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linux-stable/kernel/power
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Dexuan Cui 3ad04be60c PM: hibernate: Freeze kernel threads in software_resume() 
commit 2351f8d295 upstream.

Currently the kernel threads are not frozen in software_resume(), so
between dpm_suspend_start(PMSG_QUIESCE) and resume_target_kernel(),
system_freezable_power_efficient_wq can still try to submit SCSI
commands and this can cause a panic since the low level SCSI driver
(e.g. hv_storvsc) has quiesced the SCSI adapter and can not accept
any SCSI commands: https://lkml.org/lkml/2020/4/10/47

At first I posted a fix (https://lkml.org/lkml/2020/4/21/1318) trying
to resolve the issue from hv_storvsc, but with the help of
Bart Van Assche, I realized it's better to fix software_resume(),
since this looks like a generic issue, not only pertaining to SCSI.

Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-05 19:15:50 +02:00
..
autosleep.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
console.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hibernate.c PM: hibernate: Freeze kernel threads in software_resume() 2020-05-05 19:15:50 +02:00
Kconfig PM / sleep: wakeup: Fix build error caused by missing SRCU support 2018-09-09 19:55:58 +02:00
main.c ACPI / PM: Check low power idle constraints for debug only 2017-08-18 01:54:22 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
power.h x86/power: Fix swsusp_arch_resume prototype 2018-04-26 11:02:16 +02:00
poweroff.c
process.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qos.c power, workqueue: remove keventd_up() usage 2016-09-17 13:18:21 -04:00
snapshot.c PM / hibernate: memory_bm_find_bit(): Tighten node optimisation 2020-01-09 10:17:53 +01:00
suspend.c PM / wakeup: Make s2idle_lock a RAW_SPINLOCK 2018-08-03 07:50:29 +02:00
suspend_test.c PM / s2idle: Rename PM_SUSPEND_FREEZE to PM_SUSPEND_TO_IDLE 2017-08-11 01:29:55 +02:00
swap.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
user.c PM / hibernate: Fix oops at snapshot_write() 2018-07-17 11:39:32 +02:00
wakelock.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00