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| author | Alessandro Carminati <[email protected]> | 2025-06-26 08:38:09 +0000 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2025-06-29 21:10:41 +0000 |
| commit | ca46946a482238b0cdea459fb82fc837fb36260e (patch) | |
| tree | 6a54fff050b9c12c96e38b9d7d3b700843c8861e /drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c | |
| parent | Linux 6.16-rc4 (diff) | |
| download | kernel-ca46946a482238b0cdea459fb82fc837fb36260e.tar.gz kernel-ca46946a482238b0cdea459fb82fc837fb36260e.zip | |
regulator: core: fix NULL dereference on unbind due to stale coupling data
Failing to reset coupling_desc.n_coupled after freeing coupled_rdevs can
lead to NULL pointer dereference when regulators are accessed post-unbind.
This can happen during runtime PM or other regulator operations that rely
on coupling metadata.
For example, on ridesx4, unbinding the 'reg-dummy' platform device triggers
a panic in regulator_lock_recursive() due to stale coupling state.
Ensure n_coupled is set to 0 to prevent access to invalid pointers.
Signed-off-by: Alessandro Carminati <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c')
0 files changed, 0 insertions, 0 deletions