On Tue, Dec 13, 2016 at 12:51 PM, Andriy Gapon <a...@freebsd.org> wrote: > On 13/12/2016 20:05, Bryan Drewery wrote: >> Author: bdrewery >> Date: Tue Dec 13 18:05:14 2016 >> New Revision: 310025 >> URL: https://svnweb.freebsd.org/changeset/base/310025 >> >> Log: >> Take write lock for rtld_bind before modifying obj_list in >> dl_iterate_phdr(). > > What are typical callers of dl_iterate_phdr() ?
libunwind::UnwindCursor<libunwind::LocalAddressSpace, libunwind::Registers_x86_64>::setInfoBasedOnIPRegister(bool) via _pthread_exit. > In what scenarios this bug would typically be hit? > Thank you! We mostly hit this during multi-threaded program teardown. Exiting threads would be in _pthread_exit -> libunwind -> dl_iterate_phdr at the same time as the main thread was performing __cxa_finalize -> _rtld_addr_phdr -> obj_from_addr. Best, Conrad _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
