[PATCH] mem: fix infinite loop

[Dengdui Huang]

When the process address space is insufficient,
mmap will fail, which will cause an infinite loop.
This pathc fix it.

Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
Cc: stable at dpdk.org

Signed-off-by: Dengdui Huang <huangdengdui at huawei.com>
---
 lib/eal/common/eal_common_memory.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/eal/common/eal_common_memory.c b/lib/eal/common/eal_common_memory.c
index a185e0b580..0c997201bd 100644
--- a/lib/eal/common/eal_common_memory.c
+++ b/lib/eal/common/eal_common_memory.c
@@ -101,8 +101,12 @@ eal_get_virtual_area(void *requested_addr, size_t *size,
 
 		mapped_addr = eal_mem_reserve(
 			requested_addr, (size_t)map_sz, reserve_flags);
-		if ((mapped_addr == NULL) && allow_shrink)
-			*size -= page_sz;
+		if (mapped_addr == NULL) {
+			if (allow_shrink)
+				*size -= page_sz;
+			else
+				break;
+		}
 
 		if ((mapped_addr != NULL) && addr_is_hint &&
 				(mapped_addr != requested_addr)) {
-- 
2.33.0