From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from server-vie001.gnuweeb.org (server-vie001.gnuweeb.org [89.58.62.56]) (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 69987188CC9; Fri, 1 Aug 2025 18:10:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.58.62.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754071813; cv=none; b=prWYViawkycYCzSD8jY/f/sTyotv/xZL7FbzsUDLUF9PPLBSVfsbMN7f3qZqaVvV3GdYgyPxBQg1wVS5KXOGulZzDwWeUUkOy4ZOk+fraEqxuqaI+bc43bfDnxIhFe8HoeA19w6rxXxegi3r2fRbTkD1/i+JaZ50BgrxqjHoNOc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754071813; c=relaxed/simple; bh=2HAEMP5d+fgdtvDOZtHypn4YI4WVRLhNeheht+6R9wE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IKTxZhp6akbAbwbCjIrc65o+BG9An5q132cl5R2y9ZR/jMz1p0E4zJkpuujjiMv3JKKTn7G5udIeTzDbybuNX/S6AtW7wHtHys3/k8T4nbBC+JMLbnRrMadvhvejpqhAxaUrpkP3aLjRkBU0gm7UrnGjd9BK0RXBrBAwVWr9u94= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=gnuweeb.org; spf=pass smtp.mailfrom=gnuweeb.org; dkim=pass (2048-bit key) header.d=gnuweeb.org header.i=@gnuweeb.org header.b=WeKAwAss; arc=none smtp.client-ip=89.58.62.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=gnuweeb.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gnuweeb.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gnuweeb.org header.i=@gnuweeb.org header.b="WeKAwAss" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=new2025; t=1754071802; bh=2HAEMP5d+fgdtvDOZtHypn4YI4WVRLhNeheht+6R9wE=; h=Message-ID:Date:MIME-Version:User-Agent:Subject:To:Cc:References: Content-Language:From:In-Reply-To:Content-Type: Content-Transfer-Encoding:Message-ID:Date:From:Reply-To:Subject:To: Cc:In-Reply-To:References:Resent-Date:Resent-From:Resent-To: Resent-Cc:User-Agent:Content-Type:Content-Transfer-Encoding; b=WeKAwAss79UlIECZ8P/sZVtSjURtTlzTN+NEWcLH8YG9NetZL1T7Q6fRhSPbehe/U PHtWmPg0W2SSySDup12oLDwE92ccWucUETRc3MLWBP4/RAa6/NJ1bbQNGc6eBhBEyH Olz5gGBG7/2cF1H+TRWGCIEY5EceZB8cIrf0BSwAdeuc8q3jfCPcsWBWSAU/Wxrh+A XrcHxGmAV/1CtfV+2Nwzwt75DCdLAuOSRcxsI3Hq7TCPyzFXuPlNUUwl0U5o3RMn1Y vH2N65OcIGzM2NE5sJpTQSe21OsJyHCdhthtJFv7qtMte1zsf5jUR+MuwTKQTSD68W ru6MJpQueoKWw== Received: from [68.183.184.174] (unknown [68.183.184.174]) by server-vie001.gnuweeb.org (Postfix) with ESMTPSA id 35D263126FCD; Fri, 1 Aug 2025 18:09:59 +0000 (UTC) Message-ID: <0752dee6-43d6-4e1f-81d2-4248142cccd2@gnuweeb.org> X-Gw-Bpl: wU/cy49Bu1yAPm0bW2qiliFUIEVf+EkEatAboK6pk2H2LSy2bfWlPAiP3YIeQ5aElNkQEhTV9Q== Date: Sat, 2 Aug 2025 01:09:56 +0700 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net v2] net: usbnet: Avoid potential RCU stall on LINK_CHANGE event To: patchwork-bot+netdevbpf@kernel.org, John Ernberg Cc: Armando Budianto , Oliver Neukum , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Greg Kroah-Hartman , Linux Netdev Mailing List , Linux USB Mailing List , Linux Kernel Mailing List , stable@vger.kernel.org, GNU/Weeb Mailing List References: <20250723102526.1305339-1-john.ernberg@actia.se> <175346701201.3223523.6273511358134710495.git-patchwork-notify@kernel.org> Content-Language: en-US From: Ammar Faizi Autocrypt: addr=ammarfaizi2@gnuweeb.org; keydata= xsBNBGECqsMBCADy9cU6jMSaJECZXmbOE1Sox1zeJXEy51BRQNOEKbsR0dnRNUCl2tUR1rxd M+8V9TQUInBxERJcOdbUKibS8PQRy1g8LKJO/yrrMN8SFqnxYyX8M3WDz1PWuJ7DZE4gECtj RPuYN978y9w7Hi6micjraQeXbNp1S7MxEk5AxtlokO6u6Mrdm1WRNDytagkY61PP+5lJwiQS XOqiSLyT/ydEbG/hdBiOTOEN4J8MxE+p2xwhHjSTvU4ehq1b6b6N62pIA0r6NMRtdqp0c+Qv 3SVkTV8TVHcck60ZKaNtKQTsCObqUHKRurU1qmF6i2Zs+nfL/e+EtT0NVOVEipRZrkGXABEB AAHNJUFtbWFyIEZhaXppIDxhbW1hcmZhaXppMkBnbnV3ZWViLm9yZz7CwI4EEwEKADgCGwMF CwkIBwIGFQoJCAsCBBYCAwECHgECF4AWIQTok3JtyOTA3juiAQc2T7o0/xcKSwUCZ/1d1QAK CRA2T7o0/xcKS6fgCADlWw9ZPvM8Qv9Zdhle6zyCnwTnoZsadBnabY3NGFAo0YVNnByUy5HN inN92F1W71D06IrPJr/0rcCt1mJWM8TuQiU3LdEC+1Go99XA48x94grtxkZiBKKUmGU7HU4p 5bdTj3Ki8HYCaaHz73VeLsPGvXc6uzMtHCHubErIvbf1VsXOuGo4xhxveT/RutKrJto81YWp zlrvbU8DJOvRuzBbNk/N/SgpyceVT+g3hAnoySUV1nweeNdnOZZ8LsH5bjCyJ8oq0n1NfngY u1BXSqCNKPh/QrVsXpvlWuvWog1k/GbtxQoIJ2lizJPrxA8kjUI/oQ/S9DDejiLD7yzXeUUw zjgEZ/1bwhIKKwYBBAGXVQEFAQEHQELDQDfZ2b77GoJFe9RHDa2xOd3X4QZPuRcqvwu2h74j AwEIB8LAfAQYAQoAJhYhBOiTcm3I5MDeO6IBBzZPujT/FwpLBQJn/VvCAhsMBQkI3sMOAAoJ EDZPujT/FwpLC9UH/Am+C8AQsDFNpTUWzkqEwTMAcXBES9sRr9Hx3AbysOuEF28LwAGaHlx9 pn17tiusZcDQ3TnJnbp4pdUt6n1HYZqR04Nrkz7fbirFJQ214vHFov0lc8g26OdEVHWqHtKN GGAryZaaT2c8aqRX3X8BraFyjj35cFLKeUJDnKBWDt4ztvQnnHPi9GH74h1O/mglcMyM3EnM AOWKeYsHlJf98mt8gRamko7WOG473faeN1IO/iTZIdUEjzsTmzITehrqMm6FVFPFOUtmQG4M 9X95XOk5hOL7VvJZpLc3lZdccyaWP2yJ14AX3QMBJjZuPpfDCJCVPb7PBa8fOWMghEO8hTo= In-Reply-To: <175346701201.3223523.6273511358134710495.git-patchwork-notify@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 7/26/25 1:10 AM, patchwork-bot+netdevbpf@kernel.org wrote: > Here is the summary with links: > - [net,v2] net: usbnet: Avoid potential RCU stall on LINK_CHANGE event > https://git.kernel.org/netdev/net/c/0d9cfc9b8cb1 I just got bitten by this commit after syncing with Linus' tree. It breaks my laptop. RJ45 LAN cable cannot connect. After git bisect, it ends up with that commit. ammarfaizi2@integral2:~/p/linux-block$ git bisect log git bisect start # bad: [ff82265b006e468df734a2d71f9110b73bd740f2] Merge branch 'master' into af/home (sync with mainline) git bisect bad ff82265b006e468df734a2d71f9110b73bd740f2 # good: [b0896d43221f7858491d59383f56dfe38e7fff34] Merge tag 'kvm-x86-vmx-6.17' of https://github.com/kvm-x86/linux into af/home git bisect good b0896d43221f7858491d59383f56dfe38e7fff34 # good: [5f5c9952b33cb4e8d25c70ef29f7a45cd26b6a9b] Merge tag 'powerpc-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux git bisect good 5f5c9952b33cb4e8d25c70ef29f7a45cd26b6a9b # bad: [8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf] Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next git bisect bad 8be4d31cb8aaeea27bde4b7ddb26e28a89062ebf # good: [c2b93d6beca8526fb38ccc834def1c987afe24fc] eth: fbnic: Create ring buffer for firmware logs git bisect good c2b93d6beca8526fb38ccc834def1c987afe24fc # good: [077f7153fd2582874b0dec8c8fcd687677d0f4cc] gve: merge xdp and xsk registration git bisect good 077f7153fd2582874b0dec8c8fcd687677d0f4cc # good: [126d85fb040559ba6654f51c0b587d280b041abb] Merge tag 'wireless-next-2025-07-24' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next git bisect good 126d85fb040559ba6654f51c0b587d280b041abb # good: [ecc383e5fe060f1aaad0e4e4ae36ad1c899e948d] Merge tag 'linux-can-next-for-6.17-20250725' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next git bisect good ecc383e5fe060f1aaad0e4e4ae36ad1c899e948d # bad: [c58c18be8850d58fd61b0480d2355df89ce7ee59] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net git bisect bad c58c18be8850d58fd61b0480d2355df89ce7ee59 # good: [620e2392db235ba3b9e9619912aadb8cadee15e7] net: dsa: microchip: Disable PTP function of KSZ8463 git bisect good 620e2392db235ba3b9e9619912aadb8cadee15e7 # bad: [2764ab51d5f0e8c7d3b7043af426b1883e3bde1d] stmmac: xsk: fix negative overflow of budget in zerocopy mode git bisect bad 2764ab51d5f0e8c7d3b7043af426b1883e3bde1d # good: [4fc7885c3a98ec4450103aef874fb1d35920c7af] Merge branch 'mlx5e-misc-fixes-2025-07-23' git bisect good 4fc7885c3a98ec4450103aef874fb1d35920c7af # bad: [1bbb76a899486827394530916f01214d049931b3] neighbour: Fix null-ptr-deref in neigh_flush_dev(). git bisect bad 1bbb76a899486827394530916f01214d049931b3 # bad: [165a7f5db919ab68a45ae755cceb751e067273ef] net: dsa: microchip: Fix wrong rx drop MIB counter for KSZ8863 git bisect bad 165a7f5db919ab68a45ae755cceb751e067273ef # bad: [0d9cfc9b8cb17dbc29a98792d36ec39a1cf1395f] net: usbnet: Avoid potential RCU stall on LINK_CHANGE event git bisect bad 0d9cfc9b8cb17dbc29a98792d36ec39a1cf1395f # first bad commit: [0d9cfc9b8cb17dbc29a98792d36ec39a1cf1395f] net: usbnet: Avoid potential RCU stall on LINK_CHANGE event -- Ammar Faizi