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From: Joel Fernandes <joelagnelf@nvidia.com>
To: Boqun Feng <boqun.feng@gmail.com>, Uladzislau Rezki <urezki@gmail.com>
Cc: Boqun Feng <boqun@fixme.name>,
	"Paul E. McKenney" <paulmck@kernel.org>,
	Joel Fernandes <joel@joelfernandes.org>,
	Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>,
	RCU <rcu@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>,
	Frederic Weisbecker <frederic@kernel.org>,
	Oleksiy Avramchenko <oleksiy.avramchenko@sony.com>
Subject: Re: [PATCH 1/3] rcu: Return early if callback is not specified
Date: Mon, 16 Jun 2025 22:25:11 -0400	[thread overview]
Message-ID: <e1e70709-b799-4da1-9f0f-9d222b315db4@nvidia.com> (raw)
In-Reply-To: <aEtAtLu6IIv_0QHs@tardis.local>



On 6/12/2025 5:03 PM, Boqun Feng wrote:
[..]
> 
>> The kernel robot reports it and it is already a strong indication that
>> the subsystem is not hardened against invalid inputs:
>>
>> "BUG: unable to handle kernel NULL pointer dereference in rcu_core (3)"
>>
>> so this in the rcu_core() which is part of RCU.
>>
>> But, anyway Joel should decide. I shared my opinion :)
>>
> 
> Of course, my point is that the urgency is not high enough so we have to
> put it in rcu/fixes, but it's a fix, and if Joel had the time to do
> it, feel free. Joel's decision.
> 
Yeah I feel Vlad's fix for a crash is important so I'll send this up to Linus
for 6.16 after some testing this week. For the other 2 patches, since that is
triggered by a trace point, I'll just let Neeraj take them for 6.17.

thanks,

 - Joel







      reply	other threads:[~2025-06-17  2:25 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-10 17:34 Uladzislau Rezki (Sony)
2025-06-10 17:34 ` [PATCH 2/3] rcu: Enable rcu_normal_wake_from_gp on small systems Uladzislau Rezki (Sony)
2025-06-10 18:34   ` Joel Fernandes
2025-06-11  9:25     ` Uladzislau Rezki
2025-06-10 17:34 ` [PATCH 3/3] Documentation/kernel-parameters: Update rcu_normal_wake_from_gp doc Uladzislau Rezki (Sony)
2025-06-10 19:33 ` [PATCH 1/3] rcu: Return early if callback is not specified Joel Fernandes
2025-06-11  9:24   ` Uladzislau Rezki
2025-06-12 17:30   ` Boqun Feng
2025-06-12 17:33     ` Boqun Feng
2025-06-12 17:46     ` Uladzislau Rezki
2025-06-12 21:03       ` Boqun Feng
2025-06-17  2:25         ` Joel Fernandes [this message]

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