On 25-Jul-19 2:27 PM, Aaron Conole wrote:
hgovindh <[email protected]> writes:Fix unaligned memory access when reading IPv6 header which leads to segmentation fault by changing aligned memory read to unaligned memory read. Bugzilla ID: 279 Fixes: 64d3955de1de ("examples/l3fwd: fix ARM build") Cc: [email protected] Cc: [email protected] Signed-off-by: hgovindh <[email protected]> --- examples/l3fwd/l3fwd_em.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/examples/l3fwd/l3fwd_em.c b/examples/l3fwd/l3fwd_em.c index fa8f82be6..f0c443dae 100644 --- a/examples/l3fwd/l3fwd_em.c +++ b/examples/l3fwd/l3fwd_em.c @@ -285,7 +285,7 @@ em_get_ipv6_dst_port(void *ipv6_hdr, uint16_t portid, void *lookup_struct) * Get part of 5 tuple: dst IP address lower 96 bits * and src IP address higher 32 bits. */ - key.xmm[1] = *(xmm_t *)data1; + key.xmm[1] = _mm_loadu_si128((xmm_t *)data1);Nak. Please use a generic unaligned load, rather than an intel specific one. Otherwise, supported platforms like arm64 will have broken builds. Additionally, which chip and compiler did you use to get this error?
I have reproduced this error on Intel Xeon E5-2699 and GCC 7.4 (Ubuntu 18.04).
/** Get part of 5 tuple: dst port and src port
-- Thanks, Anatoly
