diff options
| author | Joel Stanley <joel@jms.id.au> | 2020-08-31 03:46:52 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2020-08-31 03:46:57 +0300 |
| commit | 0dd0c8c492fa70707ca4f0d36dcb2e3c64105b16 (patch) | |
| tree | a420abd8f26264544246602c60d161a7cc4de390 /drivers/xen/gntdev-dmabuf.c | |
| parent | 31d8605658d37d9197a989838508481d5dc1d8bc (diff) | |
| parent | 9ece50d8a470ca7235ffd6ac0f9c5f0f201fe2c8 (diff) | |
| download | linux-dev-5.8.tar.xz | |
Merge tag 'v5.8.5' into dev-5.8dev-5.8
This is the 5.8.5 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'drivers/xen/gntdev-dmabuf.c')
| -rw-r--r-- | drivers/xen/gntdev-dmabuf.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/xen/gntdev-dmabuf.c b/drivers/xen/gntdev-dmabuf.c index 75d3bb948bf3..b1b6eebafd5d 100644 --- a/drivers/xen/gntdev-dmabuf.c +++ b/drivers/xen/gntdev-dmabuf.c @@ -613,6 +613,14 @@ dmabuf_imp_to_refs(struct gntdev_dmabuf_priv *priv, struct device *dev, goto fail_detach; } + /* Check that we have zero offset. */ + if (sgt->sgl->offset) { + ret = ERR_PTR(-EINVAL); + pr_debug("DMA buffer has %d bytes offset, user-space expects 0\n", + sgt->sgl->offset); + goto fail_unmap; + } + /* Check number of pages that imported buffer has. */ if (attach->dmabuf->size != gntdev_dmabuf->nr_pages << PAGE_SHIFT) { ret = ERR_PTR(-EINVAL); |