From: K Prateek Nayak <kprateek.nayak@amd.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Nathan Chancellor <nathan@kernel.org>,
Valentin Schneider <vschneid@redhat.com>,
"Dietmar Eggemann" <dietmar.eggemann@arm.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>,
Chen Yu <yu.c.chen@intel.com>, <linux-kernel@vger.kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
"Gautham R. Shenoy" <gautham.shenoy@amd.com>, <x86@kernel.org>,
Kees Cook <keescook@chromium.org>
Subject: Re: [PATCH] sched/topology: Initialize sd_span after assignment to *sd
Date: Mon, 23 Mar 2026 22:54:50 +0530 [thread overview]
Message-ID: <10c3eaa8-9c6a-4e5d-bf77-06b63b59a57b@amd.com> (raw)
In-Reply-To: <20260323093627.GY3738010@noisy.programming.kicks-ass.net>
Hello Peter,
On 3/23/2026 3:06 PM, Peter Zijlstra wrote:
> However the way we allocate space for flex arrays is: sizeof(*obj) +
> count * sizeof(*obj->member); this means that we do have sufficient
> space, irrespective of this extra padding.
>
>
> Does this work?
Solves the panic on the setup shared by Nathan and KASAN hasn't
noted anything in my baremetal testing so feel free to include:
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
--
Thanks and Regards,
Prateek
next prev parent reply other threads:[~2026-03-23 17:25 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-12 4:44 [PATCH v4 0/9] sched/topology: Optimize sd->shared allocation K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 1/9] sched/topology: Compute sd_weight considering cpuset partitions K Prateek Nayak
2026-03-12 9:34 ` Peter Zijlstra
2026-03-12 9:59 ` K Prateek Nayak
2026-03-12 10:01 ` Peter Zijlstra
2026-03-12 10:09 ` K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-20 23:58 ` Nathan Chancellor
2026-03-21 3:36 ` K Prateek Nayak
2026-03-21 7:33 ` Chen, Yu C
2026-03-21 7:47 ` Chen, Yu C
2026-03-21 8:59 ` K Prateek Nayak
2026-03-21 9:45 ` K Prateek Nayak
2026-03-21 10:13 ` K Prateek Nayak
2026-03-21 12:48 ` Chen, Yu C
2026-03-24 2:54 ` K Prateek Nayak
2026-03-21 14:13 ` Shrikanth Hegde
2026-03-21 15:14 ` K Prateek Nayak
2026-03-21 16:38 ` [PATCH] sched/topology: Initialize sd_span after assignment to *sd K Prateek Nayak
2026-03-23 9:08 ` Shrikanth Hegde
2026-03-23 17:34 ` K Prateek Nayak
2026-03-23 9:36 ` Peter Zijlstra
2026-03-23 13:24 ` Jon Hunter
2026-03-23 15:36 ` Chen, Yu C
2026-03-23 17:24 ` K Prateek Nayak [this message]
2026-03-23 22:41 ` Nathan Chancellor
2026-03-24 9:10 ` [tip: sched/core] sched/topology: Fix sched_domain_span() tip-bot2 for Peter Zijlstra
2026-03-12 4:44 ` [PATCH v4 2/9] sched/topology: Extract "imb_numa_nr" calculation into a separate helper K Prateek Nayak
2026-03-12 13:37 ` kernel test robot
2026-03-12 15:42 ` K Prateek Nayak
2026-03-12 16:02 ` Peter Zijlstra
2026-03-16 0:18 ` Dietmar Eggemann
2026-03-16 3:41 ` K Prateek Nayak
2026-03-16 8:24 ` Dietmar Eggemann
2026-03-16 8:50 ` K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 3/9] sched/topology: Allocate per-CPU sched_domain_shared in s_data K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 4/9] sched/topology: Switch to assigning "sd->shared" from s_data K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 5/9] sched/topology: Remove sched_domain_shared allocation with sd_data K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 6/9] sched/core: Check for rcu_read_lock_any_held() in idle_get_state() K Prateek Nayak
2026-03-12 9:46 ` Peter Zijlstra
2026-03-12 10:06 ` K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 7/9] sched/fair: Remove superfluous rcu_read_lock() in the wakeup path K Prateek Nayak
2026-03-15 23:36 ` Dietmar Eggemann
2026-03-16 3:19 ` K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] PM: EM: Switch to rcu_dereference_all() in " tip-bot2 for Dietmar Eggemann
2026-03-18 8:08 ` [tip: sched/core] sched/fair: Remove superfluous rcu_read_lock() in the " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 8/9] sched/fair: Simplify the entry condition for update_idle_cpu_scan() K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-12 4:44 ` [PATCH v4 9/9] sched/fair: Simplify SIS_UTIL handling in select_idle_cpu() K Prateek Nayak
2026-03-18 8:08 ` [tip: sched/core] " tip-bot2 for K Prateek Nayak
2026-03-16 0:22 ` [PATCH v4 0/9] sched/topology: Optimize sd->shared allocation Dietmar Eggemann
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