Naoya, Hugh, I am seeing lots of crashes with the new copy_hugetlb_page_range() code added by 4a705fef986231a3e7a6b1a6d3c37025f021f49f for some set of programs.
Specifically, I am running some test programs which use huge pages for malloc (through libhugetlbfs with HUGETLB_MORECORE=yes and HUGETLB_NO_PREFAULT= set) that also do fork() a lot. The crashes are very diverse: assertion failures in malloc() or the python GC code, some SIGSEGV as well. I started observing these crashes with 3.4.98 and 3.14.12 which just got a backport of the patch above (as 2bcdd4933ff4dc46445dcae93cb37c648283b782 in the stable branch). The 3.4 and 3.14 patches are identical to the upstream commit so that's not a patch backport issue. If I revert only 2bcdd4933ff4dc46445dcae93cb37c648283b782 in my 3.4 tree, the crashes disappear right away and everything is stable. -- Guillaume Morin <guilla...@morinfr.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
