Signals not being delivered - unkillable process
#include <stdio.h>
#include <signal.h>
#include <sys/types.h>
#include <unistd.h>
static void handle_signal(int param)
{
}
int main()
{
for (int signal_number = 1; signal_number <= 31; signal_number++) {
(void) signal(signal_number, handle_signal);
}
// Issue can't seem to be triggered with raise(3).
printf("PID: %d\n", (int) getpid());
while (1) ;
}Start the program and send any other signal than SIGKILL or SIGSTOP, for instance ^C.
After it has received a signal, it cannot be killed or stopped.
#include <stdio.h>
#include <signal.h>
#include <sys/types.h>
#include <unistd.h>
static void handle_signal(int param)
{
}
int main()
{
(void) signal(SIGINT, handle_signal);
// Issue can't seem to be triggered with raise(3).
printf("PID: %d\n", (int) getpid());
while (1) ;
}Start program, attempt to interrupt it with ^C. It can't be killed with SIGKILL, but it can be killed with SIGHUP.
Last tested 2024-08-24 99b0181: still the same
SerenityOS / serenity
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