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Manivannan Sadhasivam e6011ae848 Revert "PCI: Enable ACS after configuring IOMMU for OF platforms" ... This reverts commit b20b659c2c which is commit c41e2fb67e upstream. The original commit attempted to enable ACS in pci_dma_configure() prior to IOMMU group assignment in iommu_init_device() to fix the ACS enablement issue for OF platforms. But that assumption doesn't hold true for kernel versions prior to v6.15, because on these older kernels, pci_dma_configure() is called *after* iommu_init_device(). So the IOMMU groups are already created before the ACS gets enabled. This causes the devices that should have been split into separate groups by ACS, getting merged into one group, thereby breaking the IOMMU isolation as reported on the AMD machines. So revert the offending commit to restore the IOMMU group assignment on those affected machines. It should be noted that ACS has never really worked on kernel versions prior to v6.15, so the revert doesn't make any difference for OF platforms. Reported-by: John Hancock <john@kernel.doghat.io> Reported-by: bjorn.forsman@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221234 Fixes: b20b659c2c ("PCI: Enable ACS after configuring IOMMU for OF platforms") Cc: Linux kernel regressions list <regressions@lists.linux.dev> Link: https://lore.kernel.org/regressions/2c30f181-ffc6-4d63-a64e-763cf4528f48@leemhuis.info Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2026-04-18 10:33:39 +02:00
..
accessibility	speakup: Fix sizeof() vs ARRAY_SIZE() bug	2024-06-16 13:39:11 +02:00
acpi	ACPI: EC: Fix ECDT probe ordering issues	2026-04-18 10:33:26 +02:00
amba	amba: tegra-ahb: Fix device leak on SMMU enable	2026-01-19 13:09:54 +01:00
android	binder: don't use %pK through printk	2026-03-04 07:20:16 -05:00
ata	ata: libata-scsi: refactor ata_scsi_translate()	2026-04-18 10:33:07 +02:00
atm	atm: fore200e: fix use-after-free in tasklets during device removal	2026-03-04 07:20:36 -05:00
auxdisplay	auxdisplay: arm-charlcd: fix release_mem_region() size	2026-03-04 07:19:20 -05:00
base	regmap: Synchronize cache for the page selector	2026-04-18 10:33:25 +02:00
bcma	Driver core update for 5.15-rc1	2021-09-01 08:44:42 -07:00
block	drbd: fix "LOGIC BUG" in drbd_al_begin_io_nonblock()	2026-04-18 10:33:09 +02:00
bluetooth	Bluetooth: btusb: clamp SCO altsetting table indices	2026-04-18 10:33:25 +02:00
bus	bus: fsl-mc: fix an error handling in fsl_mc_device_add()	2026-03-04 07:20:32 -05:00
cdrom	scsi: sr: cdrom: Move cdrom_read_cdda_bpc() into the sr driver	2021-07-30 22:13:09 -04:00
char	char: tpm: cr50: Remove IRQF_ONESHOT	2026-03-04 07:20:01 -05:00
clk	clk: tegra: tegra124-emc: fix device leak on set_rate()	2026-04-18 10:33:07 +02:00
clocksource	clocksource/drivers/timer-integrator-ap: Add missing Kconfig dependency on OF	2026-03-04 07:20:00 -05:00
comedi	comedi: me4000: Fix potential overrun of firmware buffer	2026-04-18 10:33:34 +02:00
connector	net/connector: Add const qualifier to cb_id	2020-12-16 11:06:49 -08:00
counter	counter: interrupt-cnt: Drop IRQF_NO_THREAD flag	2026-01-19 13:10:18 +01:00
cpufreq	cpufreq: conservative: Reset requested_freq on limits change	2026-04-18 10:33:27 +02:00
cpuidle	sched: idle: Make skipping governor callbacks more consistent	2026-04-18 10:33:12 +02:00
crypto	crypto: ccp - Add an S4 restore flow	2026-03-04 07:19:42 -05:00
cxl	cxl/mem: Fix shutdown order	2023-11-20 11:08:27 +01:00
dax	dax/kmem: Pass valid argument to memory_group_register_static	2023-07-23 13:47:17 +02:00
dca	dca: Use PTR_ERR_OR_ZERO() to simplify code	2020-05-15 16:25:20 +02:00
devfreq	PM / devfreq: governor: Replace sscanf() with kstrtoul() in set_freq_store()	2025-08-28 16:24:17 +02:00
dio	drivers: dio: fix possible memory leak in dio_init()	2022-12-31 13:14:27 +01:00
dma	dmaengine: sh: rz-dmac: Protect the driver specific lists	2026-04-18 10:33:38 +02:00
dma-buf	dma-buf: insert memory barrier before updating num_fences	2025-09-09 18:50:23 +02:00
edac	EDAC/i5400: Fix snprintf() limit calculation in calculate_dimm_size()	2026-03-04 07:19:27 -05:00
eisa	EISA: use DEVICE_ATTR_RO() helper macro	2021-06-04 15:28:34 +02:00
extcon	extcon: adc-jack: Cleanup wakeup source only if it was enabled	2025-12-07 06:09:26 +09:00
firewire	firewire: nosy: Fix dma_free_coherent() size	2026-01-19 13:09:57 +01:00
firmware	firmware: arm_scpi: Fix device_node reference leak in probe path	2026-04-18 10:33:20 +02:00
fpga	fpga: dfl: use subsys_initcall to allow built-in drivers to be added	2026-03-04 07:20:25 -05:00
fsi	fsi: aspeed: Reset master errors after CFAM reset	2023-09-19 12:22:46 +02:00
gnss	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
gpio	gpiolib: cdev: fix uninitialised kfifo	2026-04-18 10:33:36 +02:00
gpu	drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat	2026-04-18 10:33:37 +02:00
greybus	greybus: Fix use-after-free bug in gb_interface_release due to race condition.	2024-07-05 09:14:23 +02:00
hid	HID: multitouch: Check to ensure report responses match the request	2026-04-18 10:33:29 +02:00
hsi	HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition	2025-05-02 07:44:06 +02:00
hv	Drivers: hv: vmbus: Add utility function for querying ring size	2025-07-10 15:57:36 +02:00
hwmon	hwmon: (occ) Fix division by zero in occ_show_power_1()	2026-04-18 10:33:32 +02:00
hwspinlock	hwspinlock: Introduce hwspin_lock_bust()	2024-09-12 11:07:41 +02:00
hwtracing	coresight: etm3x: Fix cpulocked warning on cpuhp	2026-03-04 07:19:46 -05:00
i2c	i2c: cp2615: fix serial string NULL-deref at probe	2026-04-18 10:33:39 +02:00
i3c	i3c: mipi-i3c-hci: Add missing TID field to no-op command descriptor	2026-04-18 10:33:16 +02:00
idle	intel_idle: Allow loading ACPI tables for any family	2025-08-28 16:24:16 +02:00
iio	iio: adc: ad7923: Fix buffer overflow for tx_buf and ring_xfer	2026-04-18 10:33:36 +02:00
infiniband	RDMA/irdma: Return EINVAL for invalid arp index error	2026-04-18 10:33:26 +02:00
input	Input: uinput - take event lock when submitting FF request "event"	2026-04-18 10:33:35 +02:00
interconnect	interconnect: qcom: sc7280: Add missing num_links to xm_pcie3_1 node	2025-08-28 16:24:03 +02:00
iommu	iommu/vt-d: Fix intel iommu iotlb sync hardlockup and retry	2026-04-18 10:33:17 +02:00
ipack	ipack: ipoctal: fix module reference leak	2021-09-27 17:38:49 +02:00
irqchip	irqchip/gic-v3-its: Limit number of per-device MSIs to the range the ITS supports	2026-04-18 10:33:15 +02:00
isdn	mISDN: annotate data-race around dev->work	2026-02-06 16:41:55 +01:00
leds	leds: led-class: Only Add LED to leds_list when it is fully ready	2026-02-06 16:41:56 +01:00
macintosh	macintosh/mac_hid: fix race condition in mac_hid_toggle_emumouse	2026-01-19 13:09:28 +01:00
mailbox	mailbox: sprd: clear delivery flag before handling TX done	2026-03-04 07:20:14 -05:00
mcb	mcb: fix a double free bug in chameleon_parse_gdd()	2025-05-02 07:44:31 +02:00
md	dm mpath: make pg_init_delay_msecs settable	2026-03-04 07:20:32 -05:00
media	media: uvcvideo: Use heuristic to find stream entity	2026-04-18 10:33:35 +02:00
memory	memory: mtk-smi: fix device leak on larb probe	2026-04-18 10:33:06 +02:00
memstick	memstick: Add timeout to prevent indefinite waiting	2025-12-07 06:09:16 +09:00
message	scsi: fusion: Remove unused variable 'rc'	2024-12-14 19:51:02 +01:00
mfd	mfd: omap-usb-host: Fix OF populate on driver rebind	2026-04-18 10:33:07 +02:00
misc	misc: eeprom: Fix EWEN/EWDS/ERAL commands for 93xx56 and 93xx66	2026-03-04 07:20:16 -05:00
mmc	mmc: vub300: fix NULL-deref on disconnect	2026-04-18 10:33:37 +02:00
most	most: usb: fix double free on late probe failure	2025-12-07 06:09:35 +09:00
mtd	mtd: rawnand: brcmnand: skip DMA during panic write	2026-04-18 10:33:22 +02:00
mux	mux: gpio: Simplify code by using dev_err_probe()	2021-04-02 16:28:53 +02:00
net	net: macb: Move devm_{free,request}_irq() out of spin lock area	2026-04-18 10:33:38 +02:00
nfc	nfc: pn533: allocate rx skb before consuming bytes	2026-04-18 10:33:37 +02:00
ntb	NTB: ntb_transport: Fix too small buffer for debugfs_name	2026-03-04 07:20:37 -05:00
nubus	nubus: Partially revert proc_create_single_data() conversion	2023-07-05 18:25:05 +01:00
nvdimm	nvdimm/bus: Fix potential use after free in asynchronous initialization	2026-04-18 10:33:17 +02:00
nvme	nvmet-tcp: fix use-before-check of sg in bounds validation	2026-04-18 10:33:33 +02:00
nvmem	nvmem: core: improve range check for nvmem_cell_write()	2025-03-13 12:50:32 +01:00
of	of: platform: Use default match table for /firmware	2026-02-06 16:42:01 +01:00
opp	OPP: debugfs: Fix warning around icc_get_name()	2024-03-26 18:21:23 -04:00
parisc	parisc: Do not reprogram affinitiy on ASP chip	2026-01-19 13:09:52 +01:00
parport	parport_pc: add support for ASIX AX99100	2025-03-13 12:50:46 +01:00
pci	Revert "PCI: Enable ACS after configuring IOMMU for OF platforms"	2026-04-18 10:33:39 +02:00
pcmcia	pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch	2025-10-02 13:39:05 +02:00
perf	perf: arm_spe: Prevent overflow in PERF_IDX2OFF()	2025-10-19 16:21:29 +02:00
phy	phy: renesas: rcar-gen3-usb2: Assert PLL reset on PHY power off	2026-04-18 10:33:33 +02:00
pinctrl	pinctrl: mediatek: common: Fix probe failure for devices without EINT	2026-04-18 10:33:24 +02:00
platform	platform/olpc: olpc-xo175-ec: Fix overflow error message to print inlen	2026-04-18 10:33:24 +02:00
pnp	PNP: ACPI: fix fortify warning	2024-02-23 08:54:38 +01:00
power	power: supply: wm97xx: Fix NULL pointer dereference in power_supply_changed()	2026-03-04 07:19:41 -05:00
powercap	powercap: fix sscanf() error return value handling	2026-01-19 13:10:19 +01:00
pps	pps: fix warning in pps_register_cdev when register device fail	2025-10-19 16:21:33 +02:00
ps3	powerpc/ps3: Warn on PS3 device errors	2021-06-10 21:44:58 +10:00
ptp	ptp: Add PHC file mode checks. Allow RO adjtime() without FMODE_WRITE.	2026-02-06 16:41:51 +01:00
pwm	pwm: stm32: Always program polarity	2026-01-19 13:10:12 +01:00
rapidio	rapidio: replace rio_free_net() with kfree() in rio_scan_alloc_net()	2026-03-04 07:20:32 -05:00
ras	RAS/CEC: Correct ce_add_elem()'s returned values	2021-04-07 11:52:26 +02:00
regulator	regulator: pca9450: Correct interrupt type	2026-04-18 10:33:12 +02:00
remoteproc	remoteproc: mediatek: Unprepare SCP clock during system suspend	2026-04-18 10:33:11 +02:00
reset	reset: brcmstb: Enable reset drivers for ARCH_BCM2835	2025-08-28 16:24:18 +02:00
rpmsg	rpmsg: core: fix race in driver_override_show() and use core helper	2026-03-04 07:20:25 -05:00
rtc	rtc: interface: Alarm race handling should not discard preceding error	2026-03-04 07:19:56 -05:00
s390	s390/cio: Fix device lifecycle handling in css_alloc_subchannel()	2026-03-04 07:19:23 -05:00
sbus	module: remove never implemented MODULE_SUPPORTED_DEVICE	2021-03-17 13:16:18 -07:00
scsi	scsi: ses: Handle positive SCSI error from ses_recv_diag()	2026-04-18 10:33:27 +02:00
sh	sh: clk: Fix clk_enable() to return 0 on NULL clk	2025-01-09 13:28:34 +01:00
siox	siox: fix possible memory leak in siox_device_add()	2022-11-26 09:24:36 +01:00
slimbus	slimbus: core: fix device reference leak on report present	2026-02-06 16:41:57 +01:00
soc	soc: fsl: qbman: fix race condition in qman_destroy_fq	2026-04-18 10:33:19 +02:00
soundwire	soundwire: stream: restore params when prepare ports fail	2025-08-28 16:24:10 +02:00
spi	spi: spi-fsl-lpspi: fix teardown order issue (UAF)	2026-04-18 10:33:27 +02:00
spmi	spmi: hisi-spmi-controller: Do not override device identifier	2024-07-05 09:14:20 +02:00
ssb	ssb: Fix division by zero issue in ssb_calc_clock_rate	2024-09-04 13:23:20 +02:00
staging	staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser	2026-04-18 10:33:35 +02:00
target	scsi: target: tcm_loop: Drain commands in target_reset handler	2026-04-18 10:33:38 +02:00
tc	The main MIPS changes for 5.6:	2020-01-31 11:28:31 -08:00
tee	tee: allow a driver to allocate a tee_device without a pool	2025-12-07 06:09:17 +09:00
thermal	thermal/drivers/qcom/lmh: Add missing IRQ includes	2025-10-19 16:21:31 +02:00
thunderbolt	thunderbolt: Fix property read in nhi_wake_supported()	2026-04-18 10:33:34 +02:00
tty	serial: uartlite: fix PM runtime usage count underflow on probe	2026-04-18 10:33:18 +02:00
uio	uio: uio_fsl_elbc_gpcm:: Add null pointer check to uio_fsl_elbc_gpcm_probe	2026-01-19 13:09:23 +01:00
usb	usb: gadget: uvc: fix NULL pointer dereference during unbind race	2026-04-18 10:33:38 +02:00
vdpa	vdpa: Sync calls set/get config/status with cf_mutex	2026-01-19 13:09:34 +01:00
vfio	vfio/type1: Fix error unwind in migration dirty bitmap allocation	2025-06-27 11:05:13 +01:00
vhost	vhost/vsock: improve RCU read sections around vhost_vsock_get()	2026-01-19 13:09:48 +01:00
video	fbcon: Set fb_display[i]->mode to NULL when the mode is released	2026-04-18 10:33:35 +02:00
virt	minmax: add in_range() macro	2025-10-19 16:21:28 +02:00
virtio	mm/balloon_compaction: convert balloon_page_delete() to balloon_page_finalize()	2026-01-19 13:10:10 +01:00
visorbus	visorbus: fix error return code in visorchipset_init()	2021-06-04 15:27:26 +02:00
vlynq	bus: Make remove callback return void	2021-07-21 11:53:42 +02:00
vme	vme: Fix error not catched in fake_init()	2022-12-31 13:14:30 +01:00
w1	w1: therm: Fix off-by-one buffer overflow in alarms_store	2026-02-06 16:42:02 +01:00
watchdog	fix it87_wdt early reboot by reporting running timer	2026-03-04 07:20:16 -05:00
xen	xen/privcmd: unregister xenstore notifier on module exit	2026-04-18 10:33:37 +02:00
zorro	zorro: Drop useless (and hardly used) .driver member in struct zorro_dev	2021-08-05 14:37:04 +02:00
Kconfig	firmware: include drivers/firmware/Kconfig unconditionally	2021-10-07 16:51:26 +02:00
Makefile	virtio: always enter drivers/virtio/	2021-12-22 09:32:39 +01:00