linux-kernel - Re: [PATCH 01/11] smp: Disable preemption explicitly in __csd_lock

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

Message-Id: <20B0E424-AF2A-4043-96A1-D0919E986A90@linux.dev>
Date: Thu, 5 Feb 2026 14:05:36 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Chuyi Zhou <zhouchuyi@...edance.com>
Cc: tglx@...utronix.de,
 mingo@...hat.com,
 luto@...nel.org,
 peterz@...radead.org,
 paulmck@...nel.org,
 bp@...en8.de,
 dave.hansen@...ux.intel.com,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/11] smp: Disable preemption explicitly in
 __csd_lock_wait



> On Feb 3, 2026, at 19:23, Chuyi Zhou <zhouchuyi@...edance.com> wrote:
> 
> The latter patches will enable preemption before csd_lock_wait(), which
> could break csdlock_debug. Because the slice of other tasks on the CPU may
> be accounted between ktime_get_mono_fast_ns() calls. Disable preemption
> explicitly in __csd_lock_wait(). This is a preparation for the next
> patches.
> 
> Signed-off-by: Chuyi Zhou <zhouchuyi@...edance.com>

Acked-by: Muchun Song <muchun.song@...ux.dev>

Thanks.