On Dez 15 2016, Minchan Kim <minchan@xxxxxxxxxx> wrote: > You mean program itself access the address(ie, 0xffffb7400000) is hang > while access the address from the debugger is OK? Yes. > Can you reproduce it easily? 100% > Did you test it in real machine or qemu on x86? Both real and kvm. > Could you show me how I can reproduce it? Just run make check. > I want to test it in x86 machine, first of all. > Unfortunately, I don't have any aarch64 platform now so maybe I have to > run it on qemu on x86 until I can set up aarch64 platform if it is reproducible > on real machine only. > >> >> The kernel has been configured with transparent hugepages. >> >> CONFIG_TRANSPARENT_HUGEPAGE=y >> CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y >> # CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set >> CONFIG_TRANSPARENT_HUGE_PAGECACHE=y > > What's the exact kernel version? Anything >= your commit. > I don't think it's HUGE_PAGECACHE problem but to narrow down the scope, > could you test it without CONFIG_TRANSPARENT_HUGE_PAGECACHE? That cannot be deselected. Andreas. -- Andreas Schwab, SUSE Labs, schwab@xxxxxxx GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different." -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>