Add fix for RHBZ #573210

kernel.spec

@@ -852,6 +852,9 @@ Patch14014: ipv6-make-fragment-identifications-less-predictable.patch
 # RHBZ #699684
 Patch14020: x86-mm-fix-pgd_lock-deadlock.patch
 
+# RHBZ #573210
+Patch14030: utrace-use-task_pid_vnr-in-ptrace_report_clone.patch
+
 %endif
 
 BuildRoot: %{_tmppath}/kernel-%{KVERREL}-root
@@ -1603,6 +1606,9 @@ ApplyPatch ipv6-make-fragment-identifications-less-predictable.patch
 # RHBZ #699684
 ApplyPatch x86-mm-fix-pgd_lock-deadlock.patch
 
+# RHBZ #573210
+ApplyPatch utrace-use-task_pid_vnr-in-ptrace_report_clone.patch
+
 # END OF PATCH APPLICATIONS
 
 %endif
@@ -2189,6 +2195,9 @@ fi
 # and build.
 
 %changelog
+* Mon Aug 29 2011 Josh Boyer <jwboyer@redhat.com>
+- Add fix from Oleg Nesterov for RHBZ #573210
+
 * Wed Aug 24 2011 Chuck Ebbert <cebbert@redhat.com>
 - Add fix for RHBZ #699684: System freeze with 2.6.35.12-*.fc14.i686.PAE
 

utrace-use-task_pid_vnr-in-ptrace_report_clone.patch

@@ -0,0 +1,24 @@
+https://bugzilla.redhat.com/show_bug.cgi?id=573210
+
+ptrace_report_clone() uses child->pid, this is obviously wrong unless
+the tracer is from the global namespace. Change it to use task_pid_vnr().
+
+This is still not right, we should use the tracer's namespace, not
+parent's. But this matches upstream, and at least this works if they
+are from the same namespace.
+
+Reported-by: Robin Green <greenrd@greenrd.org>
+Signed-off-by: Oleg Nesterov <oleg@redhat.com>
+
+--- a/kernel/ptrace-utrace.c
++++ b/kernel/ptrace-utrace.c
+@@ -403,7 +403,7 @@ static u32 ptrace_report_clone(u32 actio
+ 		return UTRACE_RESUME;
+ 
+ 	set_stop_code(ctx, event);
+-	ctx->eventmsg = child->pid;
++	ctx->eventmsg = task_pid_vnr(child);
+ 	/*
+ 	 * We shouldn't stop now, inside the do_fork() path.
+ 	 * We will stop later, before return to user-mode.
+