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Description of problem: when a Ralink 2561 based WiFi PCI card (Edimax) is UP, then a lot of "NOHZ: local_softirq_pending 08" messages are written to console 00:0f.0 Network controller: RaLink RT2561/RT61 802.11g PCI or with lspci -n 00:0f.0 0280: 1814:0301 Version-Release number of selected component (if applicable): kernel-2.6.20-1.3079.fc7 How reproducible: always Steps to Reproduce: 1. attach to a wireless network, so the link is up, IP is assigned
behaviour still the same in kernel-2.6.20-1.3094.fc7
Definitely need someone more familiar w/ the driver to take a glance at this...
Could you enable debugging output of the rt61pci driver (load rt61pci with the debug=1 option) and attach /var/log/messsages to this bugreport?
Same problem here with the rt2500pci driver (PC-card): wlan0: Initial auth_alg=0 wlan0: authenticate with AP 00:14:bf:a5:05:78 wlan0: RX authentication from 00:14:bf:a5:05:78 (alg=0 transaction=2 status=0) wlan0: authenticated wlan0: associate with AP 00:14:bf:a5:05:78 wlan0: RX AssocResp from 00:14:bf:a5:05:78 (capab=0x411 status=0 aid=1) wlan0: associated NOHZ: local_softirq_pending 08 .. .. Trying to load driver with debug=1: [root@tritanium log]# modprobe rt2500pci debug=1 FATAL: Error inserting rt2500pci (/lib/modules/2.6.21-1.3116.fc7/kernel/drivers/net/wireless/mac80211/rt2x00/rt2500pci.ko): Unknown symbol in module, or unknown parameter (see dmesg) [root@tritanium log]# dmesg | tail -1 rt2500pci: Unknown parameter `debug' [root@tritanium log]#
ok, so debug isn't enabled in the fedora default config. Could you post the entire output of dmesg then, perhaps it still contains something useful.
Created attachment 153853 [details] laptop dmesg
System profile: http://smolt.fedoraproject.org/show?UUID=7249536a-feda-40cf-8407-917fbc02aa9a [root@tritanium ~]# iwlist wlan0 scan Warning: Driver for device wlan0 has been compiled with version 22 of Wireless Extension, while this program supports up to version 20. Some things may be broken... wlan0 Scan completed : Cell 01 - Address: 00:14:BF:A5:05:78 ESSID:"brmstrt" Mode:Master Frequency:2.462 GHz Signal level=-175 dBm Noise level=-176 dBm Encryption key:on Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s 24 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 9 Mb/s 12 Mb/s; 48 Mb/s Extra:tsf=0000000c1dcf297d [root@tritanium ~]# See also https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=238537
I am rebuilding the Fedora kernel with debugging enabled, then I will upload it at http://fedora.danny.cz/kernel
kernel-2.6.21-1.3194.fc7 looks good