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signal: send_sig_all no longer needs SEND_SIG_FORCED

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Now that send_signal always delivers SEND_SIG_PRIV signals to a pid
namespace init it is no longer necessary to use SEND_SIG_FORCED when
calling do_send_sig_info to ensure that pid namespace inits are
signaled and possibly killed.  Using SEND_SIG_PRIV is sufficient.

So use SEND_SIG_PRIV so that userspace when it receives a SIGTERM can
tell that the kernel sent the signal and not some random userspace
application.

Fixes: b82c32872d ("sysrq: use SEND_SIG_FORCED instead of force_sig()")
Reviewed-by: Thomas Gleixner <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>
This commit is contained in:
Eric W. Biederman 2018-07-21 11:35:55 -05:00
commit b16503baa8
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/sysrq.c
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@ -348,7 +348,7 @@ static void send_sig_all(int sig)
if (is_global_init(p))
continue;
do_send_sig_info(sig, SEND_SIG_FORCED, p, PIDTYPE_MAX);
do_send_sig_info(sig, SEND_SIG_PRIV, p, PIDTYPE_MAX);
}
read_unlock(&tasklist_lock);
}