On Wed, Jun 13, 2018 at 6:00 PM, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Wed, Jun 13, 2018 at 05:47:49PM -0300, Rafael Tinoco wrote: >> Results from Linaro’s test farm. >> Regressions detected. >> >> NOTE: >> >> 1) LTP vma03 test (cve-2011-2496) broken on v4.4-137-rc1 because of: >> >> 6ea1dc96a03a mmap: relax file size limit for regular files >> bd2f9ce5bacb mmap: introduce sane default mmap limits >> >> discussion: >> >> https://github.com/linux-test-project/ltp/issues/341 >> >> mainline commit (v4.13-rc7): >> >> 0cc3b0ec23ce Clarify (and fix) MAX_LFS_FILESIZE macros >> >> should be backported to 4.4.138-rc2 and fixes the issue. > > Really? That commit says it fixes c2a9737f45e2 ("vfs,mm: fix a dead > loop in truncate_inode_pages_range()") which is not in 4.4.y at all. > > Did you test this out? Yes, the LTP contains the tests (last comment is the final test for arm32, right before Jan tests i686). Fixing MAX_LFS_FILESIZE fixes the new limit for mmap() brought by those 2 commits (file_mmap_size_max()). offset tested by the LTP test is 0xfffffffe000. file_mmap_size_max gives: 0xFFFFFFFF000 as max value, but only after the mentioned patch. Original intent for this fix was other though. > thanks, > > greg k-h
