Messages in this thread Patch in this message | | | From | Hillf Danton <> | Subject | Re: [syzbot] [pm?] KASAN: use-after-free Read in netdev_unregister_kobject | Date | Tue, 23 Apr 2024 18:42:32 +0800 |
| |
On Mon, 22 Apr 2024 08:35:25 -0700 > syzbot found the following issue on: > > HEAD commit: 3cdb45594619 Merge tag 's390-6.9-4' of git://git.kernel.or.. > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144067cb180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3cdb45594619
--- x/net/bluetooth/bnep/core.c +++ y/net/bluetooth/bnep/core.c @@ -535,6 +535,7 @@ static int bnep_session(void *arg) __bnep_unlink_session(s); up_write(&bnep_session_sem); + put_device(dev->dev.parent); free_netdev(dev); module_put_and_kthread_exit(0); return 0; @@ -618,7 +619,7 @@ int bnep_add_connection(struct bnep_conn bnep_set_default_proto_filter(s); #endif - SET_NETDEV_DEV(dev, bnep_get_device(s)); + SET_NETDEV_DEV(dev, get_device(bnep_get_device(s))); SET_NETDEV_DEVTYPE(dev, &bnep_type); err = register_netdev(dev); --
| |