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AJvYcCWRiJZk5zro6NfIBEXh6uUMd1DvW8ruybtIPJbmBsnQ0BeOPFwzU51+OVyi3aC8SKiIywX0GqDDwjLpBFA=@vger.kernel.org X-Gm-Message-State: AOJu0YzB3Q3fF3wbuZ1tbe+W/utAGLqDUEchOvItmQznTmoXVCWsCp8B nJV0+Gpn9AFtQXV7M6j5PF6SC3zT5pN04tScPqLTBMOSFJn85COpELWbDfsuYUotwPQgyJqY0ng E846SNJOrqnc/DVfoCzBPDEqHOiUGi0FmN5++K8ybJKQSwlpTXfVDm5I2WmM= X-Google-Smtp-Source: AGHT+IGrQScWWo45LylkuRv5HGDyobczXYWErcXPx1E+v8CRWPcU17DFoElCjn+IhRNe9LH1A9rrr9GFRDwbOs6KC5iTCNajOJ3p Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a0f:b0:431:d864:366a with SMTP id e9e14a558f8ab-435a9011733mr8980315ab.2.1763580722699; Wed, 19 Nov 2025 11:32:02 -0800 (PST) Date: Wed, 19 Nov 2025 11:32:02 -0800 In-Reply-To: <6d2a1c9f-d4db-496d-9230-e41e5166eb86@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691e1b32.a70a0220.2ea503.001f.GAE@google.com> Subject: Re: [syzbot] [bluetooth?] [usb?] memory leak in __hci_cmd_sync_sk From: syzbot To: linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, ssranevjti@gmail.com, 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 2025/11/19 19:30:48 executed programs: 47 2025/11/19 19:30:56 executed programs: 49 2025/11/19 19:31:03 executed programs: 51 2025/11/19 19:31:11 executed programs: 53 BUG: memory leak unreferenced object 0xffff888111aec700 (size 240): comm "kworker/u9:1", pid 5135, jiffies 4294955520 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 d1edf5a3): 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+0x84/0x290 net/bluetooth/hci_sync.c:168 __hci_cmd_sync_ev+0x3e/0x50 net/bluetooth/hci_sync.c:255 send_hci_cmd_sync+0x5e/0xf0 net/bluetooth/mgmt.c:2615 hci_cmd_sync_work+0xd5/0x160 net/bluetooth/hci_sync.c:337 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 0xffff88810a34a680 (size 704): comm "kworker/u9:1", pid 5135, jiffies 4294955520 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+0x84/0x290 net/bluetooth/hci_sync.c:168 __hci_cmd_sync_ev+0x3e/0x50 net/bluetooth/hci_sync.c:255 send_hci_cmd_sync+0x5e/0xf0 net/bluetooth/mgmt.c:2615 hci_cmd_sync_work+0xd5/0x160 net/bluetooth/hci_sync.c:337 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=13e81a12580000 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=10d6f332580000