On Sat, Jul 15, 2023 at 02:24:59PM +0500, Mikhail Gavrilov wrote: > Hi, > It's ok that I see "mm/pgtable-generic.c:53: bad pmd > (____ptrval____)(8000000100077061)" every boot time? > Unfortunately bisect couldn't say which of commits > # possible first bad commit: > [be872f83bf571f4f9a0ac25e2c9c36e905a36619] mm/pagewalk: > walk_pte_range() allow for pte_offset_map() > # possible first bad commit: > [7780d04046a2288ab85d88bedacc60fa4fad9971] mm/pagewalkers: > ACTION_AGAIN if pte_offset_map_lock() fails > # possible first bad commit: > [2798bbe75b9c2752b46d292e5c2a49f49da36418] mm/page_vma_mapped: > pte_offset_map_nolock() not pte_lockptr() > # possible first bad commit: > [90f43b0a13cddb09e2686f4d976751c0a9b8b197] mm/page_vma_mapped: > reformat map_pte() with less indentation > # possible first bad commit: > [45fe85e9811ede2d65b21724cae50d6a0563e452] mm/page_vma_mapped: delete > bogosity in page_vma_mapped_walk() > # possible first bad commit: > [65747aaf42b7db6acb8e57a2b8e9959928f404dd] mm/filemap: allow > pte_offset_map_lock() to fail > # possible first bad commit: > [0d940a9b270b9220dcff74d8e9123c9788365751] mm/pgtable: allow > pte_offset_map[_lock]() to fail > definitely first bad because my machine on which I am was doing > bisection is unbootable on these commits. > I hope Hugh Dickins can figure out what's going on here. He is the > author of these commits. > > All mine machines are based on the AMD platform two 7950X and one 5900HX. > > It seems that this message is harmless for the system in any way, but > I can't judge it is a bug or not. > >From the user side it looks like regression because on commit > 46c475bd676bb05077c8a38b37f175552f035406 this message was absent. What are you doing on your system that leads into this regression? Anyway, I'm adding this regression to be tracked with regzbot: #regzbot ^introduced: 0d940a9b270b92 #regzbot title: undescribed regression due to allowing failing pte_offset_map[_lock]() Thanks. -- An old man doll... just what I always wanted! - Clara
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