From 9d37c405ed7e4bb10798c37ef4e642b682425c4e Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Wed, 22 Jan 2014 14:40:02 +0000 Subject: MIPS: kernel: scalls: Skip the syscall if denied by the seccomp filter Signed-off-by: Markos Chandras Reviewed-by: Paul Burton Reviewed-by: James Hogan Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6399/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/scall32-o32.S | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/mips/kernel/scall32-o32.S') diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index a5b14f48e1af..1789a801802e 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -120,6 +120,8 @@ syscall_trace_entry: move a0, sp jal syscall_trace_enter + bltz v0, 2f # seccomp failed? Skip syscall + move t0, s0 RESTORE_STATIC lw a0, PT_R4(sp) # Restore argument registers @@ -138,7 +140,7 @@ syscall_trace_entry: sw t1, PT_R0(sp) # save it for syscall restarting 1: sw v0, PT_R2(sp) # result - j syscall_exit +2: j syscall_exit /* ------------------------------------------------------------------------ */ -- cgit