From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B20D04399D6 for ; Mon, 17 Aug 2026 13:42:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786974128; cv=none; b=Vj3tSm090fuA8e7l3ZdaBo/BEqEoHS1KV0nvWjeJtl2J2/s+beGpUAdOItum8F4dtaD4yHVKsrsejc3hS/4t9J3vyRBqIxhQZWWhx8Eb7/hJ2tXv7YPOkj18ChR76Ud4MMrcx0nImYyF+nLCXtg3wQzjacAZnSjoQtMJ60bn/hk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786974128; c=relaxed/simple; bh=aX6C4I6qSjoQMxeJ+OPzLeCTstwwhUCCr4q0NmAXO+4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=aZQXn9s4pGVHbvLMV54cLd9nHQXf/qegLF8ttINi+WWjfIdDK4OVW/S7AwnJX4kiFxiJXhNm03ynA2HCZVIsBP+MxhQUgWHr1QHnufOtJyvbTShoEKwYbQOMcFCXChVT22M42aoxN+SD4JYHdBUJH5cgNFl2HfdF4VcA+ItF2tg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f71.google.com with SMTP id 006d021491bc7-6b0b1b141b3so1333897eaf.0 for ; Mon, 17 Aug 2026 06:42:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786974123; x=1787578923; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=6OqqhA80wtcU3IsPjUZveXdR6cUhDI1A/Qh9dqHqO8Q=; b=lhN1l9kCtjwDXDW9hejssOFoPuRFx1jZ63mOO94Qe1Z/Ocvono5DzMO3/Ln/PozUQU FzzjZ7zsUKk+tyu1YecsVYFPK+eujRQ1p6qArKl7KjcVx2bMZEVM7ywAoqp5OGMYlHE9 s2CRffwGAJ1DHvpi/AnWIXRmXjasZPsXSQnL7kswzAF9coGXCAAv98vwHa7X4A9I5UrF eXYRQtJv7xurQoC1BEAls+OsFvs5Cv0nNqZikz6llEk4scqpmJ09OiXsZidoJHtYixkA /f8XBTP4EBIf8TrSAXFvKK30GNUEpkGT0AAci8Andw6qfhrCZTicZpdnI3OAvWkIFExg ioWA== X-Forwarded-Encrypted: i=1; AHgh+RolCx21u9KzoOVFMYaw5NF8J4TXfBX+27ut26aZpEBe/8363/6BRJHoZvvcuInuEDzvPd7CjTzzHtKAzAU=@vger.kernel.org X-Gm-Message-State: AOJu0YyqtMd6aI5kw2ZkThUQSpJATBS+cbnyOhanUBJLG8lm7DKJf68y V/PMi5O7Kxq3RvQiinchDJLWi2I7IlnlzUupwT3Cq++ZrGusgE1p/rwkjr70qyidN6EeicNgNx+ RQQFVwoy+yxZ5xiztp/g+IR+fMeX4phAlU86t6RG0Qylw4cgl1vL2sRMXpI8= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:f07:b0:6ae:55f6:2cdb with SMTP id 006d021491bc7-6b0d5fca98bmr22016036eaf.1.1786974123322; Mon, 17 Aug 2026 06:42:03 -0700 (PDT) Date: Mon, 17 Aug 2026 06:42:03 -0700 In-Reply-To: <6a6bfa43.1b55b669.19788.0016.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a830fab.dbb3a75c.20434b.005d.GAE@google.com> Subject: Re: [syzbot] [usb?] KASAN: slab-use-after-free Read in ep_open From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, brauner@kernel.org, gregkh@linuxfoundation.org, io-uring@vger.kernel.org, jack@suse.cz, kartikey406@gmail.com, kees@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, mjguzik@gmail.com, nogikh@google.com, stern@rowland.harvard.edu, syzbot@kernel.org, syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com, syzkaller-upstream-moderation@googlegroups.com, torvalds@ppc970.osdl.org, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit aa00f67adc2c0d6439f81b5a81ff181377c47a7e Author: Jens Axboe Date: Tue Oct 22 19:47:00 2024 +0000 io_uring: add support for fixed wait regions bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10e60679580000 start commit: 9a143525f62b Merge tag 'ata-7.2-rc7' of git://git.kernel.o.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=12e60679580000 console output: https://syzkaller.appspot.com/x/log.txt?x=14e60679580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c44651ea7dd2f307 dashboard link: https://syzkaller.appspot.com/bug?extid=df9e891bf8ea586f846b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=120defb9580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16323fb9580000 Reported-by: syzbot+df9e891bf8ea586f846b@syzkaller.appspotmail.com Fixes: aa00f67adc2c ("io_uring: add support for fixed wait regions") For information about bisection process see: https://goo.gl/tpsmEJ#bisection