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 07E791E6DFF for ; Fri, 11 Oct 2024 22:50:37 +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=1728687037; cv=none; b=H8fn2wkvH0ed/9ekqwdbYmlDP3oPh5Ta59hb4CFCxM0qElN2hWQjSzm+N8E0XX/J26reXn8f8ZXoDNxxtCwXt8cMHj7ZV/zHclU7uZMGFPwOUHh8d97gX0EYwEqjsBYftHhFAnmykI6TIO5x44i8cs2mIIrQzViKIHRlVZ4aJPc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728687037; c=relaxed/simple; bh=tHn9ZA5WAy/QqpCsiHvIraa+HJy3I589bsbtOjbBggM=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=Z29Bh+eNTtGJ0zBF5PYlDn2G4N93bMchszVy0Kp5IQRm8T3wOb7GZDvNU/XYQUIHI4mCUb6LjYZhYvhWVcqEenRU2PabFESVUvthaxW0PDYwMQVVpNvxjs8LW4393mih9oxuxp6qpojIXr9LtDyWHRDTf3rJ6tIThyuIo6/DMY8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pS/NO1dC; 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="pS/NO1dC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3C56C4CECE; Fri, 11 Oct 2024 22:50:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728687036; bh=tHn9ZA5WAy/QqpCsiHvIraa+HJy3I589bsbtOjbBggM=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=pS/NO1dCExZAqRNAMifDvIP6pdJ/Jtl7BOlUjTcg8DwDzpe11Tz/FDv7oCrAQGrgB hkSvDzIj91YlTEAo7kgHhA5pnaQlGxrciy7FRKOSyRVziISCM1iej4ywOy9c82ME/A CupkbgvzH1zXNMIJ3FeolJNXETqIG8ChcFbBkUpR54X3zfhI4Uo4Zv7Xjau6eCrrk+ I8xL9TKJGqjhnclesdWSL0xNLVIQ7cR8JQjTCUDABwCzZuYPElNNozSk8CxDVyhuOd jv0l3urKLth8AbrBu7HqZIzkEEP9F51fkSW2fLJdK6VdGqtYJ+bySOxbinVJ7kEsk5 OtlCJQ0Xb7KRQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id ADE4538363CB; Fri, 11 Oct 2024 22:50:42 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net-next 0/5] net: remove RTNL from fib_seq_sum() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <172868704123.3018281.4916763990451712900.git-patchwork-notify@kernel.org> Date: Fri, 11 Oct 2024 22:50:41 +0000 References: <20241009184405.3752829-1-edumazet@google.com> In-Reply-To: <20241009184405.3752829-1-edumazet@google.com> To: Eric Dumazet Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, dsahern@kernel.org, kuniyu@amazon.com, jiri@resnulli.us, netdev@vger.kernel.org, eric.dumazet@gmail.com Hello: This series was applied to netdev/net-next.git (main) by Jakub Kicinski : On Wed, 9 Oct 2024 18:44:00 +0000 you wrote: > This series is inspired by a syzbot report showing > rtnl contention and one thread blocked in: > > 7 locks held by syz-executor/10835: > #0: ffff888033390420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline] > #0: ffff888033390420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x224/0xc90 fs/read_write.c:679 > #1: ffff88806df6bc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325 > #2: ffff888026fcf3c8 (kn->active#50){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326 > #3: ffffffff8f56f848 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166 > #4: ffff88805e0140e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] > #4: ffff88805e0140e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1005 > #5: ffff88805c5fb250 (&devlink->lock_key#55){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534 > #6: ffffffff8fcd1748 (rtnl_mutex){+.+.}-{3:3}, at: fib_seq_sum+0x31/0x290 net/core/fib_notifier.c:46 > > [...] Here is the summary with links: - [net-next,1/5] fib: rules: use READ_ONCE()/WRITE_ONCE() on ops->fib_rules_seq https://git.kernel.org/netdev/net-next/c/a716ff52bebf - [net-next,2/5] ipv4: use READ_ONCE()/WRITE_ONCE() on net->ipv4.fib_seq https://git.kernel.org/netdev/net-next/c/16207384d292 - [net-next,3/5] ipv6: use READ_ONCE()/WRITE_ONCE() on fib6_table->fib_seq https://git.kernel.org/netdev/net-next/c/e60ea4544776 - [net-next,4/5] ipmr: use READ_ONCE() to read net->ipv[46].ipmr_seq https://git.kernel.org/netdev/net-next/c/055202b16c58 - [net-next,5/5] net: do not acquire rtnl in fib_seq_sum() https://git.kernel.org/netdev/net-next/c/2698acd6ea47 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html