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flatmem

About this tag
The flatmem tag on WindowsForum.com covers discussions about the CONFIG_FLATMEM memory model in the Linux kernel, particularly in the context of embedded systems and kernel stability. Recent content highlights a specific bug (CVE-2025-40245) affecting nios2 systems using flatmem, where improper initialization of memblock.current_limit could cause page-frame miscalculations, leading to boot failures or panics. The tag includes references to kernel patches, stable updates, and troubleshooting for developers and system administrators working with flatmem configurations. While the tag is Linux-focused, it may be relevant to Windows users interested in cross-platform kernel comparisons or embedded development.
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    CVE-2025-40245: Linux nios2 boot bug fixed in stable patches (CONFIG_FLATMEM)

    A subtle boot-time initialization bug in the Linux kernel has been disclosed and fixed under CVE-2025-40245: on nios2 systems using CONFIG_FLATMEM the kernel could miscalculate page-frame limits because memblock.current_limit was not pre-initialized before PFN limit calculations, potentially...
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