Author: mjg
Date: Fri May 2 21:55:09 2014
New Revision: 265247
URL: http://svnweb.freebsd.org/changeset/base/265247
Log:
Request a non-exiting process in sysctl_kern_proc_{o,}filedesc
This fixes a race with exit1 freeing p_textvp.
Suggested by: kib
MFC after: 1 week
Modified:
head/sys/kern/kern_descrip.c
Modified: head/sys/kern/kern_descrip.c
==============================================================================
--- head/sys/kern/kern_descrip.c Fri May 2 21:54:36 2014
(r265246)
+++ head/sys/kern/kern_descrip.c Fri May 2 21:55:09 2014
(r265247)
@@ -3010,7 +3010,7 @@ 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);
@@ -3503,7 +3503,7 @@ 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);
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