diff options
author | Evgeny Vereshchagin <evvers@ya.ru> | 2017-01-24 05:11:59 +0300 |
---|---|---|
committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2017-01-23 21:11:59 -0500 |
commit | 419eaa8f8d2025bae98c23bdedb434d6dbb025b8 (patch) | |
tree | 6ff7b02da4b184a698bdb1249d4c58e38cb22000 | |
parent | 8fb35f79f29de494cd850021515220d7e773dd2a (diff) |
sd-network: fix memleak in dhcp6_option_parse_domainname (#5114)
The simplest way to reproduce:
```diff
diff --git a/src/libsystemd-network/test-dhcp6-client.c b/src/libsystemd-network/test-dhcp6-client.c
index bd289fa..7b0a5ef 100644
--- a/src/libsystemd-network/test-dhcp6-client.c
+++ b/src/libsystemd-network/test-dhcp6-client.c
@@ -168,7 +168,7 @@ static uint8_t msg_advertise[198] = {
0x00, 0x17, 0x00, 0x10, 0x20, 0x01, 0x0d, 0xb8,
0xde, 0xad, 0xbe, 0xef, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, 0x00, 0x18, 0x00, 0x0b,
- 0x03, 0x6c, 0x61, 0x62, 0x05, 0x69, 0x6e, 0x74,
+ 0x01, 0x6c, 0x01, 0x62, 0x00, 0x0a, 0x6e, 0x74,
0x72, 0x61, 0x00, 0x00, 0x1f, 0x00, 0x10, 0x20,
0x01, 0x0d, 0xb8, 0xde, 0xad, 0xbe, 0xef, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
@@ -338,9 +338,7 @@ static int test_advertise_option(sd_event *e) {
assert_se(!memcmp(addrs, &msg_advertise[124], r * 16));
r = sd_dhcp6_lease_get_domains(lease, &domains);
- assert_se(r == 1);
- assert_se(!strcmp("lab.intra", domains[0]));
- assert_se(domains[1] == NULL);
+ assert_se(r == -ENOENT);
r = sd_dhcp6_lease_get_ntp_addrs(lease, &addrs);
assert_se(r == 1);
```
Fixes:
```
=================================================================
==15043==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x7f13c8564160 in strdup (/lib64/libasan.so.3+0x5a160)
#1 0x7f13c7caaf69 in strv_extend src/basic/strv.c:552
#2 0x55f775787230 in dhcp6_option_parse_domainname src/libsystemd-network/dhcp6-option.c:399
#3 0x55f775788b96 in dhcp6_lease_set_domains src/libsystemd-network/sd-dhcp6-lease.c:225
#4 0x55f775774b95 in test_advertise_option src/libsystemd-network/test-dhcp6-client.c:287
#5 0x55f77577883e in main src/libsystemd-network/test-dhcp6-client.c:759
#6 0x7f13c7589400 in __libc_start_main (/lib64/libc.so.6+0x20400)
Direct leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x7f13c8564160 in strdup (/lib64/libasan.so.3+0x5a160)
#1 0x7f13c7caaf69 in strv_extend src/basic/strv.c:552
#2 0x55f775787230 in dhcp6_option_parse_domainname src/libsystemd-network/dhcp6-option.c:399
#3 0x55f775788b96 in dhcp6_lease_set_domains src/libsystemd-network/sd-dhcp6-lease.c:225
#4 0x55f775781348 in client_parse_message src/libsystemd-network/sd-dhcp6-client.c:807
#5 0x55f775781ba2 in client_receive_advertise src/libsystemd-network/sd-dhcp6-client.c:895
#6 0x55f775782453 in client_receive_message src/libsystemd-network/sd-dhcp6-client.c:994
#7 0x7f13c7e447f4 in source_dispatch src/libsystemd/sd-event/sd-event.c:2268
#8 0x7f13c7e471b0 in sd_event_dispatch src/libsystemd/sd-event/sd-event.c:2627
#9 0x7f13c7e47ab3 in sd_event_run src/libsystemd/sd-event/sd-event.c:2686
#10 0x7f13c7e47c21 in sd_event_loop src/libsystemd/sd-event/sd-event.c:2706
#11 0x55f77577863c in test_client_solicit src/libsystemd-network/test-dhcp6-client.c:737
#12 0x55f77577884b in main src/libsystemd-network/test-dhcp6-client.c:760
#13 0x7f13c7589400 in __libc_start_main (/lib64/libc.so.6+0x20400)
SUMMARY: AddressSanitizer: 8 byte(s) leaked in 2 allocation(s).
```
-rw-r--r-- | src/libsystemd-network/dhcp6-option.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libsystemd-network/dhcp6-option.c b/src/libsystemd-network/dhcp6-option.c index 5462e03476..f8056dbc4b 100644 --- a/src/libsystemd-network/dhcp6-option.c +++ b/src/libsystemd-network/dhcp6-option.c @@ -339,7 +339,7 @@ int dhcp6_option_parse_ip6addrs(uint8_t *optval, uint16_t optlen, int dhcp6_option_parse_domainname(const uint8_t *optval, uint16_t optlen, char ***str_arr) { size_t pos = 0, idx = 0; - _cleanup_free_ char **names = NULL; + _cleanup_strv_free_ char **names = NULL; int r; assert_return(optlen > 1, -ENODATA); |