Re: [GHC] #11776: RTS segfaults when printing profiling information which refers to unloaded objects

#11776: RTS segfaults when printing profiling information which refers to unloaded objects -------------------------------------+------------------------------------- Reporter: afarmer | Owner: afarmer Type: bug | Status: patch Priority: normal | Milestone: 8.0.2 Component: Runtime System | Version: 7.10.3 (Linker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2067 Wiki Page: | Phab:D2068 Phab:D2069 Phab:D2071 -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"36a0b6dc27ae0ee2022afbef5d3cd49dfde9e82b/ghc" 36a0b6d/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="36a0b6dc27ae0ee2022afbef5d3cd49dfde9e82b" Check CCS tree for pointers into shared object during checkUnload Prevent shared objects from being unloaded if cost centre stacks point at the object. This will prevent segfault in #11776, but also prevents objects from ever being unloaded when profiling. Pruning CCS tree will enable that in another diff. Test Plan: make TEST=linker_profiled, examine linker_profiled.run.stderr Reviewers: austin, simonmar, bgamari Reviewed By: simonmar, bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D2069 GHC Trac Issues: #11776 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11776#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler