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Operation not permitted in a GPU container can originate from seccomp, filesystem permissions, Linux capabilities or another access mechanism. Identify the operation and effective profile. Removing every restriction does not explain which syscall or permission was actually required.
Operation not permitted in a GPU container can originate from seccomp, filesystem permissions, Linux capabilities or another access mechanism. Identify the operation and effective profile. Removing every restriction does not explain which syscall or permission was actually required.
Locate the failing operation
Preserve command, error code and timing. Determine whether failure occurs in runtime startup, device opening or application execution. These stages can have different policies. Use authorized syscall or policy-log observation on a test reproduction without collecting sensitive payloads. Permission denied alone does not prove seccomp: filesystem or device access can fail through another mechanism.
Preserve the effective profile
For Docker, inspect actual SecurityOpt, privileged and capability settings. For Kubernetes, inspect Pod/container securityContext and seccompProfile. RuntimeDefault depends on the runtime; Localhost requires an available node profile. Admission can affect effective configuration beyond the original manifest. NVIDIA_DRIVER_CAPABILITIES selects driver components, whereas Linux capabilities grant kernel privileges. Similar naming does not make them interchangeable.
Build a minimal test
Suppose an application attempts a namespace operation blocked by its profile. A separate minimal command reproduces the syscall failure without loading a model. In a test environment, try a managed profile allowing the necessary operation while preserving other restrictions. This does not assert that ordinary CUDA inference needs blocked syscalls. The requirement belongs to the specific application and launch mode, not every GPU workload.
| Evidence | Supported conclusion |
|---|---|
| Specific syscall | Failure is localized beyond message text |
| Effective profile | Applied policy is known |
| Minimal reproducer | System operation is separated from the model |
| Scoped change | Required permission has been tested |
Choose a minimal correction
If the operation is unnecessary, change the program or launch mode. If required, use a managed profile with justified permission and supported runtime settings. Unconfined and privileged remove different boundaries and may hide several causes simultaneously. Do not promote a diagnostic bypass automatically into production. Version the profile and ensure placement on required nodes when using Localhost. A failure to load the profile itself requires separate Pod-event investigation.
Test a negative case
After correction, confirm the required operation succeeds while an intentionally forbidden test operation remains blocked under the chosen policy. Then run a small compute task and the application. Preserve error, syscall, profile and rationale without secrets. Repeat after runtime upgrades, since RuntimeDefault can change. Recovery means confirmed access to a necessary operation, not the accidental absence of restrictions after granting administrative privileges. A negative check makes the remaining boundary observable and keeps the final configuration tied to the original diagnostic question.
Related operational reading: gpu containers vs vms; hardware security.