From nobody Mon Apr 6 22:15:24 2026 Received: from mail-oo1-f72.google.com (mail-oo1-f72.google.com [209.85.161.72]) (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 8A7EC3E9F93 for ; Tue, 17 Mar 2026 15:12:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.72 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773760343; cv=none; b=GaNyGZVBkxiYtO8fcQtr1UIk/rhV9SBRbrnM2k5x7DsLMTqOMKbM+E+c4MpcLdfZ+aWV4kk6fGH0GA/Br1dj2/gwPM/I+81VmoqCWrV7ZF2MZxCTdcrJthbfOehcEk0qtv5RFBXc8ZJuEVkzy3RbE7r3g43kikk7RC3YbwaDwzc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773760343; c=relaxed/simple; bh=nUufHvkSyixtBROPl5roUwOHuyZRthKly0sW7GWGPgM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=WcwxSWx/zPD63R+bLFY4I8mIuEq8YHWtyFQMLEjXkhB9RkDJb8wlPlvaxkSnvt8awFXKTQB4rPvSPyM6EuLna/EJ0KNIG/ADFFIfMyqbYwJpvAlU+jSDGaSbflGtUWHpfS8ovvyHpG3KFO9glz/ctjDDgn/xgSJHscaeB4O9BVg= 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=209.85.161.72 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-f72.google.com with SMTP id 006d021491bc7-67a1e063795so10247840eaf.1 for ; Tue, 17 Mar 2026 08:12:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773760341; x=1774365141; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=K3RSAEGFfdGsXzZphIa0L+Y9js/+9CI09UHIjc30UOg=; b=TY4tEchIfnMbK7nax7Zad3v3XsdM/RYQ4m6OE7rJbo0zVmg7f0XU6mnA1gS4MH4e4i p27QGWJvRRHD5TMpgFB272dHoNkrDnJSGpBSRxzLasiPPpcwCCmnFmawbV40Qjg4dC01 oVqxmjdoAm4oG1pobaOAFVo7AmQgrNP5csibX50l9QXt/Z3SNbY4sGOTIxBQfUS8zL/A iNiEEA4J57DvbQW+s08b3bYnC3yz1qB0yAIrsiW/0m5u/Cy06wzH5xtxjSLXoNamYToB L/7bQZvunutbvBVu+KbU774jQxj35/AwSIS+qQEO01ULJjoWY6FnH3nZ21Q2aNtJ5hm6 euaA== X-Gm-Message-State: AOJu0YwKayqZ1UZNn1JNBJ8ZUzJW3FJTIucaYrJOQXGJEhPc1RiWO+xF HM727Q+L0CHAGTjEEeg6EHZi2Sl7r9Lj3Si/kl1aG2QP0So1Zuij4xjOzX4F5EFBv8EIzhZSdXh Mj5VjJ3zMf+guXVEzBN8+wJskP5/IXoXbFguf1MijajApslb6MaXfqXS+h/o= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4487:b0:67b:b7ce:12a6 with SMTP id 006d021491bc7-67c0484ddebmr2076077eaf.0.1773760341530; Tue, 17 Mar 2026 08:12:21 -0700 (PDT) Date: Tue, 17 Mar 2026 08:12:21 -0700 In-Reply-To: <000000000000cd69c7061dfe35d2@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69b96f55.050a0220.248e02.012e.GAE@google.com> Subject: Forwarded: Re: Re: [syzbot] [bluetooth?] WARNING: ODEBUG bug in hci_release_dev (2) From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: Re: [syzbot] [bluetooth?] WARNING: ODEBUG bug in hci_release_d= ev (2) Author: abysamross@gmail.com #syz test =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D From 006a3d0d3cc1b5e7be6d4eec2cbafacdbd40816c Mon Sep 17 00:00:00 2001 From: Aby Sam Ross Date: Tue, 17 Mar 2026 00:21:32 +0530 Subject: [PATCH v1 1/1] Bluetooth: hci_release_dev: cancel coredump work The hci device's coredump timeout work remains active when the memory associated with the hci device is freed up in hci_release_dev(), causing an active object to be freed. Cancel all hci coredump related work while in hci_release_dev(). Signed-off-by: Aby Sam Ross --- include/net/bluetooth/coredump.h | 3 +++ net/bluetooth/coredump.c | 7 +++++++ net/bluetooth/hci_core.c | 1 + 3 files changed, 11 insertions(+) diff --git a/include/net/bluetooth/coredump.h b/include/net/bluetooth/cored= ump.h index 72f51b587a04..18318a1f8e1a 100644 --- a/include/net/bluetooth/coredump.h +++ b/include/net/bluetooth/coredump.h @@ -71,6 +71,7 @@ int hci_devcd_append(struct hci_dev *hdev, struct sk_buff= *skb); int hci_devcd_append_pattern(struct hci_dev *hdev, u8 pattern, u32 len); int hci_devcd_complete(struct hci_dev *hdev); int hci_devcd_abort(struct hci_dev *hdev); +void hci_devcd_cancel_work_sync(struct hci_dev *hdev); =20 #else =20 @@ -111,6 +112,8 @@ static inline int hci_devcd_abort(struct hci_dev *hdev) return -EOPNOTSUPP; } =20 +static inline void hci_devcd_cancel_work_sync(struct hci_dev *hdev) {} + #endif /* CONFIG_DEV_COREDUMP */ =20 #endif /* __COREDUMP_H */ diff --git a/net/bluetooth/coredump.c b/net/bluetooth/coredump.c index 720cb79adf96..e3b65d627019 100644 --- a/net/bluetooth/coredump.c +++ b/net/bluetooth/coredump.c @@ -84,6 +84,13 @@ static void hci_devcd_notify(struct hci_dev *hdev, int s= tate) hdev->dump.notify_change(hdev, state); } =20 + +void hci_devcd_cancel_work_sync(struct hci_dev *hdev) +{ + cancel_work_sync(&hdev->dump.dump_rx); + cancel_delayed_work_sync(&hdev->dump.dump_timeout); +} + /* Call with hci_dev_lock only. */ void hci_devcd_reset(struct hci_dev *hdev) { diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 31308c1de4ec..95416cd0d580 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -2749,6 +2749,7 @@ void hci_release_dev(struct hci_dev *hdev) =20 destroy_workqueue(hdev->workqueue); destroy_workqueue(hdev->req_workqueue); + hci_devcd_cancel_work_sync(hdev); =20 hci_dev_lock(hdev); hci_bdaddr_list_clear(&hdev->reject_list); --=20 2.53.0