Ollama / Ollama
Ollama minicpm-v:8b SIGSEGV Crash Decoding Valid WebP Image
fix Ollama SIGSEGV segmentation fault WebP image decode Includes evidence for Ollama troubleshooting demand.
- Category
- Ollama
- Error signature
Ollama SIGSEGV: segmentation violation - mtmd_helper_bitmap_init_from_buf decode failure- Quick fix
- Compare the failing environment with a known working setup, then change one configuration value at a time.
- Updated
What this error means
Ollama SIGSEGV: segmentation violation - mtmd_helper_bitmap_init_from_buf decode failure is a Ollama failure pattern reported for developers trying to fix ollama sigsegv segmentation fault webp image decode. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.
Why this happens
minicpm-v:8b crashes with SIGSEGV on specific valid WebP image. Stack trace shows mtmd_helper_bitmap_init_from_buf returns failure but caller dereferences null pointer. Same image works on llama3.2-vision:11b. Reproducible on macOS M4.
Common causes
- Developers using Ollama’s multimodal models hit reproducible crash (SIGSEGV) when processing certain valid WebP images; null pointer dereference in image decoder
- minicpm-v:8b crashes with SIGSEGV on specific valid WebP image. Stack trace shows mtmd_helper_bitmap_init_from_buf returns failure but caller dereferences null pointer. Same image works on llama3.2-vision:11b. Reproducible on macOS M4.
Quick fixes
- Confirm the exact error signature matches
Ollama SIGSEGV: segmentation violation - mtmd_helper_bitmap_init_from_buf decode failure. - Check the Ollama account, local tool state, and provider configuration involved in the failing workflow.
- Compare the failing environment with a known working setup, then change one configuration value at a time.
Platform/tool-specific checks
- Verify the command, editor, extension, or API client that produced the error.
- Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
- Avoid deleting credentials, local model data, or project settings until the failing scope is clear.
Step-by-step troubleshooting
- Capture the exact error message and the command, editor action, or request that triggered it.
- Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
- Review the source evidence below and compare it with your environment.
- Apply one change at a time and rerun the smallest failing action.
- Keep the working fix documented for the team or deployment environment.
How to prevent it
- Keep provider/tool configuration documented.
- Record non-secret diagnostics such as tool version, provider name, model name, and command path.
- Add a lightweight check before CI or production workflows depend on the tool.
Sources checked
Evidence note: minicpm-v:8b crashes with SIGSEGV on specific valid WebP image. Stack trace shows mtmd_helper_bitmap_init_from_buf returns failure but caller dereferences null pointer. Same image works on llama3.2-vision:11b. Reproducible on macOS M4.
Related errors
- Ollama vision model crash
- WebP image decode error
- Ollama multimodal tokenization error
FAQ
What should I check first?
Start with the exact Ollama SIGSEGV: segmentation violation - mtmd_helper_bitmap_init_from_buf decode failure text and the smallest action that reproduces it.
Can I ignore this error?
No. Treat it as a failed Ollama workflow until the root cause is understood.
Is this guaranteed to have one fix?
No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.
How do I know the fix worked?
Rerun the same command, editor action, or request. The fix is working when that action completes without Ollama SIGSEGV: segmentation violation - mtmd_helper_bitmap_init_from_buf decode failure.