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network: unset Network::manager when loading .network file fails

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Otherwise, LIST_REMOVE() in network_free() fails.

This fixes the following assertion:
```
systemd-networkd[2595]: Bus bus-api-network: changing state UNSET → OPENING
systemd-networkd[2595]: Bus bus-api-network: changing state OPENING → AUTHENTICATING
systemd-networkd[2595]: timestamp of '/etc/systemd/network' changed
systemd-networkd[2595]: /etc/systemd/network/10-hoge.network:1: Invalid section header '[Network]Address=192.168.0.1'
systemd-networkd[2595]: /etc/systemd/network/10-hoge.network:1: Failed to parse file: Bad message
systemd-networkd[2595]: Assertion '*_head == _item' failed at ../../home/watanabe/git/systemd/src/network/networkd-network.c:378, function network_free(). Aborting.
valgrind[2595]: ==2595==
valgrind[2595]: ==2595== Process terminating with default action of signal 6 (SIGABRT): dumping core
valgrind[2595]: ==2595==    at 0x4BCA53F: raise (in /usr/lib64/libc-2.28.so)
valgrind[2595]: ==2595==    by 0x4BB4894: abort (in /usr/lib64/libc-2.28.so)
valgrind[2595]: ==2595==    by 0x4955F09: log_assert_failed_realm (log.c:795)
valgrind[2595]: ==2595==    by 0x417101: network_free (networkd-network.c:378)
valgrind[2595]: ==2595==    by 0x415E99: network_freep (networkd-network.h:282)
valgrind[2595]: ==2595==    by 0x416AB2: network_load_one (networkd-network.c:101)
valgrind[2595]: ==2595==    by 0x416C39: network_load (networkd-network.c:293)
valgrind[2595]: ==2595==    by 0x414031: manager_load_config (networkd-manager.c:1502)
valgrind[2595]: ==2595==    by 0x40B258: run (networkd.c:82)
valgrind[2595]: ==2595==    by 0x40B74A: main (networkd.c:117)
valgrind[2595]: ==2595==
valgrind[2595]: ==2595== HEAP SUMMARY:
valgrind[2595]: ==2595==     in use at exit: 32,621 bytes in 201 blocks
valgrind[2595]: ==2595==   total heap usage: 746 allocs, 545 frees, 241,027 bytes allocated
valgrind[2595]: ==2595==
valgrind[2595]: ==2595== LEAK SUMMARY:
valgrind[2595]: ==2595==    definitely lost: 0 bytes in 0 blocks
valgrind[2595]: ==2595==    indirectly lost: 0 bytes in 0 blocks
valgrind[2595]: ==2595==      possibly lost: 0 bytes in 0 blocks
valgrind[2595]: ==2595==    still reachable: 32,621 bytes in 201 blocks
valgrind[2595]: ==2595==         suppressed: 0 bytes in 0 blocks
valgrind[2595]: ==2595== Reachable blocks (those to which a pointer was found) are not shown.
valgrind[2595]: ==2595== To see them, rerun with: --leak-check=full --show-leak-kinds=all
valgrind[2595]: ==2595==
valgrind[2595]: ==2595== For counts of detected and suppressed errors, rerun with: -v
valgrind[2595]: ==2595== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
systemd-coredump[2600]: Process 2595 (memcheck-amd64-) of user 192 dumped core.
```
This commit is contained in:
Yu Watanabe 2019-01-18 12:55:15 +09:00 committed by Lennart Poettering
parent d0d7e10241
commit 838b2f7a30
1 changed files with 27 additions and 23 deletions
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50
src/network/networkd-network.c
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@ -98,12 +98,13 @@ void network_apply_anonymize_if_set(Network *network) {
}
int network_load_one(Manager *manager, const char *filename) {
_cleanup_free_ char *fname = NULL, *name = NULL;
_cleanup_(network_freep) Network *network = NULL;
_cleanup_fclose_ FILE *file = NULL;
char *d;
const char *dropin_dirname;
Route *route;
Address *address;
Route *route;
char *d;
int r;
assert(manager);
@ -122,12 +123,30 @@ int network_load_one(Manager *manager, const char *filename) {
return 0;
}
fname = strdup(filename);
if (!fname)
return log_oom();
name = strdup(basename(filename));
if (!name)
return log_oom();
d = strrchr(name, '.');
if (!d)
return -EINVAL;
*d = '\0';
dropin_dirname = strjoina(name, ".network.d");
network = new(Network, 1);
if (!network)
return log_oom();
*network = (Network) {
.manager = manager,
.filename = TAKE_PTR(fname),
.name = TAKE_PTR(name),
.required_for_online = true,
.dhcp = ADDRESS_FAMILY_NO,
@ -190,22 +209,6 @@ int network_load_one(Manager *manager, const char *filename) {
.ipv6_accept_ra_route_table = RT_TABLE_MAIN,
};
network->filename = strdup(filename);
if (!network->filename)
return log_oom();
network->name = strdup(basename(filename));
if (!network->name)
return log_oom();
d = strrchr(network->name, '.');
if (!d)
return -EINVAL;
*d = '\0';
dropin_dirname = strjoina(network->name, ".network.d");
r = config_parse_many(filename, network_dirs, dropin_dirname,
"Match\0"
"Link\0"
@ -228,8 +231,11 @@ int network_load_one(Manager *manager, const char *filename) {
"CAN\0",
config_item_perf_lookup, network_network_gperf_lookup,
CONFIG_PARSE_WARN, network);
if (r < 0)
if (r < 0) {
/* Unset manager here. Otherwise, LIST_REMOVE() in network_free() fails. */
network->manager = NULL;
return r;
}
network_apply_anonymize_if_set(network);
@ -253,21 +259,19 @@ int network_load_one(Manager *manager, const char *filename) {
if (r < 0)
return r;
LIST_FOREACH(routes, route, network->static_routes) {
LIST_FOREACH(routes, route, network->static_routes)
if (!route->family) {
log_warning("Route section without Gateway field configured in %s. "
"Ignoring", filename);
return 0;
}
}
LIST_FOREACH(addresses, address, network->static_addresses) {
LIST_FOREACH(addresses, address, network->static_addresses)
if (!address->family) {
log_warning("Address section without Address field configured in %s. "
"Ignoring", filename);
return 0;
}
}
network = NULL;