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linux/drivers/rtc
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Alexandre Belloni b44f9cd36b rtc: disable uie before setting time and enable after 
commit 7e7c005b4b upstream.

When setting the time in the future with the uie timer enabled,
rtc_timer_do_work will loop for a while because the expiration of the uie
timer was way before the current RTC time and a new timer will be enqueued
until the current rtc time is reached.

If the uie timer is enabled, disable it before setting the time and enable
it after expiring current timers (which may actually be an alarm).

This is the safest thing to do to ensure the uie timer is still
synchronized with the RTC, especially in the UIE emulation case.

Reported-by: syzbot+08116743f8ad6f9a6de7@syzkaller.appspotmail.com
Fixes: 6610e0893b ("RTC: Rework RTC code to use timerqueue for events")
Link: https://lore.kernel.org/r/20191020231320.8191-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2019-12-17 19:56:52 +01:00
..
Kconfig RTC for 5.4 2019-09-22 11:05:43 -07:00
Makefile rtc: fsl-ftm-alarm: add FTM alarm driver 2019-08-23 16:20:50 +02:00
class.c rtc: class: add debug message when registration fails 2019-08-20 21:44:45 +02:00
dev.c
…
hctosys.c
…
interface.c rtc: disable uie before setting time and enable after 2019-12-17 19:56:52 +01:00
lib.c rtc: lib: check whether tm->tm_year in int32 range 2019-04-06 15:05:31 +02:00
nvmem.c
…
proc.c
…
rtc-88pm80x.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-88pm860x.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-ab-b5ze-s3.c
…
rtc-ab-eoz9.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-ab3100.c rtc: ab3100: convert to SPDX identifier 2019-04-11 16:42:55 +02:00
rtc-ab8500.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
rtc-abx80x.c
…
rtc-ac100.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-armada38x.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-as3722.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
rtc-asm9260.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-aspeed.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-at91rm9200.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-at91rm9200.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-at91sam9.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-au1xxx.c
…
rtc-bd70528.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-bq32k.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-bq4802.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-brcmstb-waketimer.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-cadence.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-cmos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-coh901331.c rtc: coh901331: convert to SPDX identifier 2019-04-08 14:40:12 +02:00
rtc-core.h
…
rtc-cpcap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
rtc-cros-ec.c mfd / platform: cros_ec: Reorganize platform and mfd includes 2019-09-02 11:33:42 +01:00
rtc-da9052.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-da9055.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-da9063.c RTC for 5.2 2019-05-09 14:46:33 -07:00
rtc-davinci.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-digicolor.c rtc: digicolor: convert to SPDX identifier 2019-05-08 22:14:31 +02:00
rtc-dm355evm.c rtc: dm355evm: convert to SPDX identifier 2019-04-04 10:07:09 +02:00
rtc-ds1216.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-ds1286.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-ds1302.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 377 2019-06-05 17:37:10 +02:00
rtc-ds1305.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-ds1307.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-ds1343.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1347.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1374.c docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
rtc-ds1390.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1511.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1553.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1672.c rtc: ds1672: remove unnecessary check 2019-08-21 09:57:23 +02:00
rtc-ds1685.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1742.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds2404.c rtc: ds2404: use hw endiannes variable 2019-05-23 17:42:25 +02:00
rtc-ds3232.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-efi-platform.c
…
rtc-efi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-em3027.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ep93xx.c rtc: ep93xx: fix checkpatch issues 2019-04-19 22:37:16 +02:00
rtc-fm3130.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-fsl-ftm-alarm.c rtc: fsl-ftm-alarm: add FTM alarm driver 2019-08-23 16:20:50 +02:00
rtc-ftrtc010.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
rtc-generic.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-goldfish.c rtc: goldfish: convert to SPDX identifier 2019-04-04 10:07:09 +02:00
rtc-hid-sensor-time.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
rtc-hym8563.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
rtc-imx-sc.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-imxdi.c rtc: imxdi: use devm_platform_ioremap_resource() to simplify code 2019-07-22 22:16:14 +02:00
rtc-isl1208.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-isl12022.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-isl12026.c rtc: isl12026: convert to i2c_new_dummy_device 2019-07-22 22:30:19 +02:00
rtc-jz4740.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-lp8788.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-lpc24xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-lpc32xx.c rtc: lpc32xx: convert to SPDX identifier 2019-04-12 12:23:20 +02:00
rtc-ls1x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-m41t80.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-m41t93.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-m41t94.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-m48t35.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-m48t59.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-m48t86.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-max6900.c
…
rtc-max6902.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-max6916.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-max8907.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-max8925.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-max8997.c
…
rtc-max8998.c
…
rtc-max77686.c rtc: max77686: convert to devm_i2c_new_dummy_device() 2019-09-01 09:18:35 +02:00
rtc-mc13xxx.c rtc: mc13xxx: fix style issue 2019-04-16 18:06:54 +02:00
rtc-mc146818-lib.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
rtc-mcp795.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-meson-vrtc.c rtc: meson: mark PM functions as __maybe_unused 2019-09-10 16:14:15 +02:00
rtc-meson.c
…
rtc-moxart.c
…
rtc-mpc5121.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-mrst.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
rtc-msm6242.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-mt6397.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-mt7622.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-mv.c
…
rtc-mxc.c rtc: mxc: use spin_lock_irqsave instead of spin_lock_irq in IRQ context 2019-08-12 23:04:25 +02:00
rtc-mxc_v2.c rtc: mxc_v2: use devm_platform_ioremap_resource() to simplify code 2019-07-22 22:16:12 +02:00
rtc-omap.c ARM: SoC-related driver updates 2019-05-16 09:19:14 -07:00
rtc-opal.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114 2019-05-24 17:39:01 +02:00
rtc-palmas.c
…
rtc-pcap.c rtc: pcap: convert to SPDX identifier 2019-05-08 22:14:36 +02:00
rtc-pcf2123.c rtc: pcf2123: add proper compatible string 2019-08-20 21:42:19 +02:00
rtc-pcf2127.c rtc: pcf2127: bugfix: watchdog build dependency 2019-08-27 18:24:15 +02:00
rtc-pcf8523.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-pcf8563.c rtc: pcf8563: let the core handle range offsetting 2019-09-01 10:57:47 +02:00
rtc-pcf8583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-pcf50633.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-pcf85063.c rtc: pcf85063: add RTC_VL_READ/RTC_VL_CLR support 2019-04-04 10:07:11 +02:00
rtc-pcf85363.c rtc: pcf85363/pcf85263: fix regmap error in set_time 2019-09-01 08:48:28 +02:00
rtc-pic32.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-pl030.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-pl031.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-pm8xxx.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-ps3.c rtc: ps3: set range 2019-04-04 10:07:10 +02:00
rtc-puv3.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-pxa.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-r7301.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-r9701.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rc5t583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
rtc-rk808.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-rp5c01.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-rs5c313.c
…
rtc-rs5c348.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rs5c372.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rtd119x.c
…
rtc-rv3028.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-rv3029c2.c rtc: rv3029: revert error handling patch to rv3029_eeprom_write() 2019-08-21 09:57:23 +02:00
rtc-rv8803.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-rx4581.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rx6110.c rtc: rx6110: declare missing of table 2019-04-29 15:53:42 +02:00
rtc-rx8010.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-rx8025.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-rx8581.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-s3c.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-s3c.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-s5m.c rtc: s5m: convert to i2c_new_dummy_device 2019-07-23 20:34:31 +02:00
rtc-s35390a.c rtc: s35390a: convert to devm_i2c_new_dummy_device() 2019-09-01 09:18:35 +02:00
rtc-sa1100.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-sa1100.h
…
rtc-sc27xx.c rtc: sc27xx: Remove clearing SPRD_RTC_POWEROFF_ALM_FLAG flag 2019-09-10 16:14:13 +02:00
rtc-sd3078.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-sh.c RTC for 5.2 2019-05-09 14:46:33 -07:00
rtc-sirfsoc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
rtc-snvs.c rtc: snvs: switch to rtc_time64_to_tm/rtc_tm_to_time64 2019-09-01 08:48:23 +02:00
rtc-spear.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-st-lpc.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-starfire.c
…
rtc-stk17ta8.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-stm32.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-stmp3xxx.c rtc: stmp3xxx: convert to SPDX identifier 2019-04-11 16:42:55 +02:00
rtc-sun4v.c rtc: sun4v: switch to SPDX identifier 2019-04-04 10:07:10 +02:00
rtc-sun6i.c RTC for 5.4 2019-09-22 11:05:43 -07:00
rtc-sunxi.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-tegra.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-test.c rtc: test: enable wakeup flags 2019-05-23 17:44:52 +02:00
rtc-tps6586x.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-tps65910.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-tps80031.c
…
rtc-twl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-tx4939.c rtc: Use dev_get_drvdata() 2019-04-29 15:53:43 +02:00
rtc-v3020.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-vr41xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
rtc-vt8500.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-wilco-ec.c platform/chrome: wilco_ec: Standardize mailbox interface 2019-04-15 16:07:42 +02:00
rtc-wm831x.c rtc: wm831x: Add IRQF_ONESHOT flag 2019-07-13 21:39:51 +02:00
rtc-wm8350.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-x1205.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-xgene.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-zynqmp.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
sysfs.c
…
systohc.c rtc: drop set_mms and set_mmss64 2019-05-08 22:14:36 +02:00