Public bug reported:
When commit 83e3c48729d9ebb7af5a31a504f3fd6aff0348c4 ("mm/sparsemem:
Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y") was
backported, it broke the exporting of mem_section on vmcoreinfo.
makedumpfile will fail to dump in that case. Backporting a kernel fix
will make it work again, but that means that some kernel versions won't
be dumpable. A solution for makedumpfile should be done as well.
Cascardo.
** Affects: makedumpfile (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1750021
Title:
fails to dump with latest kpti fixes
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