From: Xu Huijie <xuhuijie2@huawei.com>
To: <linux-mm@kvack.org>
Cc: <wuxu.wu@huawei.com>
Subject: [PATCH] add kernel log when allocate a new virtual mapping failed because of overcommit
Date: Wed, 30 Jun 2021 15:44:33 +0800 [thread overview]
Message-ID: <20210630074433.41992-1-xuhuijie2@huawei.com> (raw)
From: xuhuijie <xuhuijie2@huawei.com>
diff --git a/mm/mmap.c b/mm/mmap.c
index aa9de981b..f019fc6b2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1758,8 +1758,10 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
*/
if (accountable_mapping(file, vm_flags)) {
charged = len >> PAGE_SHIFT;
- if (security_vm_enough_memory_mm(mm, charged))
+ if (security_vm_enough_memory_mm(mm, charged)) {
+ pr_err("Unable to allocate a new virtual mapping because of the overcommit\n");
return -ENOMEM;
+ }
vm_flags |= VM_ACCOUNT;
}
--
2.23.0
next reply other threads:[~2021-06-30 7:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 7:44 Xu Huijie [this message]
2021-06-30 13:29 ` Matthew Wilcox
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