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I confirmed the issue is not repro= ducible > > before your patchset[1] but after the series[2]. > >=20 > > I tried to bisect, but on a commit[3] middle of mm-unstable tree which = this > > patch is applied, I get below error while booting. Do you have an idea= ? >=20 > I further bisected for the boot failure. The first bad commit was a8e0f2= e12936 > ("mmap: change do_mas_munmap and do_mas_aligned_munmap() to use vma > iterator")[1]. The stacktrace on the commit is as below. >=20 ... Thanks for your work on this. I have found the issue and will send out a fix shortly. I am not handling the invalidated state correctly in the write path.