Re: [Bug 206569] BUG at mm/filemap.c:2529: VM_BUG_ON_PAGE(page_to_pgoff(page) != offset)
From: Matthew Wilcox <willy@infradead.org>
Date: 2020-02-20 00:25:29
On Wed, Feb 19, 2020 at 02:46:35PM -0800, Andrew Morton wrote:
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Wed, 19 Feb 2020 21:33:32 +0000 bugzilla-daemon@bugzilla.kernel.org wrote:quoted
https://bugzilla.kernel.org/show_bug.cgi?id=206569--- Comment #1 from Denis Lisov (dennis.lissov@gmail.com) ---Upd. Double-checking my kernel settings I found that I've accidentally enabled experimental CONFIG_READ_ONLY_THP_FOR_FS - may be related to that. In my new kernel build the problem failed to reproduce (I've disabled CONFIG_READ_ONLY_THP_FOR_FS, CONFIG_KSM and switched from CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS to CONFIG_TRANSPARENT_HUGEPAGE_MADVISE - sorry for multiple changes).Thanks. Song Liu, could you please take a look?
This is a compound page ... Dennis, are you willing to apply this patch https://lore.kernel.org/linux-mm/20200211001536.1027652-12-jhubbard@nvidia.com/ (local) and retest? It will give us more information about what's going on.