Hi all:
We are testing several embedded Linux. When we use LTP to test these Linux, we
find that the testcase sigtimedwait01 always failed with Segment Fault.
As the testcase failed on x86_64, i586 and arm, we found that maybe glibc
doesn’t deal with the bad address
The testcase C program file is :
testcases/kernel/syscalls/sigwaitinfo/sigwaitinfo.c
The result is :
sigtimedwait01 6 TPASS : Test passed
sigtimedwait01 0 TINFO : 0x80493c0, 10
sigtimedwait01 7 TBROK : unexpected signal 11 received (pid = 4057).
sigtimedwait01 8 TBROK : Remaining cases broken
it always fail after line 334, because of Segment Fault
332 void test_bad_address2(swi_func sigwaitinfo, int signo)
333 {
334 TEST(sigwaitinfo((void*)1, NULL, NULL);
335 REPORT_SUCCESS(-1, EFAULT);
336 }
We can see that, here, we do
Sigtimedwait((void*)1, NULL, NULL));
And the parameter (void *)1 is a bad address.
This test can make things easier.
#include <stdio.h>
#include <signal.h>
int main()
{
int ret;
ret = sigtimedwait((void*)1, NULL, NULL);
printf("test end\n");
return 0;
}
Why LTP expect to get the EFAULT error?
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