lkml.org 
[lkml]   [2018]   [Jul]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC][PATCH 09/11] tty_io: Use do_send_sig_info in __do_SACK to forcibly kill tasks
    On 07/10, Eric W. Biederman wrote:
    >
    > Therefore use do_send_sig_info in all cases in __do_SAK to kill
    > tasks as allows for exactly what the code wants to do.

    OK, but probably the changelog should also mention that now even the global
    init will be killed if it has this tty opened.


    > Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
    > ---
    > drivers/tty/tty_io.c | 6 +++---
    > 1 file changed, 3 insertions(+), 3 deletions(-)
    >
    > diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
    > index cec58c53b0c4..42ac168c2a47 100644
    > --- a/drivers/tty/tty_io.c
    > +++ b/drivers/tty/tty_io.c
    > @@ -2747,7 +2747,7 @@ void __do_SAK(struct tty_struct *tty)
    > do_each_pid_task(session, PIDTYPE_SID, p) {
    > tty_notice(tty, "SAK: killed process %d (%s): by session\n",
    > task_pid_nr(p), p->comm);
    > - send_sig(SIGKILL, p, 1);
    > + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true);
    > } while_each_pid_task(session, PIDTYPE_SID, p);
    >
    > /* Now kill any processes that happen to have the tty open */
    > @@ -2755,7 +2755,7 @@ void __do_SAK(struct tty_struct *tty)
    > if (p->signal->tty == tty) {
    > tty_notice(tty, "SAK: killed process %d (%s): by controlling tty\n",
    > task_pid_nr(p), p->comm);
    > - send_sig(SIGKILL, p, 1);
    > + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true);
    > continue;
    > }
    > task_lock(p);
    > @@ -2763,7 +2763,7 @@ void __do_SAK(struct tty_struct *tty)
    > if (i != 0) {
    > tty_notice(tty, "SAK: killed process %d (%s): by fd#%d\n",
    > task_pid_nr(p), p->comm, i - 1);
    > - force_sig(SIGKILL, p);
    > + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true);
    > }
    > task_unlock(p);
    > } while_each_thread(g, p);
    > --
    > 2.17.1
    >

    \
     
     \ /
      Last update: 2018-07-16 16:56    [W:4.145 / U:0.040 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site