From 96ac4631911c6b2334b502385d6e92ff1cc319ee Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 25 Apr 2014 10:53:44 +0200 Subject: s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSH commit 6e0de817594c61f3b392a9245deeb09609ec707d upstream. The A register needs to be initialized to zero in the prolog if the first instruction of the BPF program is BPF_S_LDX_B_MSH to prevent leaking the content of %r5 to user space. Signed-off-by: Martin Schwidefsky Signed-off-by: Jiri Slaby --- arch/s390/net/bpf_jit_comp.c | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 96a4b150f958..906fba63b66d 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -276,7 +276,6 @@ static void bpf_jit_noleaks(struct bpf_jit *jit, struct sock_filter *filter) case BPF_S_LD_W_IND: case BPF_S_LD_H_IND: case BPF_S_LD_B_IND: - case BPF_S_LDX_B_MSH: case BPF_S_LD_IMM: case BPF_S_LD_MEM: case BPF_S_MISC_TXA: -- cgit v1.2.3