| Summary: |
<sys-apps/kexec-tools-2.0.15 build_mem_phdrs() was not checking whether a p_paddr is invalid while kernel is providing invalid PT_LOAD entries |
| Product: |
Gentoo Linux
|
Reporter: |
Xiami <i> |
| Component: |
Current packages | Assignee: |
Gentoo's Team for Core System packages <base-system> |
| Status: |
RESOLVED
FIXED
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| Severity: |
critical
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CC: |
pastas4
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| Priority: |
Normal
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|
|
| Version: |
unspecified | |
|
| Hardware: |
All | |
|
| OS: |
Linux | |
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| Whiteboard: |
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Package list:
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Runtime testing required:
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| Attachments: |
Kernel patch
Patch for kexec-tools-2.0.14
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Created attachment 511806 [details, diff] Kernel patch I'm running the latest stablized kexec-tools (2.0.14) and when loading crash dump core it cries out: ELF core (kcore) parse failed After digging into it, I found build_mem_phdrs check physical addr wrap arounds and some segments in /proc/kcore show a physical addr of 0xFFFFFFFFFFFFFFFF. Kernel's commit log shows it starts assigning invalid PT_LOAD physical address as -1 since Feb 27, 2017. The first released kernel containing this code is 4.11 . The first released kexec-tools containing a fix is 2.0.15 . Also, a patch is found for kexec-tools-2.0.14 source rpms. Since we had >=sys-kernel/gentoo-sources-4.11 stablized, I recommend stablizing one of >=sys-apps/kexec-tools-2.0.15 .