Author: trasz Date: Tue Sep 3 19:48:23 2019 New Revision: 351783 URL: https://svnweb.freebsd.org/changeset/base/351783
Log: Unbreak Linux binaries linked against new glibc, such as the ones from recent Ubuntu versions. Without it they segfault on startup. Reviewed by: emaste MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D20687 Modified: head/sys/amd64/linux/linux_sysvec.c Modified: head/sys/amd64/linux/linux_sysvec.c ============================================================================== --- head/sys/amd64/linux/linux_sysvec.c Tue Sep 3 19:48:02 2019 (r351782) +++ head/sys/amd64/linux/linux_sysvec.c Tue Sep 3 19:48:23 2019 (r351783) @@ -343,6 +343,12 @@ linux_copyout_strings(struct image_params *imgp) */ vectp -= imgp->args->argc + 1 + imgp->args->envc + 1; + /* + * Starting with 2.24, glibc depends on a 16-byte stack alignment. + * One "long argc" will be prepended later. + */ + vectp = (char **)((((uintptr_t)vectp + 8) & ~0xF) - 8); + /* vectp also becomes our initial stack base. */ stack_base = (register_t *)vectp; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
