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Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index cc45a6b69134..a805c7417cd0 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1134,14 +1134,22 @@ EXPORT_SYMBOL_GPL(kill_pid_info_as_uid);
static int kill_something_info(int sig, struct siginfo *info, int pid)
{
int ret;
- rcu_read_lock();
- if (!pid) {
- ret = kill_pgrp_info(sig, info, task_pgrp(current));
- } else if (pid == -1) {
+
+ if (pid > 0) {
+ rcu_read_lock();
+ ret = kill_pid_info(sig, info, find_vpid(pid));
+ rcu_read_unlock();
+ return ret;
+ }
+
+ read_lock(&tasklist_lock);
+ if (pid != -1) {
+ ret = __kill_pgrp_info(sig, info,
+ pid ? find_vpid(-pid) : task_pgrp(current));
+ } else {
int retval = 0, count = 0;
struct task_struct * p;
- read_lock(&tasklist_lock);
for_each_process(p) {
if (p->pid > 1 && !same_thread_group(p, current)) {
int err = group_send_sig_info(sig, info, p);
@@ -1150,14 +1158,10 @@ static int kill_something_info(int sig, struct siginfo *info, int pid)
retval = err;
}
}
- read_unlock(&tasklist_lock);
ret = count ? retval : -ESRCH;
- } else if (pid < 0) {
- ret = kill_pgrp_info(sig, info, find_vpid(-pid));
- } else {
- ret = kill_pid_info(sig, info, find_vpid(pid));
}
- rcu_read_unlock();
+ read_unlock(&tasklist_lock);
+
return ret;
}