Unverified Commit ffa71336 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12014 dma-buf: heaps: Fix off-by-one in CMA heap fault handler 

Merge Pull Request from: @ci-robot 
 
PR sync from: Xiongfeng Wang <wangxiongfeng2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/KW4GZQLZHIXJ5F5CQWRAJSU5MYZWTIXY/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAU9M8 
 
Link:https://gitee.com/openeuler/kernel/pulls/12014

 

Reviewed-by: default avatarWei Li <liwei391@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 63c40ef2 85542965

drivers/dma-buf/heaps/cma_heap.c

+1 −1
Original line number Diff line number Diff line
@@ -165,7 +165,7 @@ static vm_fault_t cma_heap_vm_fault(struct vm_fault *vmf) 
	struct vm_area_struct *vma = vmf->vma;

	struct cma_heap_buffer *buffer = vma->vm_private_data;



	if (vmf->pgoff > buffer->pagecount)

	if (vmf->pgoff >= buffer->pagecount)

		return VM_FAULT_SIGBUS;



	vmf->page = buffer->pages[vmf->pgoff];