From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 B805C2F0C69 for ; Thu, 20 Nov 2025 15:27:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763652425; cv=none; b=kjOA/qmUMnrD3q7cnrBOk4QAgNn+ZrNJ6eaeG9aO/X8g1KVtYKVzmr+ZqNMjzTIIVScz6d5HphYTP/G2ooXFYDfBtF+rC3x0U71157S6BGNJ2Sjp0c86n0O1PdGOc5HOcxOkGBe8TAtPt7sOLeo32B8WIL+feBRMFCgtnlR9LKk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763652425; c=relaxed/simple; bh=lnIG1JNph46tk/xnVrqDdyg0FZgWNAJ34rJhIXTd5LQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=da+wCXTMp7Wh+JgRMgSvGkc9gMskIfu1uDoHAZRT73Uan0J4gJR1RFyglCEjg0aef5AIog4Ztk50QhBFp37odDkBmZmLLXiXF5p9GlQAYBkU/xVX4hxpI4AwpnZa7bSNr6mk4ScA12eUtnKV0igcS7owHfHl+jHC2gm3KMVHdNM= 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=209.85.166.197 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-il1-f197.google.com with SMTP id e9e14a558f8ab-43470d72247so11258155ab.3 for ; Thu, 20 Nov 2025 07:27:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763652423; x=1764257223; 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=egNbD0216HVL+dJ8UCBouFS2gMfoJyWmQ9FZ263cBPY=; b=ZtYdjcBAAJWaDXsXeUlvpzwr2pYxM+pNdVl4ppKxT8OyTaiD29IWWO4zYXLVuhGWRU Fob9A/Ud5Y9eUIpcohiVYoaJMNnBRvNtHvzq+apsoj/kvwyW91NpyiP4leepEnCw+K/V gpWPHIBU25jC78NnSbNm2eTslc/2J0OAOr7WRedsoMDmIZb3qLQopnxzpCAc126HcXsM DviX1olXgcUIqKsp+/2zRiAndftryJ1EBxOYi+zncB/xzgvyBqDEx3hYE9a0E8rpX/OS oD1j5pzviuG9lM+x/LIfjxhEI+4q+bAu7CLi8BjG5Dae3xwlUP9w1POnpRG9RWDbvizP B+Tg== X-Forwarded-Encrypted: i=1; AJvYcCV1S45RqByigT55r07IJBYZlKJiLRT/BtU1z0RTTli8/imjlvltAY87altuNQvbLfNg9T1umY24Qk+zG8A=@vger.kernel.org X-Gm-Message-State: AOJu0YzdiuGZUG+eOA4yz2xQ6oCW3g3BVH1pdLUXmuq2xM/GYSNphS/2 OiGDo1XZPWNfzgmmZ7Y+4KDjugW5DMIPZU3+ZL/P1/sY3VWHvF61lwI7HuMdEjQmGoImdeFNOD+ 97iUiOE8pSVBPI7D5tef9vJOiXNVDiTiOQ0vW16fUakldKU09lMnbuXBhALk= X-Google-Smtp-Source: AGHT+IHLZBd5iWjfftnLsad/zxXzk4RXfBUSehg2aG4DOudGtUaDGMYYe4JNAGqxrHmjiQhAa3fUtb+CCsbap0n8VNDT8zrOPd8h Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1543:b0:433:308c:19a6 with SMTP id e9e14a558f8ab-435b1fdfb5cmr13074345ab.12.1763652422749; Thu, 20 Nov 2025 07:27:02 -0800 (PST) Date: Thu, 20 Nov 2025 07:27:02 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691f3346.a70a0220.d98e3.0030.GAE@google.com> Subject: Re: [syzbot] [bluetooth?] [usb?] memory leak in __hci_cmd_sync_sk From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: memory leak in __hci_cmd_sync_sk BUG: memory leak unreferenced object 0xffff88810c843f00 (size 240): comm "kworker/u9:1", pid 5136, jiffies 4294947634 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 (crc 9f24a45a): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4983 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5340 __alloc_skb+0x203/0x240 net/core/skbuff.c:660 alloc_skb include/linux/skbuff.h:1383 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:510 [inline] hci_cmd_sync_alloc+0x30/0x140 net/bluetooth/hci_sync.c:58 hci_cmd_sync_add net/bluetooth/hci_sync.c:99 [inline] __hci_cmd_sync_sk+0x7d/0x2a0 net/bluetooth/hci_sync.c:170 __hci_cmd_sync_ev+0x3e/0x50 net/bluetooth/hci_sync.c:264 send_hci_cmd_sync+0x5e/0xf0 net/bluetooth/mgmt.c:2615 hci_cmd_sync_work+0xd5/0x160 net/bluetooth/hci_sync.c:346 process_one_work+0x26b/0x620 kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x2c4/0x4f0 kernel/workqueue.c:3427 kthread+0x15b/0x310 kernel/kthread.c:463 ret_from_fork+0x210/0x240 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 BUG: memory leak unreferenced object 0xffff888109e3d8c0 (size 704): comm "kworker/u9:1", pid 5136, jiffies 4294947634 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 4e765d9f): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4983 [inline] slab_alloc_node mm/slub.c:5288 [inline] kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5340 kmalloc_reserve+0xe6/0x180 net/core/skbuff.c:579 __alloc_skb+0xd4/0x240 net/core/skbuff.c:670 alloc_skb include/linux/skbuff.h:1383 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:510 [inline] hci_cmd_sync_alloc+0x30/0x140 net/bluetooth/hci_sync.c:58 hci_cmd_sync_add net/bluetooth/hci_sync.c:99 [inline] __hci_cmd_sync_sk+0x7d/0x2a0 net/bluetooth/hci_sync.c:170 __hci_cmd_sync_ev+0x3e/0x50 net/bluetooth/hci_sync.c:264 send_hci_cmd_sync+0x5e/0xf0 net/bluetooth/mgmt.c:2615 hci_cmd_sync_work+0xd5/0x160 net/bluetooth/hci_sync.c:346 process_one_work+0x26b/0x620 kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x2c4/0x4f0 kernel/workqueue.c:3427 kthread+0x15b/0x310 kernel/kthread.c:463 ret_from_fork+0x210/0x240 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF Tested on: commit: 23cb64fb Merge tag 'soc-fixes-6.18-3' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=177f1a12580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f30cc590c4f6da44 dashboard link: https://syzkaller.appspot.com/bug?extid=f098d64cc684b8dbaf65 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=14148c2a580000