Date: Sat, 15 Jul 2017 06:33:40 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r321004 - stable/11/sys/i386/i386 Message-ID: <201707150633.v6F6XeB0013033@repo.freebsd.org>
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Author: kib Date: Sat Jul 15 06:33:39 2017 New Revision: 321004 URL: https://svnweb.freebsd.org/changeset/base/321004 Log: MFC r320804: Fix handling of one more possible exception on return to usermode. Modified: stable/11/sys/i386/i386/trap.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/i386/i386/trap.c ============================================================================== --- stable/11/sys/i386/i386/trap.c Sat Jul 15 01:49:54 2017 (r321003) +++ stable/11/sys/i386/i386/trap.c Sat Jul 15 06:33:39 2017 (r321004) @@ -550,11 +550,7 @@ user_trctrap_out: vm86_trap((struct vm86frame *)frame); goto out; } - if (type == T_STKFLT) - break; - /* FALL THROUGH */ - case T_SEGNPFLT: /* segment not present fault */ if (curpcb->pcb_flags & PCB_VM86CALL) break; @@ -595,6 +591,9 @@ user_trctrap_out: frame->tf_eip = (int)doreti_iret_fault; goto out; } + if (type == T_STKFLT) + break; + if (frame->tf_eip == (int)doreti_popl_ds) { frame->tf_eip = (int)doreti_popl_ds_fault; goto out;
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