From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 3BDEB464CF; Wed, 2 Apr 2025 14:43:05 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id C285640275; Wed, 2 Apr 2025 14:43:04 +0200 (CEST) Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) by mails.dpdk.org (Postfix) with ESMTP id DA3FF40273 for ; Wed, 2 Apr 2025 14:43:02 +0200 (CEST) Received: from mail.maildlp.com (unknown [172.19.88.234]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4ZSPcP4nbwz1R7S9; Wed, 2 Apr 2025 20:41:09 +0800 (CST) Received: from kwepemo500011.china.huawei.com (unknown [7.202.195.194]) by mail.maildlp.com (Postfix) with ESMTPS id 245B51402A5; Wed, 2 Apr 2025 20:43:00 +0800 (CST) Received: from localhost.huawei.com (10.50.165.33) by kwepemo500011.china.huawei.com (7.202.195.194) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 2 Apr 2025 20:42:59 +0800 From: Dengdui Huang To: CC: , , , , , , , Subject: [PATCH] mem: fix infinite loop Date: Wed, 2 Apr 2025 20:42:58 +0800 Message-ID: <20250402124258.2299435-1-huangdengdui@huawei.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.50.165.33] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemo500011.china.huawei.com (7.202.195.194) X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 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@dpdk.org Signed-off-by: Dengdui Huang --- 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