On 05/20/2014 11:01 AM, Cyrill Gorcunov wrote: >> >> This patch should fix this issue, at least. If there's still a way to >> get a native vdso that doesn't say "[vdso]", please let me know/ > > Yes, having a native procfs way to detect vdso is much preferred! > Is there any path by which we can end up with [vdso] without a leading slash in /proc/self/maps? Otherwise, why is that not "native"? >>> The situation get worse when task was dumped on one kernel and >>> then restored on another kernel where vdso content is different >>> from one save in image -- is such case as I mentioned we need >>> that named vdso proxy which redirect calls to vdso of the system >>> where task is restoring. And when such "restored" task get checkpointed >>> second time we don't dump new living vdso but save only old vdso >>> proxy on disk (detecting it is a different story, in short we >>> inject a unique mark into elf header). >> >> Yuck. But I don't know whether the kernel can help much here. > > Some prctl which would tell kernel to put vdso at specifed address. > We can live without it for now so not a big deal (yet ;) mremap() will do this for you. -hpa -- 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>