On 01/17/2018 01:37 PM, Michal Hocko wrote: > On Thu 11-01-18 15:38:37, Anshuman Khandual wrote: >> On 01/09/2018 09:43 PM, Michal Hocko wrote: > [...] >>> Did you manage to catch _who_ is requesting that anonymous mapping? Do >>> you need a help with the debugging patch? >> >> Not yet, will get back on this. > > ping? Hey Michal, Missed this thread, my apologies. This problem is happening only with certain binaries like 'sed', 'tmux', 'hostname', 'pkg-config' etc. As you had mentioned before the map request collision is happening on [10030000, 10040000] and [10030000, 10040000] ranges only which is just a single PAGE_SIZE. You asked previously that who might have requested the anon mapping which is already present in there ? Would not that be the same process itself ? I am bit confused. Would it be helpful to trap all the mmap() requests from any of the binaries and see where we might have created that anon mapping ?
