cff0b9e5ca
This tests repeatedly creates and kills children, so some corner
cases in handling of not-quite-existing processes can be observed.
Previously, strace was crashing in the following situation:
13994 ????( <unfinished ...>
...
13994 <... ???? resumed>) = ?
as tcp->s_ent wasn't initialised on syscall entering and
strace.c:print_event_exit segfaulted when tried to access
tcp->s_ent->sys_name.
* tests/kill_child.c: New file.
* tests/kill_child.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add kill_child.
(MISC_TESTS): Add kill_child.test.
47 lines
654 B
C
47 lines
654 B
C
/**
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* Check for a corner case that previously lead to segfault due to an attempt
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* to access unitialised tcp->s_ent.
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*
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* 13994 ????( <unfinished ...>
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* ...
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* 13994 <... ???? resumed>) = ?
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*/
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#include <signal.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "tests.h"
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#define ITERS 10000
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#define SC_ITERS 10000
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int main(void)
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{
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unsigned int i;
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for (i = 0; i < ITERS; i++) {
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int pid = fork();
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if (pid < 0)
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perror_msg_and_fail("fork");
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if (!pid) {
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unsigned int j;
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for (j = 0; j < SC_ITERS; j++)
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getuid();
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pause();
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return 0;
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}
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kill(pid, SIGKILL);
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wait(NULL);
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}
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return 0;
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}
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