:29:29 +02:00
isdn mISDN: Update parameter type of dsp_cmx_send() 2023-08-16 18:27:26 +02:00
leds leds: sgm3140: Add missing timer cleanup and flash gpio control 2024-03-26 18:20:52 -04:00
macintosh macintosh: via-pmu-led: requires ATA to be set 2023-05-11 23:03:31 +09:00
mailbox mailbox: arm_mhuv2: Fix a bug for mhuv2_sender_interrupt 2024-02-05 20:12:58 +00:00
mcb mcb: fix error handling for different scenarios when parsing 2023-11-28 17:07:13 +00:00
md dm integrity: fix out-of-range warning 2024-04-10 16:28:23 +02:00
media media: cec: core: remove length check of Timer Status 2024-04-17 11:18:23 +02:00
memory memory: brcmstb_dpfe: fix testing array offset after use 2023-07-19 16:21:24 +02:00
memstick memstick r592: make memstick_debug_get_tpc_name() static 2023-07-19 16:21:08 +02:00
message scsi: message: mptlan: Fix use after free bug in mptlan_remove() due to race condition 2023-05-24 17:32:37 +01:00
mfd mfd: altera-sysmgr: Call of_node_put() only when of_parse_phandle() takes a ref 2024-03-26 18:20:50 -04:00
misc mei: me: add lunar lake point M DID 2024-05-17 11:56:20 +02:00
mmc mmc: sdhci-msm: pervent access to suspended controller 2024-05-02 16:29:28 +02:00
most most: usb: replace snprintf in show functions with sysfs_emit 2021-11-26 17:03:47 +01:00
mtd mtd: diskonchip: work around ubsan link failure 2024-05-02 16:29:30 +02:00
mux mux: Fix struct mux_state kernel-doc comment 2022-02-04 15:47:12 +01:00
net net: hns3: fix kernel crash when devlink reload during initialization 2024-05-17 11:56:14 +02:00
nfc NFC: trf7970a: disable all regulators on removal 2024-05-02 16:29:24 +02:00
ntb NTB: fix possible name leak in ntb_register_device() 2024-03-26 18:20:49 -04:00
nubus nubus: Partially revert proc_create_single_data() conversion 2023-07-05 18:27:37 +01:00
nvdimm nd_btt: Make BTT lanes preemptible 2023-11-20 11:52:05 +01:00
nvme nvme: fix warn output about shared namespaces without CONFIG_NVME_MULTIPATH 2024-05-17 11:55:56 +02:00
nvmem nvmem: meson-efuse: fix function pointer type mismatch 2024-04-03 15:19:32 +02:00
of of: dynamic: Synchronize of_changeset_destroy() with the devlink removals 2024-04-10 16:28:32 +02:00
opp OPP: debugfs: Fix warning around icc_get_name() 2024-03-26 18:20:42 -04:00
parisc parisc/power: Fix power soft-off button emulation on qemu 2024-01-31 16:16:59 -08:00
parport parport: parport_serial: Add Brainboxes device IDs and geometry 2024-01-20 11:50:11 +01:00
pci PCI/ASPM: Fix deadlock when enabling ASPM 2024-04-27 17:07:18 +02:00
pcmcia pcmcia: ds: fix possible name leak in error path in pcmcia_device_add() 2023-11-20 11:52:13 +01:00
peci peci: cpu: Fix use-after-free in adev_release() 2022-08-15 20:31:35 +02:00
perf drivers/perf: riscv: Disable PERF_SAMPLE_BRANCH_* while not supported 2024-04-10 16:28:30 +02:00
phy phy: ti: tusb1210: Resolve charger-det crash if charger psy is unregistered 2024-05-02 16:29:31 +02:00
pinctrl pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map() 2024-05-17 11:55:55 +02:00
platform platform/x86: intel-vbtn: Update tablet mode switch at end of probe 2024-04-13 13:05:26 +02:00
pnp PNP: ACPI: fix fortify warning 2024-02-05 20:12:47 +00:00
power power: supply: mt6360_charger: Fix of_match for usb-otg-vbus regulator 2024-05-17 11:55:55 +02:00
powercap powercap: dtpm_cpu: Fix error check against freq_qos_add_request() 2024-03-26 18:20:36 -04:00
pps pps: generators: pps_gen_parport: Switch to use module_parport_driver() 2022-03-18 14:01:19 +01:00
ps3 powerpc/ps3: Warn on PS3 device errors 2021-06-10 21:44:58 +10:00
ptp ptp: annotate data-race around q->head and q->tail 2023-11-28 17:07:05 +00:00
pwm pwm: img: fix pwm clock lookup 2024-04-03 15:19:45 +02:00
rapidio rapidio: devices: fix missing put_device in mport_cdev_open 2022-12-31 13:32:00 +01:00
ras RAS/CEC: Reduce offline page threshold for Intel systems 2022-08-22 19:30:02 +02:00
regulator regulator: core: fix debugfs creation regression 2024-05-17 11:56:22 +02:00
remoteproc remoteproc: virtio: Fix wdg cannot recovery remote processor 2024-04-03 15:19:24 +02:00
reset reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning 2024-01-20 11:50:07 +01:00
rpmsg rpmsg: virtio: Free driver_override when rpmsg_remove() 2024-01-31 16:16:59 -08:00
rtc rtc: mt6397: select IRQ_DOMAIN instead of depending on it 2024-03-26 18:20:58 -04:00
s390 s390/qeth: Fix kernel panic after setting hsuid 2024-05-17 11:56:01 +02:00
sbus module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
scsi scsi: bnx2fc: Remove spin_lock_bh while releasing resources after upload 2024-05-17 11:56:04 +02:00
sh genirq: Add and use an irq_data_update_affinity helper 2022-07-07 09:38:04 +01:00
siox siox: fix possible memory leak in siox_device_add() 2022-11-09 15:40:14 +01:00
slimbus slimbus: qcom-ngd-ctrl: Add timeout for wait operation 2024-05-17 11:56:20 +02:00
soc soc: fsl: qbman: Use raw spinlock for cgr_lock 2024-04-03 15:19:36 +02:00
soundwire ASoC: Intel: common: DMI remap for rebranded Intel NUC M15 (LAPRC710) laptops 2024-04-13 13:05:07 +02:00
spi spi: microchip-core-qspi: fix setting spi bus clock rate 2024-05-17 11:56:22 +02:00
spmi spmi: mediatek: Fix UAF on device remove 2024-02-05 20:12:58 +00:00
ssb ssb: gpio: Use generic_handle_irq_safe() 2022-09-19 15:08:38 +02:00
staging timers: Get rid of del_singleshot_timer_sync() 2024-05-17 11:56:12 +02:00
target scsi: target: Fix SELinux error when systemd-modules loads the target module 2024-05-17 11:56:07 +02:00
tc The main MIPS changes for 5.6: 2020-01-31 11:28:31 -08:00
tee tee: optee: Fix kernel panic caused by incorrect error handling 2024-04-03 15:19:42 +02:00
thermal thermal/of: Assume polling-delay(-passive) 0 when absent 2024-04-13 13:05:19 +02:00
thunderbolt thunderbolt: Fix wake configurations after device unplug 2024-04-27 17:07:14 +02:00
tty serial: stm32: Reset .throttled state in .startup() 2024-04-27 17:07:14 +02:00
ufs scsi: ufs: core: WLUN suspend dev/link state error recovery 2024-05-17 11:56:05 +02:00
uio uio_hv_generic: Don't free decrypted memory 2024-05-17 11:56:08 +02:00
usb usb: typec: tcpm: Check for port partner validity before consuming it 2024-05-17 11:56:18 +02:00
vdpa vdpa/mlx5: Allow CVQ size changes 2024-03-26 18:21:00 -04:00
vfio VFIO: Add the SPR_DSA and SPR_IAX devices to the denylist 2024-05-17 11:56:23 +02:00
vhost vhost: Add smp_rmb() in vhost_enable_notify() 2024-04-17 11:18:27 +02:00
video fbdev: fix incorrect address computation in deferred IO 2024-05-02 16:29:30 +02:00
virt virt: sevguest: Fix passing a stack buffer as a scatterlist target 2023-11-20 11:52:13 +01:00
virtio virtio: reenable config if freezing device failed 2024-04-13 13:05:25 +02:00
vlynq bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
w1 w1: fix loop in w1_fini() 2023-07-19 16:21:48 +02:00
watchdog watchdog: stm32_iwdg: initialize default timeout 2024-03-26 18:20:56 -04:00
xen xen/events: close evtchn after mapping cleanup 2024-03-06 14:45:20 +00:00
zorro proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
Kconfig vme: move back to staging 2022-06-10 15:38:14 +02:00
Makefile hwtracing: hisi_ptt: Add trace function support for HiSilicon PCIe Tune and Trace device 2022-09-08 16:26:17 -06:00