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Anthony Pighin (Nokia) e9c072f2f6 rtc: interface: Alarm race handling should not discard preceding error 
[ Upstream commit 81be22cd4a ]

Commit 795cda8338 ("rtc: interface: Fix long-standing race when setting
alarm") should not discard any errors from the preceding validations.

Prior to that commit, if the alarm feature was disabled, or the
set_alarm failed, a meaningful error code would be returned to the
caller for further action.

After, more often than not, the __rtc_read_time will cause a success
return code instead, misleading the caller.

An example of this is when timer_enqueue is called for a rtc-abx080x
device. Since that driver does not clear the alarm feature bit, but
instead relies on the set_alarm operation to return invalid, the discard
of the return code causes very different behaviour; i.e.
    hwclock: select() to /dev/rtc0 to wait for clock tick timed out

Fixes: 795cda8338 ("rtc: interface: Fix long-standing race when setting alarm")
Signed-off-by: Anthony Pighin (Nokia) <anthony.pighin@nokia.com>
Reviewed-by: Esben Haabendal <esben@geanix.com>
Tested-by: Nick Bowler <nbowler@draconx.ca>
Link: https://patch.msgid.link/BN0PR08MB6951415A751F236375A2945683D1A@BN0PR08MB6951.namprd08.prod.outlook.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:19:56 -05:00
..
accessibility speakup: Fix sizeof() vs ARRAY_SIZE() bug 2024-06-16 13:39:11 +02:00
acpi ACPI: CPPC: Fix remaining for_each_possible_cpu() to use online CPUs 2026-03-04 07:19:49 -05:00
amba amba: tegra-ahb: Fix device leak on SMMU enable 2026-01-19 13:09:54 +01:00
android binderfs: fix ida_alloc_max() upper bound 2026-02-11 13:35:29 +01:00
ata ata: pata_ftide010: Fix some DMA timings 2026-03-04 07:19:55 -05:00
atm atm: Fix dma_free_coherent() size 2026-01-19 13:10:13 +01:00
auxdisplay auxdisplay: arm-charlcd: fix release_mem_region() size 2026-03-04 07:19:20 -05:00
base PM: sleep: wakeirq: harden dev_pm_clear_wake_irq() against races 2026-03-04 07:19:23 -05:00
bcma Driver core update for 5.15-rc1 2021-09-01 08:44:42 -07:00
block rbd: check for EOD after exclusive lock is ensured to be held 2026-02-11 13:35:26 +01:00
bluetooth Bluetooth: hci_qca: Fix the teardown problem for real 2026-02-11 13:35:28 +01:00
bus bus: fsl-mc: fix use-after-free in driver_override_show() 2026-02-19 16:21:45 +01:00
cdrom scsi: sr: cdrom: Move cdrom_read_cdda_bpc() into the sr driver 2021-07-30 22:13:09 -04:00
char tpm: st33zp24: Fix missing cleanup on get_burstcount() error 2026-03-04 07:19:22 -05:00
clk clk: qcom: dispcc-sdm845: Enable parents for pixel clocks 2026-03-04 07:19:45 -05:00
clocksource clocksource/drivers/sp804: Do not use timer namespace for timer_shutdown() function 2026-02-11 13:35:27 +01:00
comedi comedi: Fix getting range information for subdevices 16 to 255 2026-02-06 16:42:01 +01:00
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: nforce2: fix reference count leak in nforce2 2026-01-19 13:09:51 +01:00
cpuidle cpuidle: Skip governor when only one idle state is available 2026-03-04 07:19:50 -05:00
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 dma: dma-axi-dmac: fix SW cyclic transfers 2026-03-04 07:19:45 -05:00
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 efi/cper: Fix cper_bits_to_str buffer handling and return value 2026-01-19 13:10:19 +01:00
fpga fpga: zynq_fpga: Fix the wrong usage of dma_map_sgtable() 2025-08-28 16:24:34 +02:00
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: acpi: Fix gpio count with string references 2026-02-19 16:21:44 +01:00
gpu drm/i915/acpi: free _DSM package when no connectors 2026-03-04 07:19:53 -05:00
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: playstation: Add missing check for input_ff_create_memless 2026-03-04 07:19:32 -05:00
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) Mark occ_init_attribute() as __printf 2026-02-11 13:35:32 +01:00
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: amd-mp2: fix reference leak in MP2 PCI device 2026-01-19 13:09:54 +01:00
i3c i3c: Move device name assignment after i3c_bus_init 2026-03-04 07:19:21 -05:00
idle intel_idle: Allow loading ACPI tables for any family 2025-08-28 16:24:16 +02:00
iio iio: sca3000: Fix a resource leak in sca3000_probe() 2026-03-04 07:19:48 -05:00
infiniband RDMA/uverbs: Add __GFP_NOWARN to ib_uverbs_unmarshall_recv() kmalloc 2026-03-04 07:19:44 -05:00
input Input: i8042 - add quirk for ASUS Zenbook UX425QA_UM425QA 2026-02-06 16:41:54 +01:00
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: Flush cache for PASID table before using it 2026-03-04 07:19:34 -05:00
ipack ipack: ipoctal: fix module reference leak 2021-09-27 17:38:49 +02:00
irqchip irqchip/gic-v3-its: Avoid truncating memory addresses 2026-02-06 16:41:58 +01:00
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: mailbox-test: Fix debugfs_create_dir error checking 2025-12-07 06:09:34 +09:00
mcb mcb: fix a double free bug in chameleon_parse_gdd() 2025-05-02 07:44:31 +02:00
md md/raid10: fix any_working flag handling in raid10_sync_request 2026-03-04 07:19:22 -05:00
media media: uvcvideo: Fix allocation for small frame sizes 2026-03-04 07:19:32 -05:00
memory memory: samsung: exynos-srom: Fix of_iomap leak in exynos_srom_probe 2025-10-19 16:21:47 +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: arizona: Fix regulator resource leak on wm5102_clear_write_sequencer() failure 2026-03-04 07:19:47 -05:00
misc mei: trace: treat reg parameter as string 2026-02-06 16:42:03 +01:00
mmc Revert "mmc: rtsx_pci_sdmmc: increase power-on settling delay to 5ms" 2026-03-04 07:19:46 -05:00
most most: usb: fix double free on late probe failure 2025-12-07 06:09:35 +09:00
mtd mtd: parsers: ofpart: fix OF node refcount leak in parse_fixed_partitions() 2026-03-04 07:19:43 -05:00
mux mux: gpio: Simplify code by using dev_err_probe() 2021-04-02 16:28:53 +02:00
net bonding: alb: fix UAF in rlb_arp_recv during bond up/down 2026-03-04 07:19:52 -05:00
nfc Revert "nfc/nci: Add the inconsistency check between the input data length and count" 2026-02-06 16:41:53 +01:00
ntb ntb: reduce stack usage in idt_scan_mws 2025-05-02 07:44:36 +02:00
nubus nubus: Partially revert proc_create_single_data() conversion 2023-07-05 18:25:05 +01:00
nvdimm nvdimm: virtio_pmem: serialize flush requests 2026-03-04 07:19:44 -05:00
nvme nvmet-tcp: pass iov_len instead of sg->length to bvec_set_page() 2026-02-11 13:35:34 +01:00
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 PCI: Initialize RCB from pci_configure_device() 2026-03-04 07:19:35 -05:00
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: tegra: xusb: Explicitly configure HS_DISCON_LEVEL to 0x7 2026-02-06 16:41:48 +01:00
pinctrl pinctrl: single: fix refcount leak in pcs_add_gpio_func() 2026-03-04 07:19:49 -05:00
platform platform/chrome: cros_ec_lightbar: Fix response size initialization 2026-03-04 07:19:32 -05:00
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 drivers/rapidio/rio_cm.c: prevent possible heap overwrite 2025-06-27 11:05:33 +01:00
ras RAS/CEC: Correct ce_add_elem()'s returned values 2021-04-07 11:52:26 +02:00
regulator regulator: core: move supply check earlier in set_machine_constraints() 2026-03-04 07:19:31 -05:00
remoteproc remoteproc: qcom_q6v5_wcss: fix parsing of qcom,halt-regs 2026-01-19 13:09:36 +01:00
reset reset: brcmstb: Enable reset drivers for ARCH_BCM2835 2025-08-28 16:24:18 +02:00
rpmsg rpmsg: glink: fix rpmsg device leak 2026-01-19 13:09:54 +01:00
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: csiostor: Fix dereference of null pointer rn 2026-03-04 07:19:44 -05:00
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: qcom: cmd-db: Use devm_memremap() to fix memory leak in cmd_db_dev_probe 2026-03-04 07:19:29 -05:00
soundwire soundwire: stream: restore params when prepare ports fail 2025-08-28 16:24:10 +02:00
spi spi: tegra: Fix a memory leak in tegra_slink_probe() 2026-02-11 13:35:34 +01:00
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: greybus: lights: avoid NULL deref 2026-03-04 07:19:46 -05:00
target scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() 2026-02-11 13:35:31 +01:00
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: Add support for Intel Wildcat Lake 2025-12-07 06:09:35 +09:00
tty serial: SH_SCI: improve "DMA support" prompt 2026-03-04 07:19:46 -05:00
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: bdc: fix sleep during atomic 2026-03-04 07:19:47 -05:00
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 backlight: qcom-wled: Support ovp values for PMI8994 2026-03-04 07:19:49 -05:00
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 via_wdt: fix critical boot hang due to unnamed resource allocation 2026-01-19 13:09:47 +01:00
xen scsi: xen: scsiback: Fix potential memory leak in scsiback_remove() 2026-02-06 16:42:01 +01:00
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