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Wed, 26 Feb 2025 14:11:06 +0000 Received: from DS7PR10MB5134.namprd10.prod.outlook.com ([fe80::39b2:9b47:123b:fc63]) by DS7PR10MB5134.namprd10.prod.outlook.com ([fe80::39b2:9b47:123b:fc63%5]) with mapi id 15.20.8489.019; Wed, 26 Feb 2025 14:11:06 +0000 Message-ID: <263acb8f-2864-4165-90f7-6166e68180be@oracle.com> Date: Wed, 26 Feb 2025 09:11:04 -0500 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] Chrome and VSCode breakage with the commit b9b588f22a0c To: Takashi Iwai Cc: regressions@lists.linux.dev, linux-fsdevel@vger.kernel.org, stable@vger.kernel.org, linux-kernel@vger.kernel.org References: <874j0lvy89.wl-tiwai@suse.de> <87jz9d5cdp.wl-tiwai@suse.de> Content-Language: en-US From: Chuck Lever In-Reply-To: <87jz9d5cdp.wl-tiwai@suse.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: CH0P221CA0036.NAMP221.PROD.OUTLOOK.COM (2603:10b6:610:11d::14) To DS7PR10MB5134.namprd10.prod.outlook.com (2603:10b6:5:3a1::23) Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS7PR10MB5134:EE_|SJ1PR10MB5954:EE_ X-MS-Office365-Filtering-Correlation-Id: 9e3beef7-6f69-4bd8-1d86-08dd566f6909 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024|13003099007; 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The symptom is that Chrome and VSCode stopped working >>> with Gnome Scaling, as reported on openSUSE Tumbleweed bug tracker >>> https://bugzilla.suse.com/show_bug.cgi?id=1236943 >>> >>> Quoting from there: >>> """ >>> I use the latest TW on Gnome with a 4K display and 150% >>> scaling. Everything has been working fine, but recently both Chrome >>> and VSCode (installed from official non-openSUSE channels) stopped >>> working with Scaling. >>> .... >>> I am using VSCode with: >>> `--enable-features=UseOzonePlatform --enable-features=WaylandWindowDecorations --ozone-platform-hint=auto` and for Chrome, I select `Preferred Ozone platform` == `Wayland`. >>> """ >>> >>> Surprisingly, the bisection pointed to the backport of the commit >>> b9b588f22a0c049a14885399e27625635ae6ef91 ("libfs: Use d_children list >>> to iterate simple_offset directories"). >>> >>> Indeed, the revert of this patch on the latest 6.13.4 was confirmed to >>> fix the issue. Also, the reporter verified that the latest 6.14-rc >>> release is still affected, too. >>> >>> For now I have no concrete idea how the patch could break the behavior >>> of a graphical application like the above. Let us know if you need >>> something for debugging. (Or at easiest, join to the bugzilla entry >>> and ask there; or open another bug report at whatever you like.) >>> >>> BTW, I'll be traveling tomorrow, so my reply will be delayed. >>> >>> >>> thanks, >>> >>> Takashi >>> >>> #regzbot introduced: b9b588f22a0c049a14885399e27625635ae6ef91 >>> #regzbot monitor: https://bugzilla.suse.com/show_bug.cgi?id=1236943 >> >> We received a similar report a few days ago, and are likewise puzzled at >> the commit result. Please report this issue to the Chrome development >> team and have them come up with a simple reproducer that I can try in my >> own lab. I'm sure they can quickly get to the bottom of the application >> stack to identify the misbehaving interaction between OS and app. > > Do you know where to report to? You'll need to drive this, since you currently have a working reproducer. You can report the issue here: https://support.google.com/chrome/answer/95315?hl=en&co=GENIE.Platform%3DDesktop > The reported stuff are no distro > packages, and I myself have no experience with them, hence have no > idea about the upstream development. > If you have more clue about Chrome development, it'd be appreciated if > you can report / ask from your side. Of course, feel free to put me > to Cc. -- Chuck Lever