linux-kernel - [PATCH v5 0/2] cpuhp: fix some st->target issues

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 17 Nov 2022 11:23:27 -0500
From:   Phil Auld <pauld@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Valentin Schneider <vschneid@...hat.com>,
        Steven Price <steven.price@....com>,
        Mark Rutland <mark.rutland@....com>,
        Frederic Weisbecker <frederic@...nel.org>, pauld@...hat.com
Subject: [PATCH v5 0/2] cpuhp: fix some st->target issues

Fix a few cpuhp related issues.

The first prevents target_store() from calling cpu_down() when
target == state which prevents the cpu being incorrectly marked
as dying.  The second just makes the boot cpu have a valid cpuhp
target rather than 0 (CPU_OFFLINE) while being in state
CPU_ONLINE.

v3: Added code to make sure st->target == target in the nop case.

v4: Use WARN_ON in the case where state == target but st->target does
not.

v5: Fixed lowercase on first patch title and cleaned up cover letter.
Rebased on v6.1-rc5.

Phil Auld (2):
  cpuhp: Make target_store() a nop when target == state
  cpuhp: Set cpuhp target for boot cpu

 cpu.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

-- 
2.31.1