diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-04-25 10:53:44 +0200 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-05-15 09:55:54 +0200 |
| commit | 96ac4631911c6b2334b502385d6e92ff1cc319ee (patch) | |
| tree | 306f4d46563bc85a27377257bd90f92d607520ce /arch | |
| parent | 1671b4e1a3b308a3bdc8b3cc4b0d9f1abbed1c47 (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: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'arch')
| -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 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: |