tile: enable full SECCOMP support

Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>

3 files changed, 5 insertions, 0 deletions

diff --git a/arch/tile/kernel/intvec_32.S b/arch/tile/kernel/intvec_32.S
index cdbda45a4e4b..fbbe2ea882ea 100644
--- a/arch/tile/kernel/intvec_32.S
+++ b/arch/tile/kernel/intvec_32.S
@@ -1224,6 +1224,7 @@ handle_syscall:
          jal    do_syscall_trace_enter
         }
         FEEDBACK_REENTER(handle_syscall)
+        blz     r0, .Lsyscall_sigreturn_skip
 
         /*
          * We always reload our registers from the stack at this
diff --git a/arch/tile/kernel/intvec_64.S b/arch/tile/kernel/intvec_64.S
index 800b91d3f9dc..58964d209d4d 100644
--- a/arch/tile/kernel/intvec_64.S
+++ b/arch/tile/kernel/intvec_64.S
@@ -1247,6 +1247,7 @@ handle_syscall:
          jal    do_syscall_trace_enter
         }
         FEEDBACK_REENTER(handle_syscall)
+        bltz    r0, .Lsyscall_sigreturn_skip
 
         /*
          * We always reload our registers from the stack at this
diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index f84eed8243da..bdc126faf741 100644
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -262,6 +262,9 @@ int do_syscall_trace_enter(struct pt_regs *regs)
         if (work & _TIF_NOHZ)
                 user_exit();
 
+        if (secure_computing() == -1)
+                return -1;
+
         if (work & _TIF_SYSCALL_TRACE) {
                 if (tracehook_report_syscall_entry(regs))
                         regs->regs[TREG_SYSCALL_NR] = -1;