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SubjectRe: possible kernel bug in signal transit.
Alex Lyashkov <shadow@psoft.net> wrote:
>
> > Thanks for checking though..
> No. it can`t return final non-zero-returning group_send_sig_info() if
> first call group_send_sig_info return 0.

you're right. How about the nice and simple version?

int __kill_pg_info(int sig, struct siginfo *info, pid_t pgrp)
{
struct task_struct *p;
struct list_head *l;
struct pid *pid;
int retval;
int found;

if (pgrp <= 0)
return -EINVAL;

found = 0;
retval = 0;
for_each_task_pid(pgrp, PIDTYPE_PGID, p, l, pid) {
int err;

found = 1;
err = group_send_sig_info(sig, info, p);
if (!retval)
retval = err;
}
return found ? retval : -ESRCH;
}

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