On Thursday 04 January 2007 15:14, Ed Schouten wrote: > Hello everyone, > > I decided to investigate this bug because I think the bug is quite > irritating. After adding some ddb show commands to the source and > reading a lot of code, I think I understand the problem: > > The tty code doesn't leak any ucreds, it's the devfs code that > crhold()'s an ucred structure. When a new pty is needed, the tty_pty > code allocates a new pty. It also runs make_dev_cred(), to which it > passes the thread's ucred. This function calls make_dev_credv(), which > finally runs crhold(). > > As long as pty's have been allocated that have been created by threads > in a jail, the prison structure has more references, causing the zombie > jails to exist.
Why aren't the pty's destroyed? Once all references to the pty are closed it should be destroyed and the resulting devfs_free() should drop the reference. Is the pty somehow stuck on the dead_cdevsw? -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
