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From 9369164f45ba19519158286590aaefae1c64ef05 Mon Sep 17 00:00:00 2001
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From: William Brown <firstyear@redhat.com>
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Date: Thu, 5 Oct 2017 09:54:48 +1000
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Subject: [PATCH] Ticket 49392 - memavailable not available
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Bug Description: On certain linux platforms memAvailable is
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not actually available! This means that the value was 0, so
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cgroup max was read instead, setting the system ram to:
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9223372036854771712
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That's a bit excessive, and can cause memory allocations to fail.
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Fix Description: If memavail can't be found, fall back to
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memtotal instead.
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https://pagure.io/389-ds-base/issue/49392
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Author: wibrown
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Review by: mreynolds (Thanks!)
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---
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ldap/servers/slapd/slapi_pal.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/ldap/servers/slapd/slapi_pal.c b/ldap/servers/slapd/slapi_pal.c
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index 38c178cfa..600d03d4d 100644
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--- a/ldap/servers/slapd/slapi_pal.c
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+++ b/ldap/servers/slapd/slapi_pal.c
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@@ -155,7 +155,16 @@ spal_meminfo_get()
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/* Both memtotal and memavail are in kb */
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memtotal = memtotal * 1024;
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- memavail = memavail * 1024;
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+
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+ /*
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+ * Oracle Enterprise Linux doesn't provide a valid memavail value, so fall
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+ * back to 80% of memtotal.
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+ */
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+ if (memavail == 0) {
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+ memavail = memtotal * 0.8;
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+ } else {
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+ memavail = memavail * 1024;
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+ }
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/* If it's possible, get our cgroup info */
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uint64_t cg_mem_soft = 0;
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--
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2.13.6
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