From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87966C2D0A3 for ; Thu, 12 Nov 2020 15:07:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C95222240 for ; Thu, 12 Nov 2020 15:07:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727899AbgKLPHb (ORCPT ); Thu, 12 Nov 2020 10:07:31 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:47994 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728220AbgKLPHU (ORCPT ); Thu, 12 Nov 2020 10:07:20 -0500 Received: by mail-il1-f197.google.com with SMTP id u16so4158831ilq.14 for ; Thu, 12 Nov 2020 07:07:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=yHecYpfF6cT432rI6k7GGa93GqlnRPwyZZLgxG/YBFI=; b=VZ4AiYnIxGHldSIRAxCv/Hvc6FZL1oOUT2VSreevdrmlJERUGvmstWtOrLpAqHVteY PuiXQYplenG1JLxBhz2hX+xJ0QM3yAJ2ZZjT9asmIYk2aLsBWsM3SUie6RIjgmaKzvSk iP8zLUEbacTl8Uja2DpcKr36j9c1xYD4Z+o79tL++hIyQm8II6L1clgbRkZYKj28tws5 XhsNB3Tg+2P4gTO8SD46yv4yXhm1nPzZybW+Ks9wljzX5DN/iiJ3FtXihlPsptrnEqwQ A/8GidYQk/kFJnP0PSEIK6mAsnQ7puJDMGSY0soCTGqZq7yMM1+ZPgzY4PDiqFEEF9oO I8TA== X-Gm-Message-State: AOAM530MUfu2gMtSZl0rh+9fhe6xPBPiCSfr1d/Z3iPedOstFi5iVMD7 yLuVOQX34sNiYzma2ugollvnToYRDnAU90L4UZBMsNwPnj1N X-Google-Smtp-Source: ABdhPJwczwO+PYjo7Lr1qDXqIncKJ/Pi6xRgKhkFMGHr4BkZV2736ijDDt2yrq1UO8wGx3nwntSHxzVfYju1rQ+WioIvtO58qWEc MIME-Version: 1.0 X-Received: by 2002:a02:ac09:: with SMTP id a9mr75060jao.60.1605193638204; Thu, 12 Nov 2020 07:07:18 -0800 (PST) Date: Thu, 12 Nov 2020 07:07:18 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000099d90905b3ea44b4@google.com> Subject: memory leak in wacom_probe From: syzbot To: benjamin.tissoires@redhat.com, jikos@kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: eccc8767 Merge branch 'fixes' of git://git.kernel.org/pub/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=145055aa500000 kernel config: https://syzkaller.appspot.com/x/.config?x=a3f13716fa0212fd dashboard link: https://syzkaller.appspot.com/bug?extid=5b49c9695968d7250a26 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16339ad6500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1409f511500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5b49c9695968d7250a26@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88810dc44a00 (size 512): comm "kworker/1:2", pid 3674, jiffies 4294943617 (age 14.100s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000023e1afac>] kmalloc_array include/linux/slab.h:592 [inline] [<0000000023e1afac>] __kfifo_alloc+0xad/0x100 lib/kfifo.c:43 [<00000000c477f737>] wacom_probe+0x1a1/0x3b0 drivers/hid/wacom_sys.c:2727 [<00000000b3109aca>] hid_device_probe+0x16b/0x210 drivers/hid/hid-core.c:2281 [<00000000aff7c640>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000778d0bc3>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<000000005108dbb5>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000efb7c59e>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<0000000024ab1590>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<000000004c7ac048>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000b93050a3>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<00000000e5b46ea5>] hid_add_device+0x151/0x390 drivers/hid/hid-core.c:2437 [<00000000c6add147>] usbhid_probe+0x412/0x560 drivers/hid/usbhid/hid-core.c:1407 [<00000000c33acdb4>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<00000000aff7c640>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000778d0bc3>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<000000005108dbb5>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches