diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-04-25 10:53:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-13 13:32:49 +0200 |
| commit | c180afb403eaabbd3a233832abcc7e50e988de8e (patch) | |
| tree | b9f1c22edac5a48c92fb07efd25a09bdd1b478a0 /arch/s390 | |
| parent | 8ba2a0e0643ffcc64f3e9f986e6934ba228d433d (diff) | |
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 <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 708d60e40066..a778ee27518a 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: |