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Andrew Cooper
8e51c8f1d4
xc_dom_alloc_segment() is passed a size in bytes, calculates a size in pages from it, then fills in the new segment information with a bytes value re-calculated from the number of pages. This causes the module information given to the guest (MB, or PVH) to have incorrect sizes; specifically, sizes rounded up to the next page. This in turn is problematic for Xen. When Xen finds a gzipped module, it peeks at the end metadata to judge the decompressed size, which is a -4 backreference from the reported end of the module. Fill in seg->vend using the correct number of bytes. Fixes:ea7c8a3d0e("libxc: reorganize domain builder guest memory allocator") Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Anthony PERARD <anthony.perard@vates.tech> master commit:4c3a618b0amaster date: 2024-07-02 10:50:18 +0100