From: K Prateek Nayak <kprateek.nayak@amd.com>
To: Breno Leitao <leitao@debian.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>,
Andrea Righi <arighi@nvidia.com>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
Christian Loehle <christian.loehle@arm.com>,
Phil Auld <pauld@redhat.com>, Koba Ko <kobak@nvidia.com>,
Felix Abecassis <fabecassis@nvidia.com>,
Balbir Singh <balbirs@nvidia.com>,
Joel Fernandes <joelagnelf@nvidia.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: kmemleak: sched_domain_shared leaked on asymmetric-capacity + SCHED_CACHE
Date: Tue, 7 Jul 2026 19:29:31 +0530 [thread overview]
Message-ID: <fc6fe063-2983-4d1c-b317-382d153601bb@amd.com> (raw)
In-Reply-To: <akz_f6fAIO3SD2j5@gmail.com>
Hello Breno,
On 7/7/2026 7:01 PM, Breno Leitao wrote:
>> I may have found what might be happening. Since the last SD_SHARE_LLC
>> and the first SD_ASYM_CPUCAPACITY_FULL overlap,
>> init_sched_domain_shared() for SD_SHARE_LLC might just be overwriting
>> the assignment from claim_asym_sched_domain_shared() and we are left
>> with a non-zero refcounted shared that evades claim_allocations() but
>> is not used anywhere either.
>>
>> Breno, could you try the below diff:
>
> Sure, I've tested it and I don't see the kmemleak report anymore, that
> solved the issue I've raised.
>
> Feel free to include the following if you are planning to send it to the
> list:
>
> Tested-by: Breno Leitao <leitao@debian.org>
Thanks a ton! I'll send out an official patch shortly for Peter to pick
up once he is back from holidays after some more testing. Thank you
again for the report and testing. Much appreciated _/\_
--
Thanks and Regards,
Prateek
next prev parent reply other threads:[~2026-07-07 13:59 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-09 18:07 [PATCH v6 0/5 RESEND] sched/fair: SMT-aware asymmetric CPU capacity Andrea Righi
2026-05-09 18:07 ` [PATCH 1/5] sched/fair: Drop redundant RCU read lock in NOHZ kick path Andrea Righi
2026-05-11 13:04 ` Vincent Guittot
2026-05-15 6:49 ` Shrikanth Hegde
2026-05-16 5:45 ` Andrea Righi
2026-05-16 17:15 ` Shrikanth Hegde
2026-05-20 8:34 ` [tip: sched/core] " tip-bot2 for Andrea Righi
2026-05-21 19:47 ` [PATCH 1/5] " Marek Szyprowski
2026-05-21 20:13 ` Andrea Righi
2026-05-09 18:07 ` [PATCH 2/5] sched/fair: Attach sched_domain_shared to sd_asym_cpucapacity Andrea Righi
2026-05-11 13:04 ` Vincent Guittot
2026-05-15 10:05 ` Shrikanth Hegde
2026-05-16 5:58 ` [PATCH v2 " Andrea Righi
2026-05-16 17:19 ` Shrikanth Hegde
2026-05-18 20:58 ` Peter Zijlstra
2026-05-18 21:31 ` Andrea Righi
2026-05-19 5:52 ` K Prateek Nayak
2026-05-19 6:43 ` Andrea Righi
2026-05-19 7:47 ` K Prateek Nayak
2026-05-19 7:54 ` Andrea Righi
2026-05-19 8:46 ` Peter Zijlstra
2026-05-19 11:27 ` K Prateek Nayak
2026-05-19 11:47 ` Peter Zijlstra
2026-05-25 8:30 ` Chen, Yu C
2026-05-20 8:34 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-07-03 10:22 ` kmemleak: sched_domain_shared leaked on asymmetric-capacity + SCHED_CACHE Breno Leitao
2026-07-03 10:35 ` K Prateek Nayak
2026-07-03 16:19 ` Breno Leitao
2026-07-04 6:16 ` K Prateek Nayak
2026-07-06 14:38 ` Dietmar Eggemann
2026-07-07 4:11 ` K Prateek Nayak
2026-07-07 13:31 ` Breno Leitao
2026-07-07 13:59 ` K Prateek Nayak [this message]
2026-07-07 15:31 ` Dietmar Eggemann
2026-05-09 18:07 ` [PATCH 3/5] sched/fair: Prefer fully-idle SMT cores in asym-capacity idle selection Andrea Righi
2026-05-11 13:07 ` Vincent Guittot
2026-05-11 13:45 ` Andrea Righi
2026-05-11 14:25 ` [PATCH v2 " Andrea Righi
2026-05-20 8:34 ` [tip: sched/core] " tip-bot2 for Andrea Righi
2026-05-09 18:07 ` [PATCH 4/5] sched/fair: Reject misfit pulls onto busy SMT siblings on asym-capacity Andrea Righi
2026-05-11 13:07 ` Vincent Guittot
2026-05-15 10:09 ` Shrikanth Hegde
2026-05-16 9:04 ` Andrea Righi
2026-05-20 8:34 ` [tip: sched/core] " tip-bot2 for Andrea Righi
2026-05-09 18:07 ` [PATCH 5/5] sched/fair: Add SIS_UTIL support to select_idle_capacity() Andrea Righi
2026-05-11 13:08 ` Vincent Guittot
2026-05-20 8:34 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
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