Date: Fri, 20 Oct 2017 18:58:11 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r324808 - head/sys/amd64/amd64 Message-ID: <201710201858.v9KIwBKB002444@repo.freebsd.org>
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Author: mjg Date: Fri Oct 20 18:58:11 2017 New Revision: 324808 URL: https://svnweb.freebsd.org/changeset/base/324808 Log: amd64: plug missed dt_lock in cpu_fork Modified: head/sys/amd64/amd64/vm_machdep.c Modified: head/sys/amd64/amd64/vm_machdep.c ============================================================================== --- head/sys/amd64/amd64/vm_machdep.c Fri Oct 20 18:40:29 2017 (r324807) +++ head/sys/amd64/amd64/vm_machdep.c Fri Oct 20 18:58:11 2017 (r324808) @@ -244,6 +244,10 @@ cpu_fork(struct thread *td1, struct proc *p2, struct t /* Copy the LDT, if necessary. */ mdp1 = &td1->td_proc->p_md; mdp2 = &p2->p_md; + if (mdp1->md_ldt == NULL) { + mdp2->md_ldt = NULL; + return; + } mtx_lock(&dt_lock); if (mdp1->md_ldt != NULL) { if (flags & RFMEM) {
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