Author: bapt Date: Tue Aug 2 22:47:06 2016 New Revision: 303685 URL: https://svnweb.freebsd.org/changeset/base/303685
Log: truss: fix uninitialized trussinfo->curthread in add_threads()/enter_syscall trussinfo->curthread must be initialized before calling enter_syscall(), it is used by t->proc->abi->fetch_args(). Without that truss is segfaulting and the attached program also crash. Submitted by: Nikita Kozlov (nik...@gandi.net) Reviewed by: jhb MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D7399 Modified: head/usr.bin/truss/setup.c Modified: head/usr.bin/truss/setup.c ============================================================================== --- head/usr.bin/truss/setup.c Tue Aug 2 22:33:29 2016 (r303684) +++ head/usr.bin/truss/setup.c Tue Aug 2 22:47:06 2016 (r303685) @@ -223,8 +223,10 @@ add_threads(struct trussinfo *info, stru t = new_thread(p, lwps[i]); if (ptrace(PT_LWPINFO, lwps[i], (caddr_t)&pl, sizeof(pl)) == -1) err(1, "ptrace(PT_LWPINFO)"); - if (pl.pl_flags & PL_FLAG_SCE) + if (pl.pl_flags & PL_FLAG_SCE) { + info->curthread = t; enter_syscall(info, t, &pl); + } } free(lwps); } _______________________________________________ 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"
