From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792660207; b=DXkBnxZbHns+Fp4NzZBpIYLwQ9dq8onuzkx202R5V+VkKS0G/9zstNjQ3rRLGGqQVcyT QgrjrPX9g0Dz/Lnf2ByQhKQ4wol70ZuSX6jHRv/fthvC7emxaH9XFOx8reY8AHXND2/QI 3FP6hN/VsA3Q8xqeHVNfJmJEY6G6Ic4v/RmRNPWNjQPlvdNOcJCz3LQU7w7dDtOGKoeRM TctVmTJKneL9xmIAFqUU03bdiy2mcjVpjNxjsVZvCFQErMLoVeZXpuxgr42SopPr+4XFi P2AhozsSudyKsd4WlHqUAeqwtVMssAFUFXyRbEJ0gz8QRZ17dJyC5onEXjNdSKZI8Uw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792660207; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=pfjhQGxprB6OEE7+13kybOYl138N6Xpw872x1WZ4avA=; b=mZEcpO6KamvuXF2Nkafp+hDWkM/Zs4DkhCmQgGi+5YbzUtHyA98xGAdgx0HXRc4YFVlb L8VfYClBBF0wmEX48QwVJRpkJpTW/NE/e7tsD1rCviUsVy6ngCgCnkbWp0qsU5L9JKFtC yhSTYhNv9BMSiXpKyRIRfcXiYPd4pNhQpV+0kGvDB3G+CaM6qCyscqc6I3x1lGE8WjcoA 3K3YfVGUMxV+FLMJDRoV7jiqMOXe5BaCl8ozxmCMMc3XfGv/8w78yq+bOIoTlYk1P47+z fBSbh2z4nPzYSmtRHWWu6GcnVBw4DFeqM6OaaB7LRHDnDNus3OB2TVL3iGpT+czz6GA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=hgAuUTg5; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C1FDA606A325; Thu, 22 Oct 2026 09:10:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=hgAuUTg5 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45BEE1F000C6; Thu, 22 Oct 2026 09:10:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792660206; bh=pfjhQGxprB6OEE7+13kybOYl138N6Xpw872x1WZ4avA=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=hgAuUTg5qk+4RgfNZeek2sT1nzMJQuk+QHlXgxWQ+l3QcAJ+xaT3DIz4gTe3hXYcJ FE+AV5OqpdwHlxrC8HYehvBZExca53cDcVUoFqiyDvIAGzCUCPMWRmGye92KWT7vEz yC/1sCz6NxiMDqtvNp5rBZr87vVhSQD4FeklbtN6dtg5LC8s210dWhqLLqZtTqgBgY JYjfYIpVIcxupWVS49dcXxEd8hdUjTNNe2siqk/A8UfGr9UjlQ62dFS7OJk6ZTJJQi S2pI7D7vAb1FAiaB41VG8U9tYi69lat1aiXNYs+ZGCOFQcifQ6UBmf1c2BJu/1Noqc SozgKJAQ29f9g== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3A206380A97D; Thu, 22 Oct 2026 09:10:06 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v4] tipc: fix broadcast sender hang on last acker departure From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179266020503.1559266.4916570736972457348.git-patchwork-notify@kernel.org> Date: Thu, 22 Oct 2026 09:10:05 +0000 References: <20261019115859.3471295-1-bsdhenrymartin@gmail.com> In-Reply-To: <20261019115859.3471295-1-bsdhenrymartin@gmail.com> To: Henry Martin Cc: jmaloy@redhat.com, tung.quang.nguyen@est.tech, davem@davemloft.net, kuba@kernel.org, edumazet@kernel.org, pabeni@redhat.com, horms@kernel.org, ying.xue@windriver.com, netdev@vger.kernel.org, tipc-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, stable@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Paolo Abeni : On Mon, 19 Oct 2026 19:58:59 +0800 you wrote: > TIPC group broadcast senders are blocked while a replicast still has > outstanding member acks: tipc_group_bc_cong() returns true as long as > grp->bc_ackers is non-zero, and clears *grp->open, which is what > tipc_poll() uses to report EPOLLOUT (via tsk->group_is_open). > > When the last outstanding acker departs before acking, > tipc_group_delete_member() decrements grp->bc_ackers to zero but > never restores *grp->open. As a result poll(EPOLLOUT) never fires > again. A writer blocked in sendmsg() is only released if some other > wakeup happens after the deletion: with TIPC_GROUP_MEMBER_EVTS the > leave event delivery calls sk_data_ready() and wakes it, but without > member events nothing does and it sleeps indefinitely, since the > default send timeout is MAX_SCHEDULE_TIMEOUT. > > [...] Here is the summary with links: - [net,v4] tipc: fix broadcast sender hang on last acker departure https://git.kernel.org/netdev/net/c/f4377bf85887 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html