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tty: release_one_tty() forgets to put pids

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commit 6da8d866d0 upstream.

release_one_tty(tty) can be called when tty still has a reference
to pgrp/session. In this case we leak the pid.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Oleg Nesterov 2010-04-02 18:05:12 +02:00 committed by Greg Kroah-Hartman
parent fae08fb3f9
commit e2278e63b1
1 changed files with 2 additions and 0 deletions
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2
drivers/char/tty_io.c
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@ -1408,6 +1408,8 @@ static void release_one_tty(struct work_struct *work)
list_del_init(&tty->tty_files);
file_list_unlock();
put_pid(tty->pgrp);
put_pid(tty->session);
free_tty_struct(tty);
}