From: Florin Coras <fcoras@cisco.com>
Date: Sat, 8 May 2021 22:29:50 +0000 (-0700)
Subject: svm: try chunk alloc only if enough space available
X-Git-Tag: v21.10-rc0~96
X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff_plain;h=0d31b9cb9f069f70592a83f95a7e63fab79719f6

svm: try chunk alloc only if enough space available

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I3c52dd783601d50e981f75bd05a7b95c03bb5c22
---

diff --git a/src/svm/fifo_segment.c b/src/svm/fifo_segment.c
index cde906fe799..d8b3b259038 100644
--- a/src/svm/fifo_segment.c
+++ b/src/svm/fifo_segment.c
@@ -694,7 +694,8 @@ free_list:
       if (data_bytes <= fss_fl_chunk_bytes (fss) + n_free)
 	{
 	  u32 min_size = FIFO_SEGMENT_MIN_FIFO_SIZE;
-
+	  if (n_free < min_size)
+	    goto done;
 	  batch = (data_bytes - fss_fl_chunk_bytes (fss)) / min_size;
 	  batch = clib_min (batch + 1, n_free / min_size);
 	  if (fsh_try_alloc_chunk_batch (fsh, fss, 0, batch))