drm/tilcdc: Fix removal actions in case of failed probe

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/tilcdc: Fix removal actions in case of failed probe The drm_kms_helper_poll_fini() and drm_atomic_helper_shutdown() helpers should only be called when the device has been successfully registered. Currently, these functions are called unconditionally in tilcdc_fini(), which causes warnings during probe deferral scenarios. [ 7.972317] WARNING: CPU: 0 PID: 23 at drivers/gpu/drm/drm_atomic_state_helper.c:175 drm_atomic_helper_crtc_duplicate_state+0x60/0x68 ... [ 8.005820] drm_atomic_helper_crtc_duplicate_state from drm_atomic_get_crtc_state+0x68/0x108 [ 8.005858] drm_atomic_get_crtc_state from drm_atomic_helper_disable_all+0x90/0x1c8 [ 8.005885] drm_atomic_helper_disable_all from drm_atomic_helper_shutdown+0x90/0x144 [ 8.005911] drm_atomic_helper_shutdown from tilcdc_fini+0x68/0xf8 [tilcdc] [ 8.005957] tilcdc_fini [tilcdc] from tilcdc_pdev_probe+0xb0/0x6d4 [tilcdc] Fix this by rewriting the failed probe cleanup path using the standard goto error handling pattern, which ensures that cleanup functions are only called on successfully initialized resources. Additionally, remove the now-unnecessary is_registered flag.

Timeline

1. Jan 14, 2026, 3:07 PM UTCCVE published
2. Oct 21, 2026, 12:38 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 69f03be1fa08a66735d53d92d3429c052540e3bf · fixed in 21e52dc7762908c3d499cfb493d1b8281fc1d3ab; From 3c4babae3c4a1ae05f8f3f5f3d50c440ead7ca6a · fixed in 28138ea7180c382b449ba9dce12fdec68880dea4; From 3c4babae3c4a1ae05f8f3f5f3d50c440ead7ca6a · fixed in 71be8825e83c90c1e020feb77b29e6a99629e642; From 3c4babae3c4a1ae05f8f3f5f3d50c440ead7ca6a · fixed in a585c7ef9cabda58088916baedc6573e9a5cd2a7; From 6.6.2 · fixed in 6.6.120; From 6.5.12 · fixed in 6.6

• Linux Linux

  6.7

• KernelLinux

  fixed in 6.6.120; From 6.7.0 · fixed in 6.12.114; fixed in 6.18.4

References 4