https://bugs.kde.org/show_bug.cgi?id=457898
Bug ID: 457898
Summary: Assertion 'found' failed. with multiple thread
Product: valgrind
Version: 3.19.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: helgrind
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Helgrind reports an error in the very simple code below:
STEPS TO REPRODUCE
In any .c file:
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
void *routine(void *nop)
{
usleep(1);
return (nop);
}
int main(void)
{
int i;
int max;
pthread_t *threads;
i = 0;
max = 5;
threads = malloc(sizeof(*threads) * max);
while (i < max)
if (pthread_create((threads + i++), NULL, &routine, NULL))
exit (1);
i = 0;
while (i < max)
if (pthread_join(*(threads + i++), NULL))
exit (2);
free(threads);
return (0);
}
OBSERVED RESULT
==3537== Helgrind, a thread error detector
==3537== Copyright (C) 2007-2017, and GNU GPL'd, by OpenWorks LLP et al.
==3537== Using Valgrind-3.19.0 and LibVEX; rerun with -h for copyright info
==3537== Command: ./a.out
==3537==
Helgrind: hg_main.c:5379 (hg_handle_client_request): Assertion 'found' failed.
host stacktrace:
==3537== at 0x58026BCA: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
==3537== by 0x58026CF7: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
==3537== by 0x58026E9B: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
==3537== by 0x5801014A: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
==3537== by 0x5803B454: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
==3537== by 0x58082CC7: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
==3537== by 0x580C97C0: ??? (in /usr/lib/valgrind/helgrind-amd64-linux)
sched status:
running_tid=1
Thread 1: status = VgTs_Runnable (lwpid 3537)
==3537== at 0x484A943: ??? (in
/usr/lib/valgrind/vgpreload_helgrind-amd64-linux.so)
==3537== by 0x10924D: main (in /home/adrien/Prog/philosophers/a.out)
client stack range: [0x1FFEFFE000 0x1FFF000FFF] client SP: 0x1FFF000390
valgrind stack range: [0x1002E8E000 0x1002F8DFFF] top usage: 8880 of 1048576
Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.
If that doesn't help, please report this bug to: www.valgrind.org
In the bug report, send all the above text, the valgrind
version, and what OS and version you are using. Thanks.
EXPECTED RESULT
No errors
SOFTWARE/OS VERSIONS
Tested on several systems (Ubuntu20.04 and arch)
ADDITIONAL INFORMATION
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