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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:43:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:43:28 +0000
commitd8e7eb3d28f5c8e73b91bc95b2f01391711b1839 (patch)
tree4281b77072f7954692604850497ede427d7f9e22 /drivers/iommu/iommufd/selftest.c
parentAdding debian version 6.7.7-1. (diff)
downloadlinux-d8e7eb3d28f5c8e73b91bc95b2f01391711b1839.tar.xz
linux-d8e7eb3d28f5c8e73b91bc95b2f01391711b1839.zip
Merging upstream version 6.7.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iommu/iommufd/selftest.c')
-rw-r--r--drivers/iommu/iommufd/selftest.c27
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c
index 022ef8f550..d437ffb715 100644
--- a/drivers/iommu/iommufd/selftest.c
+++ b/drivers/iommu/iommufd/selftest.c
@@ -48,8 +48,8 @@ enum {
* In syzkaller mode the 64 bit IOVA is converted into an nth area and offset
* value. This has a much smaller randomization space and syzkaller can hit it.
*/
-static unsigned long iommufd_test_syz_conv_iova(struct io_pagetable *iopt,
- u64 *iova)
+static unsigned long __iommufd_test_syz_conv_iova(struct io_pagetable *iopt,
+ u64 *iova)
{
struct syz_layout {
__u32 nth_area;
@@ -73,6 +73,21 @@ static unsigned long iommufd_test_syz_conv_iova(struct io_pagetable *iopt,
return 0;
}
+static unsigned long iommufd_test_syz_conv_iova(struct iommufd_access *access,
+ u64 *iova)
+{
+ unsigned long ret;
+
+ mutex_lock(&access->ioas_lock);
+ if (!access->ioas) {
+ mutex_unlock(&access->ioas_lock);
+ return 0;
+ }
+ ret = __iommufd_test_syz_conv_iova(&access->ioas->iopt, iova);
+ mutex_unlock(&access->ioas_lock);
+ return ret;
+}
+
void iommufd_test_syz_conv_iova_id(struct iommufd_ucmd *ucmd,
unsigned int ioas_id, u64 *iova, u32 *flags)
{
@@ -85,7 +100,7 @@ void iommufd_test_syz_conv_iova_id(struct iommufd_ucmd *ucmd,
ioas = iommufd_get_ioas(ucmd->ictx, ioas_id);
if (IS_ERR(ioas))
return;
- *iova = iommufd_test_syz_conv_iova(&ioas->iopt, iova);
+ *iova = __iommufd_test_syz_conv_iova(&ioas->iopt, iova);
iommufd_put_object(ucmd->ictx, &ioas->obj);
}
@@ -1045,7 +1060,7 @@ static int iommufd_test_access_pages(struct iommufd_ucmd *ucmd,
}
if (flags & MOCK_FLAGS_ACCESS_SYZ)
- iova = iommufd_test_syz_conv_iova(&staccess->access->ioas->iopt,
+ iova = iommufd_test_syz_conv_iova(staccess->access,
&cmd->access_pages.iova);
npages = (ALIGN(iova + length, PAGE_SIZE) -
@@ -1147,8 +1162,8 @@ static int iommufd_test_access_rw(struct iommufd_ucmd *ucmd,
}
if (flags & MOCK_FLAGS_ACCESS_SYZ)
- iova = iommufd_test_syz_conv_iova(&staccess->access->ioas->iopt,
- &cmd->access_rw.iova);
+ iova = iommufd_test_syz_conv_iova(staccess->access,
+ &cmd->access_rw.iova);
rc = iommufd_access_rw(staccess->access, iova, tmp, length, flags);
if (rc)