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linux-stable/kernel/power
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Dexuan Cui 3904bdf082 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>
2020-05-06 08:13:28 +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() 2020-05-06 08:13:28 +02:00
Kconfig PM / sleep: wakeup: Fix build error caused by missing SRCU support 2018-08-15 00:07:08 +02:00
main.c PM / reboot: Eliminate race between reboot and suspend 2018-08-06 12:35:20 +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 2018-02-02 23:33:50 +01:00
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 PM / QoS: Drop redundant declaration of pm_qos_get_value() 2018-05-28 23:21:41 +02:00
snapshot.c PM / hibernate: memory_bm_find_bit(): Tighten node optimisation 2020-01-09 10:18:58 +01:00
suspend.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-10-12 12:35:02 +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 PM / hibernate: cast PAGE_SIZE to int when comparing with error code 2018-07-02 11:48:30 +02:00
user.c PM / reboot: Eliminate race between reboot and suspend 2018-08-06 12:35:20 +02:00
wakelock.c PM / wakeup: Only update last time for active wakeup sources 2018-05-10 11:39:19 +02:00