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main: Don't init nl80211 if we're terminating

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Don't enter nl80211_appeared if we're already terminating and inside the
1 second timeout.  This fixes a potential crash in device_free() caused
by a netdev_init() and a netdev_exit() happening without netdev_shutdown
in between.  netdev_shutdown has already run if terminating is true.

src/main.c:main() Opening nl80211 interface
src/eap.c:__eap_method_enable()
src/eap-wsc.c:eap_wsc_init()
src/eap-md5.c:eap_md5_init()
src/eap-tls.c:eap_tls_init()
src/eap-ttls.c:eap_ttls_init()
src/eap-mschapv2.c:eap_mschapv2_init()
Terminate
src/main.c:nl80211_appeared() Found nl80211 interface
src/netdev.c:netdev_init() Opening route netlink socket
src/wiphy.c:protocol_features_callback() Found split wiphy dump support
src/wiphy.c:regulatory_info_callback() Regulatory alpha2 is 00
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:parse_supported_bands()
src/wiphy.c:parse_supported_frequencies()
src/wiphy.c:parse_supported_frequencies()
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad1
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad1
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad1
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad1
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad1
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad1
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad0
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad0
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad0
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad0
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad0
src/wiphy.c:wiphy_dump_callback()
src/wiphy.c:wiphy_is_managed() whitelist filtered phy: rad0
Wiphy: 2, Name: rad2
Bands: 2.4 GHz 5 GHz
Ciphers: CCMP TKIP BIP
src/netdev.c:netdev_create_from_genl() Created interface wln2[6]
src/netdev.c:netdev_initial_up_cb() Interface 6 initialized
src/device.c:device_enter_state() Old State: off, new state:
autoconnect
src/scan.c:scan_periodic_start() Starting periodic scan for
ifindex: 6
src/scan.c:scan_notify() Scan notification 33
src/netdev.c:netdev_operstate_dormant_cb() netdev: 6, success: 1
src/scan.c:scan_periodic_done()
src/scan.c:scan_periodic_done() Periodic scan triggered for
ifindex: 6
src/eap.c:__eap_method_disable()
src/eap-wsc.c:eap_wsc_exit()
src/eap-md5.c:eap_md5_exit()
src/eap-tls.c:eap_tls_exit()
src/eap-ttls.c:eap_ttls_exit()
src/eap-mschapv2.c:eap_mschapv2_exit()
src/main.c:nl80211_vanished() Lost nl80211 interface
src/wsc.c:wsc_exit()
src/scan.c:scan_exit()
src/scan.c:scan_context_free() sc: 0x5434ab0
src/netdev.c:netdev_exit() Closing route netlink socket
src/wiphy.c:wiphy_free() Freeing wiphy rad2[2]
device_list isn't empty!
src/device.c:device_free()
(crash here)
This commit is contained in:
Andrew Zaborowski 2017-05-03 19:53:52 +02:00 committed by Denis Kenzior
parent 33f8b1f53d
commit fb4ba71952
1 changed files with 9 additions and 0 deletions
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9
src/main.c
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@ -53,6 +53,7 @@ static const char *nointerfaces;
static const char *phys;
static const char *nophys;
static const char *config_dir;
static bool terminating;
static void main_loop_quit(struct l_timeout *timeout, void *user_data)
{
@ -61,6 +62,11 @@ static void main_loop_quit(struct l_timeout *timeout, void *user_data)
void iwd_shutdown(void)
{
if (terminating)
return;
terminating = true;
dbus_shutdown();
netdev_shutdown();
@ -122,6 +128,9 @@ static void nl80211_appeared(void *user_data)
{
struct l_genl_family *nl80211 = user_data;
if (terminating)
return;
l_debug("Found nl80211 interface");
if (!wiphy_init(nl80211, phys, nophys))