On 08/22, Srikar Dronamraju wrote: > > * Vlastimil Babka <vbabka@xxxxxxx> [2018-08-22 12:55:59]: > > > On 08/15/2018 08:49 PM, Yang Shi wrote: > > > We need check if mm or vma has uprobes in the following patch to check > > > if a vma could be unmapped with holding read mmap_sem. Confused... why can't we call uprobe_munmap() under read_lock(mmap_sem) ? OK, it can race with find_active_uprobe() but I do not see anything really wrong, and a false-positive MMF_RECALC_UPROBES is fine. Again, I think we should simply kill uprobe_munmap(), but this needs another discussion. Oleg.
