https://bugs.kde.org/show_bug.cgi?id=409141
Roman Kagan <rvka...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rvka...@gmail.com
--- Comment #7 from Roman Kagan <rvka...@gmail.com> ---
Repro:
$ cat x.c
#include <signal.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>
void *t(void *p)
{
sleep(1000);
return NULL;
}
int main(int argc, char **argv)
{
pthread_t thr;
int s = atoi(argv[1]);
pthread_create(&thr, NULL, t, NULL);
raise(s);
}
$ gcc -pthread -g x.c -o x
$ valgrind ./x 15
==18380== Memcheck, a memory error detector
==18380== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==18380== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==18380== Command: ./x 15
==18380==
==18380==
==18380== Process terminating with default action of signal 15 (SIGTERM)
==18380== at 0x4881D15: raise (in /usr/lib64/libpthread-2.29.so)
==18380== by 0x4011BC: main (x.c:20)
==18380==
==18380== HEAP SUMMARY:
==18380== in use at exit: 272 bytes in 1 blocks
==18380== total heap usage: 1 allocs, 0 frees, 272 bytes allocated
==18380==
==18380== LEAK SUMMARY:
==18380== definitely lost: 0 bytes in 0 blocks
==18380== indirectly lost: 0 bytes in 0 blocks
==18380== possibly lost: 272 bytes in 1 blocks
==18380== still reachable: 0 bytes in 0 blocks
==18380== suppressed: 0 bytes in 0 blocks
==18380== Rerun with --leak-check=full to see details of leaked memory
==18380==
==18380== For lists of detected and suppressed errors, rerun with: -s
==18380== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Terminated
$ valgrind ./x 9
==18382== Memcheck, a memory error detector
==18382== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==18382== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==18382== Command: ./x 9
==18382==
...
Here it the main thread becomes zombie, the child thread sleeps until the
expiration of 1000s. In the real-world case the child thread did a wait on a
mutex which never got released.
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