sf...@users.sourceforge.net: > Since this fput/vma_fput is between up(mmap_sem) and down(mmap_sem), > vma_fput() is not protected, and got vm_file NULL unexpectedly. It > means vma->vm_file is changed (or being changed) by someone else (other > thread in your case) after up_read(&mm->mmap_sem). This is surely a bug > in aufs[34]-mmap.patch. It shoule be done such like this essentially. > get_file(file); > pr = vma->vm_prfile; > ;;; > fput(file); > if (pr) > fput(pr); > > The fix will look a little smarter than above. > I hope I can post the fix in a few weeks.
Here is the fix. I am going to test and release in a few weeks, hopefully. J. R. Okajima
a.patch.bz2
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