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AJvYcCUG2wyw2m2MN38VKxYI5BanbqIaA8zZf1RQFmGgKcckYnuaQHgu92lFHOFb7bVqa7oGW0SzWKv9FhCJuQ==@vger.kernel.org X-Gm-Message-State: AOJu0Yz2qrpV68SS/SRUWRFF+PIJflRk/PJ+Sq4CU0CsGVhC39s5k6rs /PGLiTulXV/Aomzws+XhKWs88irMYOCBKMYpfl5WwK8eiv8ar0pKbo9Z33zIkXtDw5TWOuwawri Q8FK/xAo39+ox/j4M8/XQvAFqXgORd3nks3j8lpUKGWZ996IZCgMnryeji6s= Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:c94:b0:676:aeb2:648 with SMTP id 006d021491bc7-677666f6ecbmr4146251eaf.2.1771188865649; Sun, 15 Feb 2026 12:54:25 -0800 (PST) Date: Sun, 15 Feb 2026 12:54:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69923281.050a0220.340abe.038f.GAE@google.com> Subject: [syzbot] [media?] [usb?] memory leak in dvb_register_device From: syzbot To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: ca4ee40bf13d Partly revert "drm/hyperv: Remove reference t.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15e5c722580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1ee062e17a57772f dashboard link: https://syzkaller.appspot.com/bug?extid=d37184d9d8cc34602616 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1403fe5a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16d58652580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/aa62e1942b0d/disk-ca4ee40b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6bec89136564/vmlinux-ca4ee40b.xz kernel image: https://storage.googleapis.com/syzbot-assets/ab4c41bad9dd/bzImage-ca4ee40b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d37184d9d8cc34602616@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff88812b704d80 (size 192): comm "kworker/0:10", pid 6154, jiffies 4294943581 hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........"....... 01 00 00 00 00 00 00 00 00 ec 21 04 81 88 ff ff ..........!..... backtrace (crc 5efd1503): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4464 [inline] slab_alloc_node mm/slub.c:4788 [inline] __kmalloc_cache_noprof+0x377/0x480 mm/slub.c:5292 kmalloc_noprof include/linux/slab.h:962 [inline] kzalloc_noprof include/linux/slab.h:1204 [inline] dvb_register_device+0x116/0xaa0 drivers/media/dvb-core/dvbdev.c:475 dvb_dmxdev_init+0x116/0x1d0 drivers/media/dvb-core/dmxdev.c:1425 dvb_usbv2_adapter_dvb_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:484 [inline] dvb_usbv2_adapter_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:801 [inline] dvb_usbv2_init drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:866 [inline] dvb_usbv2_probe.cold+0xc63/0xfa9 drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:981 usb_probe_interface+0x246/0x540 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:583 [inline] really_probe+0x12f/0x3a0 drivers/base/dd.c:661 __driver_probe_device+0xc7/0x160 drivers/base/dd.c:803 driver_probe_device+0x2a/0x120 drivers/base/dd.c:833 __device_attach_driver+0x10f/0x170 drivers/base/dd.c:961 bus_for_each_drv+0xd2/0x130 drivers/base/bus.c:500 __device_attach+0xf9/0x290 drivers/base/dd.c:1033 device_initial_probe+0x6f/0x80 drivers/base/dd.c:1088 bus_probe_device+0x3e/0xb0 drivers/base/bus.c:574 device_add+0x97c/0xc80 drivers/base/core.c:3689 usb_set_configuration+0x8f5/0xb80 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0x73/0xb0 drivers/usb/core/generic.c:250 connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup