From nobody Mon Feb 9 18:46:06 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 97E0E222565; Mon, 2 Feb 2026 21:04:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770066282; cv=none; b=eVfckwzyx5ASWnG9eu/GBFbOKBzajz4ZTzSV4tbQHRKKfsB4Av6YrdpRYL0s3Bgf4FXqfbPSkX4k0xSc0CArOmstKSZzyXZIDXwhoJCL+vGXkLw8Ze2uzHX0WTnhlFifnFdhxkvVJ82UTHwk9s1/eVtWFFUdtyiDeG6OS4wGHpE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770066282; c=relaxed/simple; bh=+dhCdBEsIiNm9jFTYY0OVo5eAeLFBPugkNN84DY1eB4=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=SZKPNHNfqKE1MYfGhu9Yw/b9dlsNft+xlEO5BsobP1CK881bNsst16h2VXEivFJLJVHRCob6E/BKoYLl+83VJ77uAIFWesz6jKh8BitVgaIk9NennRN7v5OnQ2p6O4OEdSKPk18/FFShC2ubDDbm/aErOsRvq4ZzL0TzLqgTqyk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=0tJ6PSMN; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=w2P86WNe; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="0tJ6PSMN"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="w2P86WNe" Date: Mon, 02 Feb 2026 21:04:38 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1770066280; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=x7xalSVKFyUhuZvK4gJlnPsI2klQoWZuADHJifLfjEg=; b=0tJ6PSMNPlGQUXqMMQJAobMNkcPcSktL0HfJJo/N0P12kq0GaJQS30Ge0ejJIuWOMr8aWG IP+fSzXzBMcqc8UG7EMq5LgV3/HKQtN3Nvp3/bHaL6RaAQe8RqAKwb32+EdKPCzX0cetmO LmaTKVMYrvSnePE5Rn3LnGD51QQ0b/PIp3mwq9UdCLbIOjHWLy8AXqr/4TZUKjSUu4oUAv MCSSs4oANOuUeVEftqla1EHBOo1NRYEtkgae5NiWxu+Yuvkt/nS+z26+U9qN9Ld55xsPKI KFVxwDOte1Qod1PN06qpStTaQsZuE+YoY0Zz+Kqs1cBWhKQBBFlB/7D584kyWw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1770066280; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=x7xalSVKFyUhuZvK4gJlnPsI2klQoWZuADHJifLfjEg=; b=w2P86WNeMsogTI5NCWJezU3QvMrvjPUr++zRxx3A/I1kfaAg8ZFV5NVkBmRtbHNqqiP9Gi kZfDgLEfh/cr/WDA== From: "tip-bot2 for Breno Leitao" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: perf/core] uprobes: Fix incorrect lockdep condition in filter_chain() Cc: Breno Leitao , "Peter Zijlstra (Intel)" , Oleg Nesterov , Andrii Nakryiko , "Masami Hiramatsu (Google)" , stable@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260128-uprobe_rcu-v2-1-994ea6d32730@debian.org> References: <20260128-uprobe_rcu-v2-1-994ea6d32730@debian.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <177006627890.2495410.15132261871969236543.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the perf/core branch of tip: Commit-ID: a56a38fd9196fc89401e498d70b7aa9c9679fa6e Gitweb: https://git.kernel.org/tip/a56a38fd9196fc89401e498d70b7aa9c9= 679fa6e Author: Breno Leitao AuthorDate: Wed, 28 Jan 2026 10:16:11 -08:00 Committer: Peter Zijlstra CommitterDate: Mon, 02 Feb 2026 22:01:07 +01:00 uprobes: Fix incorrect lockdep condition in filter_chain() The list_for_each_entry_rcu() in filter_chain() uses rcu_read_lock_trace_held() as the lockdep condition, but the function holds consumer_rwsem, not the RCU trace lock. This gives me the following output when running with some locking debug option enabled: kernel/events/uprobes.c:1141 RCU-list traversed in non-reader section!! filter_chain register_for_each_vma uprobe_unregister_nosync __probe_event_disable Remove the incorrect lockdep condition since the rwsem provides sufficient protection for the list traversal. Fixes: cc01bd044e6a ("uprobes: travers uprobe's consumer list locklessly un= der SRCU protection") Signed-off-by: Breno Leitao Signed-off-by: Peter Zijlstra (Intel) Acked-by: Oleg Nesterov Acked-by: Andrii Nakryiko Acked-by: Masami Hiramatsu (Google) Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260128-uprobe_rcu-v2-1-994ea6d32730@debian= .org --- kernel/events/uprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index dfbce02..424ef22 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1138,7 +1138,7 @@ static bool filter_chain(struct uprobe *uprobe, struc= t mm_struct *mm) bool ret =3D false; =20 down_read(&uprobe->consumer_rwsem); - list_for_each_entry_rcu(uc, &uprobe->consumers, cons_node, rcu_read_lock_= trace_held()) { + list_for_each_entry(uc, &uprobe->consumers, cons_node) { ret =3D consumer_filter(uc, mm); if (ret) break;