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ip6: Add test for fragmenting special packet

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Reproduces bug #57374 (Found by Hiromasa Ito).
This commit is contained in:
Erik Ekman 2020-06-30 01:17:03 +02:00
parent 5bd7518343
commit e8b0c52806
1 changed files with 39 additions and 1 deletions
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40
test/unit/ip6/test_ip6.c
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@ -287,6 +287,43 @@ START_TEST(test_ip6_lladdr)
}
END_TEST
/* Reproduces bug #57374 */
START_TEST(test_ip6_frag_pbuf_len_assert)
{
ip_addr_t my_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x1);
ip_addr_t peer_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x4);
struct pbuf *payload, *hdr;
err_t err;
int i;
/* Configure and enable local address */
test_netif6.mtu = 1500;
netif_set_up(&test_netif6);
netif_ip6_addr_set(&test_netif6, 0, ip_2_ip6(&my_addr));
netif_ip6_addr_set_state(&test_netif6, 0, IP6_ADDR_VALID);
/* Create packet with lots of small pbufs around mtu limit */
payload = pbuf_alloc(PBUF_RAW, 1400, PBUF_POOL);
fail_unless(payload != NULL);
for (i = 0; i < 16; i++) {
struct pbuf *p = pbuf_alloc(PBUF_RAW, 32, PBUF_RAM);
fail_unless(p != NULL);
pbuf_cat(payload, p);
}
/* Prefix with header like UDP would */
hdr = pbuf_alloc(PBUF_IP, 8, PBUF_RAM);
fail_unless(hdr != NULL);
pbuf_chain(hdr, payload);
/* Send it and don't crash while fragmenting */
err = ip6_output_if_src(hdr, ip_2_ip6(&my_addr), ip_2_ip6(&peer_addr), 15, 0, IP_PROTO_UDP, &test_netif6);
fail_unless(err == ERR_OK);
pbuf_free(hdr);
pbuf_free(payload);
}
END_TEST
/** Create the suite including all tests for this module */
Suite *
ip6_suite(void)
@ -296,7 +333,8 @@ ip6_suite(void)
TESTFUNC(test_ip6_aton_ipv4mapped),
TESTFUNC(test_ip6_ntoa_ipv4mapped),
TESTFUNC(test_ip6_ntoa),
TESTFUNC(test_ip6_lladdr)
TESTFUNC(test_ip6_lladdr),
TESTFUNC(test_ip6_frag_pbuf_len_assert)
};
return create_suite("IPv6", tests, sizeof(tests)/sizeof(testfunc), ip6_setup, ip6_teardown);
}