Unverified Commit 5c282702 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!5339 binder: fix race between mmput() and do_exit() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zheng Yejian <zhengyejian1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/ISGXAYLUYQ6CLF56SWADT65X5N6GA2IV/ 
 
https://gitee.com/src-openeuler/kernel/issues/I99JWJ 
 
Link:https://gitee.com/openeuler/kernel/pulls/5339

 

Reviewed-by: default avatarXu Kuohai <xukuohai@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 0086af96 7c59c29b

drivers/android/binder_alloc.c

+2 −2
Original line number Diff line number Diff line
@@ -271,7 +271,7 @@ static int binder_update_page_range(struct binder_alloc *alloc, int allocate, 
	}

	if (mm) {

		mmap_write_unlock(mm);

		mmput(mm);

		mmput_async(mm);

	}

	return 0;
@@ -304,7 +304,7 @@ static int binder_update_page_range(struct binder_alloc *alloc, int allocate, 
err_no_vma:

	if (mm) {

		mmap_write_unlock(mm);

		mmput(mm);

		mmput_async(mm);

	}

	return vma ? -ENOMEM : -ESRCH;

}