From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 CC49738F24D for ; Thu, 19 Mar 2026 19:10:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773947415; cv=none; b=eQUTzMIj2W5zRREd7lYPZOiejCyXZlMnaezE/sb9nvuaV87jiK1TQpBAThzqK6cuYUwf2jxmowglz2aC6rP7vHdiJawwsQ/5s+2tlbmtLaiiW+m2UHTGs28g1t7vq6N7TkCNr7dA/vPZbtGwuXVFRnF8XqZv7OvW0x2kOchCsfg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773947415; c=relaxed/simple; bh=MqWfU3Tmbt/ruf7zCUsFkNefLnv08Zd3X9KKNt75D5E=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=iu6O4S6uDD/OPPK2gQrkF2S7lU22T+bFV8AYEotWW7+3v7lIbfdAkSy2sBcJGAhlC+962iOk/z57T9fN1Xicvju4Ai9R12mrUhi1SqSYoJnGPTj3j46JFN67EakEZxsePHtVlhdZCdXMYfkwzysMaApMU3HpjiapSHEWvJct0TQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XGce47vk; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XGce47vk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D2E0C19424; Thu, 19 Mar 2026 19:10:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773947415; bh=MqWfU3Tmbt/ruf7zCUsFkNefLnv08Zd3X9KKNt75D5E=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=XGce47vkgJRuWb4AUD3yInY7iZxlTZqF/qckY9ej2agp/k6+SnC8uYgoryWcQbmzy dy1Zz648FkAs+Qy4ayfoF7A45d9XQ2P72KJX2hAjXd+2aP63lu8PLOszXgzO0JTrnD WN3v+qgN72JLzy2JMuWZdGiDBDl9UcOkVp0hGzkqGnWBcjCbXXSJOKutjodhffpSU8 qE5Aohw02qB89U1KBuWpirhn+x8fU+iwynoa6yRJCDuVAOuebWT9JlvZXyx+Ed3N+1 WfOqfchmlJpGb47oXs/O8UqIJszl6qXNZxq7N57ZZsWaORU++6GrNmZ8pHml1Zh7SF vNxJ0/7plMi9w== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3FDB339302F6; Thu, 19 Mar 2026 19:10:07 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next v2 1/1] bpf: Do not allow deleting local storage in NMI From: patchwork-bot+netdevbpf@kernel.org Message-Id: <177394740604.1768581.14896493417337361938.git-patchwork-notify@kernel.org> Date: Thu, 19 Mar 2026 19:10:06 +0000 References: <20260319025716.2361065-1-ameryhung@gmail.com> In-Reply-To: <20260319025716.2361065-1-ameryhung@gmail.com> To: Amery Hung Cc: bpf@vger.kernel.org, alexei.starovoitov@gmail.com, andrii@kernel.org, daniel@iogearbox.net, memxor@gmail.com, martin.lau@kernel.org, kernel-team@meta.com Hello: This patch was applied to bpf/bpf-next.git (master) by Martin KaFai Lau : On Wed, 18 Mar 2026 19:57:16 -0700 you wrote: > Currently, local storage may deadlock when deferring freeing selem or > local storage through kfree_rcu(), call_rcu() or call_rcu_tasks_trace() > in NMI or reentrant. Since deleting selem in NMI is an unlikely use > case, partially mitigate it by returning error when calling from > bpf_xxx_storage_delete() helpers in NMI. Note that, it is still possible > to deadlock through reentrant. A full mitigation requires returning > error when irqs_disabled() is true, which, however is too heavy-handed > for bpf_xxx_storage_delete(). > > [...] Here is the summary with links: - [bpf-next,v2,1/1] bpf: Do not allow deleting local storage in NMI https://git.kernel.org/bpf/bpf-next/c/350de5b8a9be You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html