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> kernel/ptrace.c: In function `ptrace_attach': |
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> kernel/ptrace.c:138: error: `__KERNEL_TEXT_OFFSET' undeclared (first use |
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> in this function) |
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[...] |
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> Building from 'regular' gentoo kernel sources works fine, even with the |
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> security stuff selected (as per an selinux kernel). |
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> |
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> Is this a known incompatibility? |
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|
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that define comes from PaX (needed for KERNEXEC) and should be |
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defined regardless of whether KERNEXEC is enabled or disabled. |
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|
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what happens here is that ptrace.c uses the macro smp_rmb() |
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that on i386 uses the macro alternative() from |
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include/asm-i386/system.h. alternative() in turn references |
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__KERNEL_TEXT_OFFSET that comes from include/asm-i386/page.h |
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except it seems that uml doesn't use that page.h but its own |
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version (which lacks this define). since i'm not familiar |
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with uml i don't know if it's a bug or feature in uml and how |
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to fix it properly (i guess copying the __KERNEL_TEXT_OFFSET |
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bits into include/asm-um/page.h would work but i'm not sure |
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if it's the cleanest approach). |
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|
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-- |
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