Re: [lwip-devel] lwip_unittests crash

[Gisle Vanem]

Erik Ekman wrote:

> The debug messages above look strange, I didnt think there were any
> loopback or igmp in the tests. How do you compile the unit tests?

By a home-brew GNU-makefile. And igmp_init() is called
from lwip_init() in test\unit\lwip_unittests.c.
Are we speaking of the same tests?

> Do you include any file you made yourself? The tests are meant to run
> by themselves, and they will init any netifs they need.

No, I've not included any private .c-files to the test. Only files
from git. You mean call netif_add()? There are 2 'netif structures'
under test\unit with a total of 5 calls to netif_add():

test\unit\dhcp\test_dhcp.c:
   netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, 
ethernet_input);
   netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, 
ethernet_input);
   netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, 
ethernet_input);
   netif_add(&net_test, &addr, &netmask, &gw, &net_test, testif_init, 
ethernet_input);

test\unit\etharp\test_etharp.c:
 netif_set_default(netif_add(&test_netif, &test_ipaddr, &test_netmask, ...

> Can you get a backtrace from the crash? Exactly which test case is it?

Seems to crash during 'Running suite(s): UDP'.
The call-stack from WinDbg:

lwip_unittests!ip4_route(struct ip4_addr * dest = 0x00a61a44)+0x30
lwip_unittests!ip4_output(struct pbuf * p = 0x00a42c60, struct ip4_addr * src = 0x00a61a40, struct ip4_addr * dest = 
0x00a61a44, unsigned char ttl = 0xff '', unsigned char tos = 0x00 '', unsigned char proto = 0x06 '')+0x41
lwip_unittests!tcp_rst(unsigned long seqno = 0x196e, unsigned long ackno = 4, struct ip4_addr * local_ip = 0x00a61a40, 
struct ip4_addr * remote_ip = 0x00a61a44, unsigned short local_port = 0x101, unsigned short remote_port = 0x100)+0xd6
lwip_unittests!tcp_abandon(struct tcp_pcb * pcb = <Value unavailable error>, 
int reset = 0n1)+0x13b
lwip_unittests!tcp_abort(struct tcp_pcb * pcb = 0x00a61a40)+0xb
lwip_unittests!tcp_remove+0x19
lwip_unittests!tcp_remove_all(void)+0x39
lwip_unittests!tcp_teardown(void)+0x5
lwip_unittests!srunner_run_teardown(struct List * fixture_list = 0x00a58ec8, 
fork_status fork_usage = CK_NOFORK (0n2))+0x56
lwip_unittests!tcase_run_checked_teardown+0xd
lwip_unittests!tcase_run_tfun_nofork(struct SRunner * sr = 0x00a586a0, struct TCase * tc = 0x00a57f80, struct TF * tfun 
= 0x00a58f08, int i = 0n0)+0xb1
lwip_unittests!srunner_iterate_tcase_tfuns(struct SRunner * sr = 0x00a586a0, 
struct TCase * tc = 0x00a57f80)+0xdf
lwip_unittests!srunner_run_tcase+0xd2
lwip_unittests!srunner_iterate_suites(struct SRunner * sr = 0x00a58f08, char * sname = 0x00000000 "", char * tcname = 
0x00000000 "", print_output print_mode = CK_NORMAL (0n2))+0x1c2
lwip_unittests!srunner_run+0x6c
lwip_unittests!srunner_run_all(struct SRunner * sr = 0x00a586a0, print_output 
print_mode = CK_NORMAL (0n2))+0x6f
lwip_unittests!main(void)+0xbb

But if it's UDP test-suite, why is tcp_abort() called?

--
--gv