From: Kalle Valo <kalle.valo@xxxxxxxxxxx> There's a race in register_netdevice() so that the udev event is sent before the device is actually ready. This was visible with flimflam, chrome os connection manager: 00:21:35 roska flimflamd[2598]: src/udev.c:add_net_device() 00:21:35 roska flimflamd[2598]: connman_inet_ifname: SIOCGIFNAME(index 4): No such device So the kobject is visible in udev before the device is ready. The issue is reported here: https://bugzilla.kernel.org/show_bug.cgi?id=15606 Fix this by postponing the uevent with device_add_noevent() and calling device_uevent() once the device is really ready. Thanks to Johannes Berg for the original idea. Signed-off-by: Kalle Valo <kalle.valo@xxxxxxxxxxx> --- net/core/dev.c | 3 +++ net/core/net-sysfs.c | 2 +- 2 files changed, 4 insertions(+), 1 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index 856b6ee..80cfa23 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5454,6 +5454,9 @@ int register_netdevice(struct net_device *dev) rollback_registered(dev); dev->reg_state = NETREG_UNREGISTERED; } + + device_uevent(&(dev->dev)); + /* * Prevent userspace races by waiting until the network * device is fully setup before sending notifications. diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 5ceb257..c10b1d5 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -1337,7 +1337,7 @@ int netdev_register_kobject(struct net_device *net) #endif #endif /* CONFIG_SYSFS */ - error = device_add(dev); + error = device_add_noevent(dev); if (error) return error; -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
