Date: Mon, 11 Oct 2021 15:59:11 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 259076] pthread_mutex_init fails with limited AS Message-ID: <bug-259076-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D259076 Bug ID: 259076 Summary: pthread_mutex_init fails with limited AS Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: misc Assignee: bugs@FreeBSD.org Reporter: dynamic-wind@mail.ru A complex application run in limited address space eventually fails to allo= cate a mutex. pthread_mutex_init normally calls __thr_calloc which calls __crt_calloc in rtld-malloc.c. When out of memory __crt_calloc calls morecore, which always adds NPOOLPAGES (128K) to the requested size (circa 128 bytes for a mutex). This way pthread_mutex_init and others will eventually fail when the address space is both limited and fragmented. A simple fix will be to retry morepages(amt/pagesz) every time morepages(amt/pagesz + NPOOLPAGES) fails. --=20 You are receiving this mail because: You are the assignee for the bug.=
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