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drm/ioc32: stop speculation on the drm_compat_ioctl path

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From Greg Kroah-Hartman
f0e441be08a2eab10b2d06fccfa267ee599dd6b3 in linux-6.18.y/6.18.22
f8995c2df519f382525ca4bc90553ad2ec611067 in mainline linux
This commit is contained in:
jsg
2026-04-12 23:02:30 +00:00
parent dedd674940
commit 3e4da3a243
1 changed files with 2 additions and 0 deletions
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2
sys/dev/pci/drm/drm_ioc32.c
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@@ -28,6 +28,7 @@
* IN THE SOFTWARE.
*/
#include <linux/compat.h>
#include <linux/nospec.h>
#include <linux/ratelimit.h>
#include <linux/export.h>
@@ -374,6 +375,7 @@ long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (nr >= ARRAY_SIZE(drm_compat_ioctls))
return drm_ioctl(filp, cmd, arg);
nr = array_index_nospec(nr, ARRAY_SIZE(drm_compat_ioctls));
fn = drm_compat_ioctls[nr].fn;
if (!fn)
return drm_ioctl(filp, cmd, arg);