commit ff7124b91f52412696e66683b37a5724c303cc11
Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date:   Thu Nov 18 14:01:34 2021 +0100

    Linux 5.14.20
    
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit 1b86960dc451412e7029b267e9e87536fdd554cb
Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date:   Thu Nov 18 13:16:12 2021 +0100

    Revert "x86: Fix get_wchan() to support the ORC unwinder"
    
    This reverts commit f270511247a5b6257b84db17883e0b1189bf5e16 which is
    commit bc9bbb81730ea667c31c5b284f95ee312bab466f upstream.
    
    It has been reported to be causing problems, and is being reworked
    upstream and has been dropped from the current 5.15.y stable queue until
    it gets resolved.
    
    Reported-by: Chris Rankin <rankincj@gmail.com>
    Reported-by: Thorsten Leemhuis <linux@leemhuis.info>
    Link: https://lore.kernel.org/r/ed000478-2a60-0066-c337-a04bffc112b1@leemhuis.info
    Cc: Qi Zheng <zhengqi.arch@bytedance.com>
    Cc: Stephen Rothwell <sfr@canb.auug.org.au>
    Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Sasha Levin <sashal@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit 961913f45ff64ee68b689ae8070e1ab42108d02b
Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date:   Thu Nov 18 13:15:48 2021 +0100

    Revert "sched: Add wrapper for get_wchan() to keep task blocked"
    
    This reverts commit e9ede14c116f1a6246eee89d320d60a90a86b5d5 which is
    commit 42a20f86dc19f9282d974df0ba4d226c865ab9dd upstream.
    
    It has been reported to be causing problems, and is being reworked
    upstream and has been dropped from the current 5.15.y stable queue until
    it gets resolved.
    
    Reported-by: Chris Rankin <rankincj@gmail.com>
    Reported-by: Thorsten Leemhuis <linux@leemhuis.info>
    Link: https://lore.kernel.org/r/ed000478-2a60-0066-c337-a04bffc112b1@leemhuis.info
    Cc: Stephen Rothwell <sfr@canb.auug.org.au>
    Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Geert Uytterhoeven <geert@linux-m68k.org>
    Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    Cc: Mark Rutland <mark.rutland@arm.com>
    Cc: Sasha Levin <sashal@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit b51c1a592faaf114b33f56f25aec757d21a826e0
Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date:   Thu Nov 18 13:15:35 2021 +0100

    Revert "x86: Fix __get_wchan() for !STACKTRACE"
    
    This reverts commit e1ff40b6194f09c1dd0f45b94fdf30c0374b5823 which is
    commit 5d1ceb3969b6b2e47e2df6d17790a7c5a20fcbb4 upstream.
    
    It has been reported to be causing problems, and is being reworked
    upstream and has been dropped from the current 5.15.y stable queue until
    it gets resolved.
    
    Reported-by: Chris Rankin <rankincj@gmail.com>
    Reported-by: Thorsten Leemhuis <linux@leemhuis.info>
    Link: https://lore.kernel.org/r/ed000478-2a60-0066-c337-a04bffc112b1@leemhuis.info
    Cc: Stephen Rothwell <sfr@canb.auug.org.au>
    Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Sasha Levin <sashal@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>