Red Hat Bugzilla – Bug 236451
kernel oops with the latest iwlwifi/wireless updates
Last modified: 2008-03-28 01:09:17 EDT
Description of problem:
kernel oops when wireless driver is passing traffic
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. assosciate with ap and start a ping, seems to happen after 10 seconds
I'm not hundred percent sure about how, where and what here - since the logs
seems to fill up with plenty debug messages. I'm happy to supply more details.
BUG: warning at include/asm/dma-mapping.h:25/dma_map_single() (Not tainted)
[<f8b1e847>] d_tx+0x7f2/0xd69 [iwlwifi]
[<f8a8f6c6>] __ieee80211_tx+0x20/0xec [mac80211]
[<f8a91588>] ieee80211_master_start_xmit+0x410/0x50e [mac80211]
[<f8a9dc86>] ieee80211_scan_completed+0xdf/0x109 [mac80211]
[<f8a9f0d7>] ieee80211_sta_scan_work+0x63/0x199 [mac80211]
Created attachment 152621 [details]
Snippet from /var/log/messages with BUG
Get this too, 25 seconds after association.
Wireless (even unencrypted) not functioning.
Exact the same situation with 2.6.20-1.3069.fc7
*** Bug 237182 has been marked as a duplicate of this bug. ***
I don't get an oops, but the association does get dropped a few seconds after it
initially succeeds, with plenty of log output like this (repeated many times):
iwlwifi: Error sending RXON: time out after 500ms.
iwlwifi: Error clearing ASSOC_MSK on current configuration (-110).
iwlwifi: No space for Tx
iwlwifi: Error sending RXON: ipw_queue_tx_hcmd failed: -28
iwlwifi: Error clearing ASSOC_MSK on current configuration (-28).
I was running 3094 when this happened. 3056 is still the only kernel that works
correctly for me with iwlwifi.
I have the same symptoms - no Oops but lots of those messages and the connection
fails very soon after the initial success.
Bryan and Adam, I think you should be using bug 236828 instead.
Just confirming the bug still exists with 2.6.20-1.3104.fc7
I'm still seeing the same BUG warning in 2.6.21-1.3116.fc7.
I'm getting the same sort of problem in F7t4.
I did a full install from the F7t4 Live CD on a ThinkPad T60p with the ipw3945
The simple trigger for this is to do a scan while you're associated.
Created attachment 153680 [details]
2.6.21-1.3117.fc7 kernel message log
This is the result under today's 3117 kernel. I know just about zip about
kernel debugging, but now there's a second BUG happening (see near end of log).
I don't want to hijack this bug, so if that's unrelated, point me to the right
component; however, the kernel's the only package changed on this machine
between the last attempt and this one.
FWIW, the rtnl_setlink appears to be a different issue (but still in the
kernel) and should be tracked separately.
some of this issues should be resolved in 0.0.15, see
John, I saw that you updated iwlwifi in cvs to 0.0.15 but 0.0.15 has another
problem: no frames being sent when scanning while acciotated but this is fixed
in the 0.0.16 release ;)
This problem looks to be fixed under the 3122 kernel with the new iwlwifi-0.0.16.
FYI, the newer kernels are at: