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| author | Jakub Kicinski <kuba@kernel.org> | 2022-06-23 22:33:24 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-06-23 22:33:24 +0300 |
| commit | 93817be8b62c7fa1f1bdc3e8c037a73a60026be9 (patch) | |
| tree | 873c207abc783edb4ead73b2b3a8a9b105f94420 /drivers/dma-buf/udmabuf.c | |
| parent | ccb9bc1dfa444e3541622ccfff135e83d2a569d1 (diff) | |
| parent | 399bd66e219e331976fe6fa6ab81a023c0c97870 (diff) | |
| download | linux-93817be8b62c7fa1f1bdc3e8c037a73a60026be9.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/dma-buf/udmabuf.c')
| -rw-r--r-- | drivers/dma-buf/udmabuf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c index e7330684d3b8..9631f2fd2faf 100644 --- a/drivers/dma-buf/udmabuf.c +++ b/drivers/dma-buf/udmabuf.c @@ -32,8 +32,11 @@ static vm_fault_t udmabuf_vm_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struct udmabuf *ubuf = vma->vm_private_data; + pgoff_t pgoff = vmf->pgoff; - vmf->page = ubuf->pages[vmf->pgoff]; + if (pgoff >= ubuf->pagecount) + return VM_FAULT_SIGBUS; + vmf->page = ubuf->pages[pgoff]; get_page(vmf->page); return 0; } |