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From: Mateusz Guzik <mjg@FreeBSD.org>
Date: Sun, 6 Jul 2014 22:49:07 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r268336 - stable/10/sys/kern
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Author: mjg
Date: Sun Jul  6 22:49:07 2014
New Revision: 268336
URL: http://svnweb.freebsd.org/changeset/base/268336

Log:
  MFC r265247:
  Request a non-exiting process in sysctl_kern_proc_{o,}filedesc
  
  This fixes a race with exit1 freeing p_textvp.

Modified:
  stable/10/sys/kern/kern_descrip.c

Modified: stable/10/sys/kern/kern_descrip.c
==============================================================================
--- stable/10/sys/kern/kern_descrip.c	Sun Jul  6 22:47:18 2014	(r268335)
+++ stable/10/sys/kern/kern_descrip.c	Sun Jul  6 22:49:07 2014	(r268336)
@@ -3043,7 +3043,7 @@ sysctl_kern_proc_ofiledesc(SYSCTL_HANDLE
 	struct tty *tp;
 
 	name = (int *)arg1;
-	error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
+	error = pget((pid_t)name[0], PGET_CANDEBUG | PGET_NOTWEXIT, &p);
 	if (error != 0)
 		return (error);
 	fdp = fdhold(p);
@@ -3540,7 +3540,7 @@ sysctl_kern_proc_filedesc(SYSCTL_HANDLER
 	name = (int *)arg1;
 
 	sbuf_new_for_sysctl(&sb, NULL, FILEDESC_SBUF_SIZE, req);
-	error = pget((pid_t)name[0], PGET_CANDEBUG, &p);
+	error = pget((pid_t)name[0], PGET_CANDEBUG | PGET_NOTWEXIT, &p);
 	if (error != 0) {
 		sbuf_delete(&sb);
 		return (error);