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X-MS-Exchange-CrossTenant-Network-Message-Id: 4c7a01f8-eedb-45e7-63c2-08dd5670b4b9 X-MS-Exchange-CrossTenant-AuthSource: DS7PR10MB5134.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Feb 2025 14:20:23.1919 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: kaktRyYeCjcLstWDQrzG4OgvJwQiBvImcVK6OMazL+bvmDOKLR1I7wCEbCAjChkV8QXWjNo8QFrEazNWY73JAA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB6459 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-26_03,2025-02-26_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 mlxlogscore=999 bulkscore=0 spamscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2502100000 definitions=main-2502260114 X-Proofpoint-GUID: P7LbxArpNl_B3zbrGHZsCcVa4Hr4dW21 X-Proofpoint-ORIG-GUID: P7LbxArpNl_B3zbrGHZsCcVa4Hr4dW21 On 2/26/25 9:16 AM, Takashi Iwai wrote: > On Wed, 26 Feb 2025 15:11:04 +0100, > Chuck Lever wrote: >> >> On 2/26/25 3:38 AM, Takashi Iwai wrote: >>> On Sun, 23 Feb 2025 16:18:41 +0100, >>> Chuck Lever wrote: >>>> >>>> On 2/23/25 3:53 AM, Takashi Iwai wrote: >>>>> [ resent due to a wrong address for regression reporting, sorry! ] >>>>> >>>>> Hi, >>>>> >>>>> we received a bug report showing the regression on 6.13.1 kernel >>>>> against 6.13.0. 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. > > No, I don't have, I'm merely a messenger. Whoever was the original reporter has the ability to reproduce this and answer any questions the Chrome team might have. Please have them drive this. I'm already two steps removed, so it doesn't make sense for me to report a problem for which I have no standing. -- Chuck Lever