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Description: Do not try to allocate more than the available memory.
Forwarded: no
Author: Peter Pentchev <roam@ringlet.net>
Last-Update: 2020-11-04
--- a/mbuffer.c
+++ b/mbuffer.c
@@ -1041,6 +1041,11 @@
Blocksize = PgSz;
debugmsg("Blocksize set to physical page size of %ld bytes\n",PgSz);
Numblocks = NumP/50;
+ if ((Blocksize * (long long)Numblocks) > (long long)SSIZE_MAX) {
+ debugmsg("Cannot allocate that many blocks (%lld * %lld > %lld)\n", (long long)Blocksize, (long long)Numblocks, (long long)SSIZE_MAX);
+ while ((Blocksize * (long long)Numblocks) > (long long)SSIZE_MAX)
+ Numblocks >>= 1;
+ }
long mxsemv = maxSemValue();
while ((Numblocks > mxsemv) || (Numblocks > 200)) {
Numblocks >>= 1;
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