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path: root/arch/s390/net/bpf_jit_comp.c
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Diffstat (limited to 'arch/s390/net/bpf_jit_comp.c')
-rw-r--r--arch/s390/net/bpf_jit_comp.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index 708d60e40066..9c36dc398f90 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -737,10 +737,10 @@ call_fn: /* lg %r1,<d(function)>(%r13) */
/* icm %r5,3,<d(type)>(%r1) */
EMIT4_DISP(0xbf531000, offsetof(struct net_device, type));
break;
- case BPF_S_ANC_RXHASH: /* A = skb->rxhash */
- BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, rxhash) != 4);
- /* l %r5,<d(rxhash)>(%r2) */
- EMIT4_DISP(0x58502000, offsetof(struct sk_buff, rxhash));
+ case BPF_S_ANC_RXHASH: /* A = skb->hash */
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, hash) != 4);
+ /* l %r5,<d(hash)>(%r2) */
+ EMIT4_DISP(0x58502000, offsetof(struct sk_buff, hash));
break;
case BPF_S_ANC_VLAN_TAG:
case BPF_S_ANC_VLAN_TAG_PRESENT:
@@ -877,6 +877,7 @@ void bpf_jit_compile(struct sk_filter *fp)
if (jit.start) {
set_memory_ro((unsigned long)header, header->pages);
fp->bpf_func = (void *) jit.start;
+ fp->jited = 1;
}
out:
kfree(addrs);
@@ -887,10 +888,12 @@ void bpf_jit_free(struct sk_filter *fp)
unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK;
struct bpf_binary_header *header = (void *)addr;
- if (fp->bpf_func == sk_run_filter)
+ if (!fp->jited)
goto free_filter;
+
set_memory_rw(addr, header->pages);
module_free(NULL, header);
+
free_filter:
kfree(fp);
}