Date: Wed, 10 Jul 2019 19:57:49 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r349892 - head/sys/kern Message-ID: <201907101957.x6AJvnXa085022@repo.freebsd.org>
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Author: markj Date: Wed Jul 10 19:57:48 2019 New Revision: 349892 URL: https://svnweb.freebsd.org/changeset/base/349892 Log: Inherit P2_PROTMAX_{ENABLE,DISABLE} across fork(). Thus, when using proccontrol(1) to disable implicit application of PROT_MAX within a process, child processes will inherit this setting. Discussed with: kib MFC with: r349609 Sponsored by: The FreeBSD Foundation Modified: head/sys/kern/kern_fork.c Modified: head/sys/kern/kern_fork.c ============================================================================== --- head/sys/kern/kern_fork.c Wed Jul 10 19:32:50 2019 (r349891) +++ head/sys/kern/kern_fork.c Wed Jul 10 19:57:48 2019 (r349892) @@ -465,7 +465,8 @@ do_fork(struct thread *td, struct fork_req *fr, struct */ p2->p_flag = P_INMEM; p2->p_flag2 = p1->p_flag2 & (P2_ASLR_DISABLE | P2_ASLR_ENABLE | - P2_ASLR_IGNSTART | P2_NOTRACE | P2_NOTRACE_EXEC | P2_TRAPCAP); + P2_ASLR_IGNSTART | P2_NOTRACE | P2_NOTRACE_EXEC | + P2_PROTMAX_ENABLE | P2_PROTMAX_DISABLE | P2_TRAPCAP); p2->p_swtick = ticks; if (p1->p_flag & P_PROFIL) startprofclock(p2);
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