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| author |   Thomas Zimmermann <tzimmermann@suse.de> | 2022-10-20 09:09:00 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-10-20 09:09:00 +0200 |
| commit | 1aca5ce036e3499336d1a2ace3070f908381c055 (patch) | |
| tree | 32b53fca3cff8c6c084d9c1d94d1761c3618e739 /drivers/misc/pci_endpoint_test.c | |
| parent | drm/amdgpu: use DRM_SCHED_FENCE_DONT_PIPELINE for VM updates (diff) | |
| parent | Linux 6.1-rc1 (diff) | |
| download | wireguard-linux-1aca5ce036e3499336d1a2ace3070f908381c055.tar.xz wireguard-linux-1aca5ce036e3499336d1a2ace3070f908381c055.zip | |
Merge drm/drm-fixes into drm-misc-fixes
Backmerging to get v6.1-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'drivers/misc/pci_endpoint_test.c')
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 8f786a225dcf..11530b4ec389 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -332,6 +332,22 @@ static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test, return false; } +static int pci_endpoint_test_validate_xfer_params(struct device *dev, + struct pci_endpoint_test_xfer_param *param, size_t alignment) +{ + if (!param->size) { + dev_dbg(dev, "Data size is zero\n"); + return -EINVAL; + } + + if (param->size > SIZE_MAX - alignment) { + dev_dbg(dev, "Maximum transfer data size exceeded\n"); + return -EINVAL; + } + + return 0; +} + static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, unsigned long arg) { @@ -363,9 +379,11 @@ static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, return false; } + err = pci_endpoint_test_validate_xfer_params(dev, ¶m, alignment); + if (err) + return false; + size = param.size; - if (size > SIZE_MAX - alignment) - goto err; use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA); if (use_dma) @@ -497,9 +515,11 @@ static bool pci_endpoint_test_write(struct pci_endpoint_test *test, return false; } + err = pci_endpoint_test_validate_xfer_params(dev, ¶m, alignment); + if (err) + return false; + size = param.size; - if (size > SIZE_MAX - alignment) - goto err; use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA); if (use_dma) @@ -595,9 +615,11 @@ static bool pci_endpoint_test_read(struct pci_endpoint_test *test, return false; } + err = pci_endpoint_test_validate_xfer_params(dev, ¶m, alignment); + if (err) + return false; + size = param.size; - if (size > SIZE_MAX - alignment) - goto err; use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA); if (use_dma) |