From: Madhavan Srinivasan <maddy@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org,
Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Athira Rajeev <atrajeev@linux.ibm.com>,
Christophe Leroy <chleroy@kernel.org>,
linux-kernel@vger.kernel.org,
Sourabh Jain <sourabhjain@linux.ibm.com>,
Ritesh Harjani <ritesh.list@gmail.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>
Subject: Re: [PATCH v3 0/3] powerpc: fix preempt_count imbalances in perf and kexec paths
Date: Sat, 20 Jun 2026 03:29:08 +0530 [thread overview]
Message-ID: <178190618809.653308.7398309926910414335.b4-ty@linux.ibm.com> (raw)
In-Reply-To: <20260605082912.305100-1-aboorvad@linux.ibm.com>
On Fri, 05 Jun 2026 13:59:09 +0530, Aboorva Devarajan wrote:
> This patch series fixes some minor preempt_count bookkeeping issues in
> arch/powerpc/ found during a preemption leak audit prompted by the
> lazy/full preemption model changes. These are get_cpu/put_cpu and
> get_cpu_var/put_cpu_var pairing errors that leave preempt_count
> incorrectly elevated or underflowed.
>
> v2 -> v3:
> - Patches 2 and 3: use raw_smp_processor_id() instead of
> smp_processor_id(). Both paths run with interrupts
> disabled, so the plain accessor is sufficient.
>
> [...]
Applied to powerpc/next.
[1/3] powerpc/perf: fix preempt count underflow in fsl_emb_pmu_del
https://git.kernel.org/powerpc/c/81e3a86030462824a67d697739cf3f387f4ba350
[2/3] powerpc/powernv: fix preempt count leak in pnv_kexec_wait_secondaries_down
https://git.kernel.org/powerpc/c/0ecd26e93e698c8327521910fc6296f5b84a4b92
[3/3] powerpc/kexec: fix double get_cpu() imbalance in kexec_prepare_cpus
https://git.kernel.org/powerpc/c/5c86f1c1f972761a04bf22f4c0618d1aa714185b
cheers
prev parent reply other threads:[~2026-06-19 21:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-05 8:29 [PATCH v3 0/3] powerpc: fix preempt_count imbalances in perf and kexec paths Aboorva Devarajan
2026-06-05 8:29 ` [PATCH v3 1/3] powerpc/perf: fix preempt count underflow in fsl_emb_pmu_del Aboorva Devarajan
2026-06-05 8:29 ` [PATCH v3 2/3] powerpc/powernv: fix preempt count leak in pnv_kexec_wait_secondaries_down Aboorva Devarajan
2026-06-05 8:29 ` [PATCH v3 3/3] powerpc/kexec: fix double get_cpu() imbalance in kexec_prepare_cpus Aboorva Devarajan
2026-06-05 11:03 ` Shrikanth Hegde
2026-06-19 6:15 ` [PATCH v3 0/3] powerpc: fix preempt_count imbalances in perf and kexec paths Ritesh Harjani
2026-06-19 21:59 ` Madhavan Srinivasan [this message]
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