diff options
Diffstat (limited to 'arch/s390/net')
| -rw-r--r-- | arch/s390/net/bpf_jit.h | 4 | ||||
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 10 | ||||
| -rw-r--r-- | arch/s390/net/pnet.c | 1 |
3 files changed, 12 insertions, 3 deletions
diff --git a/arch/s390/net/bpf_jit.h b/arch/s390/net/bpf_jit.h index 7822ea92e54af..615e6da713745 100644 --- a/arch/s390/net/bpf_jit.h +++ b/arch/s390/net/bpf_jit.h @@ -11,12 +11,12 @@ #ifndef __ARCH_S390_NET_BPF_JIT_H #define __ARCH_S390_NET_BPF_JIT_H -#ifndef __ASSEMBLY__ +#ifndef __ASSEMBLER__ #include <linux/filter.h> #include <linux/types.h> -#endif /* __ASSEMBLY__ */ +#endif /* __ASSEMBLER__ */ /* * Stackframe layout (packed stack): diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index c7f8313ba4497..0c9a35782c833 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -566,7 +566,15 @@ static void bpf_jit_plt(struct bpf_plt *plt, void *ret, void *target) { memcpy(plt, &bpf_plt, sizeof(*plt)); plt->ret = ret; - plt->target = target; + /* + * (target == NULL) implies that the branch to this PLT entry was + * patched and became a no-op. However, some CPU could have jumped + * to this PLT entry before patching and may be still executing it. + * + * Since the intention in this case is to make the PLT entry a no-op, + * make the target point to the return label instead of NULL. + */ + plt->target = target ?: ret; } /* diff --git a/arch/s390/net/pnet.c b/arch/s390/net/pnet.c index 79211bec0fc84..03089ef479b29 100644 --- a/arch/s390/net/pnet.c +++ b/arch/s390/net/pnet.c @@ -6,6 +6,7 @@ */ #include <linux/device.h> +#include <linux/export.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/types.h> |