Date: Wed, 08 Sep 2021 04:25:07 +0000 From: bugzilla-noreply@freebsd.org To: threads@FreeBSD.org Subject: [Bug 258360] race between setlocale() and iconv_open() causes segfault Message-ID: <bug-258360-13406@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258360 Bug ID: 258360 Summary: race between setlocale() and iconv_open() causes segfault Product: Base System Version: 13.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: threads Assignee: threads@FreeBSD.org Reporter: henry.hu.sh@gmail.com This was discovered by Dmitry Wagin in PR 258212. I'm able to reproduce the crash with a very simple program, which simply calls iconv_open() and setlocale() concurrently: #include <iconv.h> #include <pthread.h> #include <locale.h> void* iconv_thread(void* arg) { iconv_open("UTF-8", "UTF-8"); return NULL; } void* locale_thread(void* arg) { setlocale(LC_ALL, "en_US.UTF-8"); return NULL; } int main() { pthread_t t1, t2; pthread_create(&t1, NULL, iconv_thread, NULL); pthread_create(&t2, NULL, locale_thread, NULL); pthread_join(t1, NULL); pthread_join(t2, NULL); } On my machine it has a 7/10 chance of crashing. On another user's machine it only crashes 1/15, so repeated testing is needed. The stack can be seen at https://pastebin.com/raw/isvMUDRd --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-258360-13406>