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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 May 2025 08:16:03.3354 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cfdff785-ab8d-4759-0292-08dd96ad65b2 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: AMS1EPF0000004C.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PR3PR08MB5817 Hi Carlos, > On Tue, May 13, 2025 at 06:47:19PM +0100, Yeoreum Yun wrote: > > binderfs' devices list is global list and can be accesed by multi-thread > > while unmount binder device. > > Since there is no proper locking, it can meet datarace problem. > > for example it's one of case reported UAF while binderfs_evict_inode() > > removes binder device: > > > > sudo ./stress-ng --binderfs 8 --binderfs-ops 10000 -t 15 \ > > --pathological --timestamp --tz --syslog --perf --no-rand-seed \ > > --times --metrics --klog-check --status 5 -x smi -v --interrupts --change-cpu > > I just found this by chance (there is a typo on my email). Note this was > already fixed here: > https://lore.kernel.org/all/20250324132427.922495-1-dmantipov@yandex.ru/ Thanks. I didn't know that :) -- Sincerely, Yeoreum Yun