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| author | Zenghui Yu <yuzenghui@huawei.com> | 2024-07-29 04:46:04 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2024-07-29 09:02:54 +0200 |
| commit | 291e4baf70019f17a81b7b47aeb186b27d222159 (patch) | |
| tree | 3270dbd8a16a07b6d4ca9684a5a163f1956dfcde /tools/testing | |
| parent | dt-bindings: display: panel: samsung,atna33xc20: Document ATNA45AF01 (diff) | |
| download | linux-291e4baf70019f17a81b7b47aeb186b27d222159.tar.xz linux-291e4baf70019f17a81b7b47aeb186b27d222159.zip | |
kselftests: dmabuf-heaps: Ensure the driver name is null-terminated
Even if a vgem device is configured in, we will skip the import_vgem_fd()
test almost every time.
TAP version 13
1..11
# Testing heap: system
# =======================================
# Testing allocation and importing:
ok 1 # SKIP Could not open vgem -1
The problem is that we use the DRM_IOCTL_VERSION ioctl to query the driver
version information but leave the name field a non-null-terminated string.
Terminate it properly to actually test against the vgem device.
While at it, let's check the length of the driver name is exactly 4 bytes
and return early otherwise (in case there is a name like "vgemfoo" that
gets converted to "vgem\0" unexpectedly).
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20240729024604.2046-1-yuzenghui@huawei.com
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c index 5f541522364f..5d0a809dc2df 100644 --- a/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c +++ b/tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c @@ -29,9 +29,11 @@ static int check_vgem(int fd) version.name = name; ret = ioctl(fd, DRM_IOCTL_VERSION, &version); - if (ret) + if (ret || version.name_len != 4) return 0; + name[4] = '\0'; + return !strcmp(name, "vgem"); } |