possible kernel bug in signal transit.

[Alex Lyashkov]

Hello All

I analyze kernel vanila 2.6.4 and found one possible bug in
__kill_pg_info function.

        for_each_task_pid(pgrp, PIDTYPE_PGID, p, l, pid) {
                err = group_send_sig_info(sig, info, p);
                if (retval)
                        retval = err;
        }
but I think if (retval) is incorrect check. possible this cycle must be
        for_each_task_pid(pgrp, PIDTYPE_PGID, p, l, pid) {
                err = group_send_sig_info(sig, info, p);
                if (ret) {
                        retval = err;
			break;
		}
        }
because in original variant me assign to retval only first value from
ret and other be ignored if this value be 0.


-- 
Alex Lyashkov <shadow@xxxxxxxxx>
PSoft
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