Re: [sparc64] nft bus error

[Florian Westphal <fw@strlen.de>]

Anatoly Pugachev <matorola@gmail.com> wrote:
> Program received signal SIGBUS, Bus error.
> 0xfff8000100946490 in nftnl_udata_get_u32 (attr=0x10000106e30) at udata.c:127
> 127             return *data;

struct nftnl_udata {
       uint8_t         type;
       uint8_t         len;
       unsigned char   value[];
} __attribute__((__packed__));

Sparc doesn't like doing:

uint32_t nftnl_udata_get_u32(const struct nftnl_udata *attr)
{
        uint32_t *data = (uint32_t *)attr->value;

        return *data;
}

Anatoly, does this help?

diff --git a/src/udata.c b/src/udata.c
--- a/src/udata.c
+++ b/src/udata.c
@@ -122,9 +122,11 @@ void *nftnl_udata_get(const struct nftnl_udata *attr)
 EXPORT_SYMBOL(nftnl_udata_get_u32);
 uint32_t nftnl_udata_get_u32(const struct nftnl_udata *attr)
 {
-       uint32_t *data = (uint32_t *)attr->value;
+       uint32_t data;
 
-       return *data;
+       memcpy(&data, attr->value, sizeof(data));
+
+       return data;
 }
 
 EXPORT_SYMBOL(nftnl_udata_next);