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{ "id": 2215659, "url": "http://patchwork.ozlabs.org/api/covers/2215659/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/cover/20260325013743.429342-1-tim.whisonant@canonical.com/", "project": { "id": 15, "url": "http://patchwork.ozlabs.org/api/projects/15/?format=api", "name": "Ubuntu Kernel", "link_name": "ubuntu-kernel", "list_id": "kernel-team.lists.ubuntu.com", "list_email": "kernel-team@lists.ubuntu.com", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260325013743.429342-1-tim.whisonant@canonical.com>", "list_archive_url": null, "date": "2026-03-25T01:37:33", "name": "[SRU,J,0/1] CVE-2024-50060", "submitter": { "id": 89903, "url": "http://patchwork.ozlabs.org/api/people/89903/?format=api", "name": "Tim Whisonant", "email": "tim.whisonant@canonical.com" }, "mbox": "http://patchwork.ozlabs.org/project/ubuntu-kernel/cover/20260325013743.429342-1-tim.whisonant@canonical.com/mbox/", "series": [ { "id": 497372, "url": "http://patchwork.ozlabs.org/api/series/497372/?format=api", "web_url": "http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=497372", "date": "2026-03-25T01:37:33", "name": "CVE-2024-50060", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497372/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2215659/comments/", "headers": { "Return-Path": "<kernel-team-bounces@lists.ubuntu.com>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (4096-bit key;\n unprotected) header.d=canonical.com header.i=@canonical.com\n header.a=rsa-sha256 header.s=20251003 header.b=S5/JQ3ng;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "kernel-team-bounces@lists.ubuntu.com", "Sender": "\"kernel-team\" <kernel-team-bounces@lists.ubuntu.com>" }, "content": "SRU Justification:\n\n[Impact]\n\nio_uring: check if we need to reschedule during overflow flush\n\nIn terms of normal application usage, this list will always be empty.\nAnd if an application does overflow a bit, it'll have a few entries.\nHowever, nothing obviously prevents syzbot from running a test case\nthat generates a ton of overflow entries, and then flushing them can\ntake quite a while.\n\nCheck for needing to reschedule while flushing, and drop our locks and\ndo so if necessary. There's no state to maintain here as overflows\nalways prune from head-of-list, hence it's fine to drop and reacquire\nthe locks at the end of the loop.\n\n[Fix]\n\nQuesting: not affected\nNoble: fixed separately\nJammy: backported from upstream\nFocal: not affected\nBionic: not affected\nXenial: not affected\nTrusty: not affected\n\n[Test Plan]\n\nCompile and boot tested.\n\n[Where problems could occur]\n\nThe change affects io_uring in the overflow list processing\ncode. Issues might affect slow consumer processes that cause\nthe overflow path to be taken.\n\nJens Axboe (1):\n io_uring: check if we need to reschedule during overflow flush\n\n io_uring/io_uring.c | 17 +++++++++++++++++\n 1 file changed, 17 insertions(+)" }