Every now and then (maybe every 5-10 hours of use?) my laptop crashes. See attached. This is probably related to bug 683571.
Created attachment 485788 [details] register dump from crash
Created attachment 485789 [details] backtrace from crash
forgot to mention, this is kernel-2.6..38-0.rc8.git0.1.fc15
Does disable_hw_scan=1 module option helps?
I know very little about kernel stuff. Where do I put that option?
Below should do the job (as root): $ echo "options iwl3945 disable_hw_scan=1" >> /etc/modprobe.d/iwlwifi.conf $ rmmod iwl3945 iwlcore $ modprobe iwl3945 You can check if option have correct value using $ cat /sys/module/iwl3945/parameters/disable_hw_scan
Does option stops microcode error from bug 683571 ?
It definitely stops the error from bug 683571. I haven't gotten another crash yet either, so it probably fixes/works around that too. (I am still seeing lots of: [36356.287070 iwl3945 0000:03:00.0: Failed to get channel info for channel 165 [0] for various channel numbers, which also seem to be tied to NM scans. Not sure if that indicates a driver bug, an NM bug, or just overzealous logging.)
"Failed to get channel info" is know software scanning problem, already fixed upstream by: http://git.kernel.org/linus/f844a709a7d8f8be61a571afc31dfaca9e779621 I need to post it to stable ... I think you are not able to patch kernel. So to test driver with patch, you can eventually install beading edge compat-wireless. For F-14 and F-13 released kernels, I have compat-wireless-next binary packages at: http://people.redhat.com/sgruszka/compact_wireless.html On other kernels need to build from source: http://wireless.kernel.org/en/users/Download http://wireless.kernel.org/download/compat-wireless-2.6/
I'm seeing the very same problem - and same oops on my T61. Some updated package must be behind this. I've tried even very old kernel 2.6.35 I keep on my this - and it gives now same error. I tried 'disable_hw_scan' hint - however I had to compile linus vanilla kernel 2.6.39-pre-rc kernel to get my wifi usable. So for now - the only way to have usable wifi is to use quite unstable 2.6.39 kernel.
In fact - I've run simple valgrind - and the reason seems to quite obvious and IMHO easy to fix - though as I don't have devel tree for compilation - leave for developers: So here is important part of valgrind log for this BZ: Invalid read of size 4 at 0x80389CB: DrawableGone (glxext.c:131) by 0x44C564: FreeClientResources (resource.c:854) by 0x42DFFD: CloseDownClient (dispatch.c:3461) by 0x45EA14: EstablishNewConnections (connection.c:838) by 0x432DA1: ProcessWorkQueue (dixutils.c:527) by 0x45B5D1: WaitForSomething (WaitFor.c:173) by 0x42E8D9: Dispatch (dispatch.c:367) by 0x422DC9: main (main.c:287) Address 0xcbac2d4 is 4 bytes inside a block of size 96 free'd at 0x4C2756E: free (vg_replace_malloc.c:366) by 0x910E1C5: fbDestroyPixmap (fbpixmap.c:104) by 0x8AA287E: intel_uxa_destroy_pixmap (intel_uxa.c:1092) by 0x4DD9C0: damageDestroyPixmap (damage.c:1696) by 0x79CB094: XvDestroyPixmap (xvmain.c:389) by 0x4B8738: ShmDestroyPixmap (shm.c:276) by 0x4A6250: compCheckRedirect (compwindow.c:168) by 0x4A64D0: compUnrealizeWindow (compwindow.c:274) by 0x452527: UnrealizeTree (window.c:2807) by 0x455356: UnmapWindow (window.c:2865) by 0x45540C: DeleteWindow (window.c:909) by 0x44BEB7: FreeResource (resource.c:596) Invalid read of size 8 at 0x80389C4: DrawableGone (glxext.c:131) by 0x44C564: FreeClientResources (resource.c:854) by 0x44C617: FreeAllResources (resource.c:871) by 0x422DFB: main (main.c:301) Address 0xf6d6438 is 40 bytes inside a block of size 208 free'd at 0x4C2756E: free (vg_replace_malloc.c:366) by 0x8038A80: DrawableGone (glxext.c:171) by 0x44C564: FreeClientResources (resource.c:854) by 0x42DFFD: CloseDownClient (dispatch.c:3461) by 0x45EA14: EstablishNewConnections (connection.c:838) by 0x432DA1: ProcessWorkQueue (dixutils.c:527) by 0x45B5D1: WaitForSomething (WaitFor.c:173) by 0x42E8D9: Dispatch (dispatch.c:367) by 0x422DC9: main (main.c:287) Invalid read of size 4 at 0x80389C8: DrawableGone (glxext.c:131) by 0x44C564: FreeClientResources (resource.c:854) by 0x44C617: FreeAllResources (resource.c:871) by 0x422DFB: main (main.c:301) Address 0xf6d6440 is 48 bytes inside a block of size 208 free'd at 0x4C2756E: free (vg_replace_malloc.c:366) by 0x8038A80: DrawableGone (glxext.c:171) by 0x44C564: FreeClientResources (resource.c:854) by 0x42DFFD: CloseDownClient (dispatch.c:3461) by 0x45EA14: EstablishNewConnections (connection.c:838) by 0x432DA1: ProcessWorkQueue (dixutils.c:527) by 0x45B5D1: WaitForSomething (WaitFor.c:173) by 0x42E8D9: Dispatch (dispatch.c:367) by 0x422DC9: main (main.c:287) Process terminating with default action of signal 11 (SIGSEGV): dumping core General Protection Fault at 0x80389CB: DrawableGone (glxext.c:131) by 0x44C564: FreeClientResources (resource.c:854) by 0x44C617: FreeAllResources (resource.c:871) by 0x422DFB: main (main.c:301) Looks like code tries to destroy already freed objects multiple times and several fixes seems obvious: in glxext.c line 131: if (glxPriv->drawId != glxPriv->pDraw->id) { Needs to check for 'pDraw' != NULL before dereferencing. Doing 'free(this)' in dix/resource.c:855 on object release as well as in DrawableGone():171 glxPriv->destroy(glxPriv); Cannot really work well - one of them should be probably removed. (assuming the one in resource.c - though it looks tricky) As I do not have insight knowledge - leaving to developers...
ooops - sorry - wrong bugzilla - should be in Bug 674464
(In reply to comment #10) > I'm seeing the very same problem - and same oops on my T61. > > Some updated package must be behind this. I've tried even very old kernel > 2.6.35 I keep on my this - and it gives now same error. NetworkManager https://bugzilla.gnome.org/show_bug.cgi?id=644551 > I tried 'disable_hw_scan' hint - however I had to compile linus vanilla > kernel 2.6.39-pre-rc kernel to get my wifi usable. So both disable_hw_scan and update to .39 is needed to make problem gone, right? Did you try to apply f844a709a7d8f8be61a571afc31dfaca9e779621 on 2.6.38? I wonder if that fix is enough or we need some more patches from 2.6.39.
*** Bug 691585 has been marked as a duplicate of this bug. ***
*** Bug 698815 has been marked as a duplicate of this bug. ***
kernel-2.6.38.3-18.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.38.3-18.fc15
Created attachment 494317 [details] Screenshot from the crash I've installed these new kernel packages (https://admin.fedoraproject.org/updates/kernel-2.6.38.3-18.fc15) but I still can't get a wlan connection via NetworkManager. [chris@linuxbox ~]$ uname -r 2.6.38.3-18.fc15.x86_64 [chris@linuxbox ~]$ cat /var/log/messages |grep iwl |tail -n 20 Apr 22 22:30:59 linuxbox kernel: [ 958.671084] iwl3945 0000:0b:00.0: Failed to get channel info for channel 140 [0] Apr 22 22:31:59 linuxbox kernel: [ 1018.669055] iwl3945 0000:0b:00.0: Failed to get channel info for channel 140 [0] Apr 22 22:32:59 linuxbox kernel: [ 1078.676182] iwl3945 0000:0b:00.0: Failed to get channel info for channel 140 [0] Apr 22 22:33:59 linuxbox kernel: [ 1138.680049] iwl3945 0000:0b:00.0: Failed to get channel info for channel 140 [0] Apr 22 22:35:02 linuxbox kernel: [ 22.078580] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:ds Apr 22 22:35:02 linuxbox kernel: [ 22.078584] iwl3945: Copyright(c) 2003-2010 Intel Corporation Apr 22 22:35:02 linuxbox kernel: [ 22.078741] iwl3945 0000:0b:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 Apr 22 22:35:02 linuxbox kernel: [ 22.132250] iwl3945 0000:0b:00.0: Tunable channels: 13 802.11bg, 23 802.11a channels Apr 22 22:35:02 linuxbox kernel: [ 22.132255] iwl3945 0000:0b:00.0: Detected Intel Wireless WiFi Link 3945ABG Apr 22 22:35:05 linuxbox NetworkManager[882]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwl3945' ifindex: 3) Apr 22 22:35:05 linuxbox kernel: [ 29.883851] iwl3945 0000:0b:00.0: loaded firmware version 15.32.2.9 Apr 22 22:35:05 linuxbox kernel: [ 29.951270] iwl3945 0000:0b:00.0: Error setting Tx power (-5). Apr 22 22:52:36 linuxbox kernel: [ 22.353413] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:ds Apr 22 22:52:36 linuxbox kernel: [ 22.353417] iwl3945: Copyright(c) 2003-2010 Intel Corporation Apr 22 22:52:36 linuxbox kernel: [ 22.353568] iwl3945 0000:0b:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 Apr 22 22:52:36 linuxbox kernel: [ 22.407136] iwl3945 0000:0b:00.0: Tunable channels: 13 802.11bg, 23 802.11a channels Apr 22 22:52:36 linuxbox kernel: [ 22.407141] iwl3945 0000:0b:00.0: Detected Intel Wireless WiFi Link 3945ABG Apr 22 22:52:40 linuxbox NetworkManager[928]: <info> (wlan0): new 802.11 WiFi device (driver: 'iwl3945' ifindex: 4) Apr 22 22:52:40 linuxbox kernel: [ 30.472493] iwl3945 0000:0b:00.0: loaded firmware version 15.32.2.9 Apr 22 22:52:40 linuxbox kernel: [ 30.539113] iwl3945 0000:0b:00.0: Error setting Tx power (-5). And I get a kernel crash after running these commands (Screenshot from the crash attached). ifconfig wlan0 down iwconfig wlan0 channel 11 iwconfig wlan0 mode ad-hoc iwconfig wlan0 essid some_network iwconfig wlan0 key 01234567890123456789012345 ifconfig wlan0 up ifconfig wlan0 192.168.0.88 route add -net default gw 192.168.0.1 wlan0
Package kernel-2.6.38.3-18.fc15: * should fix your issue, * was pushed to the Fedora 15 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-2.6.38.3-18.fc15' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/kernel-2.6.38.3-18.fc15 then log in and leave karma (feedback).
Although I'm not the originator of this bug report, I'm getting a similar iwl3945 error, more similar to what is being reported in https://bugzilla.redhat.com/show_bug.cgi?id=683571. After updating to kernel kernel-2.6.38.3-18.fc15, I still get the following, for whatever it's worth. I've trimmed the left side to help it fit here. Should I report this in that other report as well? [ 28.872724] iwl3945 0000:0c:00.0: Microcode SW error detected. Restarting 0x82000008. [ 28.876310] iwl3945 0000:0c:00.0: Loaded firmware version: 15.32.2.9 [ 28.879943] iwl3945 0000:0c:00.0: Start IWL Error Log Dump: [ 28.883524] iwl3945 0000:0c:00.0: Status: 0x0002A2E4, count: 1 [ 28.887099] iwl3945 0000:0c:00.0: Desc Time asrtPC blink2 ilink1 nmiPC Line [ 28.890932] iwl3945 0000:0c:00.0: SYSASSERT (0x5) 0000000552 0x008B6 0x13756 0x00320 0x00000 764 [ 28.890934] [ 28.898305] iwl3945 0000:0c:00.0: Start IWL Event Log Dump: display last 20 count [ 28.902062] iwl3945 0000:0c:00.0: 0001364725 0x00000001 0462 [ 28.903011] iwl3945 0000:0c:00.0: 0001364863 0x04170010 0401 [ 28.903011] iwl3945 0000:0c:00.0: 0001364920 0x00000175 1005 [ 28.903011] iwl3945 0000:0c:00.0: 0001364921 0x00000000 1001 [ 28.903011] iwl3945 0000:0c:00.0: 0001364922 0x00000000 1002 [ 28.903011] iwl3945 0000:0c:00.0: 0000000012 0x000001b8 1005 [ 28.903011] iwl3945 0000:0c:00.0: 0000000040 0x000000d1 0103 [ 28.903011] iwl3945 0000:0c:00.0: 0000000125 0x04180018 0401 [ 28.903011] iwl3945 0000:0c:00.0: 0000000214 0x04190097 0401 [ 28.903011] iwl3945 0000:0c:00.0: 0000000217 0x00000001 0451 [ 28.903011] iwl3945 0000:0c:00.0: 0000000237 0x00000000 0451 [ 28.903011] iwl3945 0000:0c:00.0: 0000000314 0x041a0047 0401 [ 28.903011] iwl3945 0000:0c:00.0: 0000000390 0x041b0047 0401 [ 28.903011] iwl3945 0000:0c:00.0: 0000000513 0x441c0080 0401 [ 28.903011] iwl3945 0000:0c:00.0: 0000000526 0x0000000d 0452 [ 28.903011] iwl3945 0000:0c:00.0: 0000000531 0x001f3b6e 0450 [ 28.903011] iwl3945 0000:0c:00.0: 0000000537 0x001f3b6e 0450 [ 28.903011] iwl3945 0000:0c:00.0: 0000000542 0x001f3b6e 0450 [ 28.903011] iwl3945 0000:0c:00.0: 0000000547 0x001f3b6e 0450 [ 28.903011] iwl3945 0000:0c:00.0: 0000000553 0x00000100 0125 [ 28.962249] iwl3945 0000:0c:00.0: Error Reply type 0x000002FC cmd REPLY_SCAN_CMD (0x80) seq 0x441C ser 0x00340000 [ 28.969271] iwl3945 0000:0c:00.0: Can't stop Rx DMA. [ 29.037305] iwl3945 0000:0c:00.0: Error setting Tx power (-5). [ 29.269626] 802.1Q VLAN Support v1.8 Ben Greear <greearb> [ 29.272376] All bugs added by David S. Miller <davem>
This problem is not fixed yet ...
kernel-2.6.38.3-18.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
It doesn't seem to be fixed yet, hit this crash with kernel-2.6.38.3-18.fc15.i686.
Fixes posted to stable and fedora mailing lists. http://lists.fedoraproject.org/pipermail/kernel/2011-April/003081.html
The only thing I can think of with NM that's changed since F14/0.8.4 is that we now use the nl80211 wpa_supplicant driver if we can instead of WEXT. NM still periodically scans just like it always did, but the nl80211 thing and the usage of wpa_supplicant 0.7.3 is the biggest wifi-related change. So it's got to be something in the supplicant nl80211 code or in mac80211 itself that's causing the issue, since previously only WEXT was used.
kernel-2.6.38.4-20.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.38.4-20.fc15
Stanislaw, the kernel-2.6.38.4-20.fc15 is working for me, now. My iwl3945abg wireless interface no longer gets the errors I copied above, and it seems to function well. After loading the firmware, it complains about not being able to set the TX power, but that apparently doesn't keep it from working.
*** Bug 699447 has been marked as a duplicate of this bug. ***
kernel-2.6.38.4-20.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.
I'm still getting kernel crashes and no wireless connection (with and without options iwl3945 disable_hw_scan=1). [chris@linuxbox ~]$ uname -r 2.6.38.4-20.fc15.x86_64 [chris@linuxbox ~]$ sudo service NetworkManager stop [sudo] password for chris: Stopping NetworkManager (via systemctl): [ OK ] [chris@linuxbox ~]$ su - Password: [root@linuxbox ~]# iwconfig wlan0 channel 11 iwconfig wlan0 mode ad-hoc iwconfig wlan0 essid some_network iwconfig wlan0 key 00001111111111111000000000 ifconfig wlan0 up -->Crash! On F14 everything works fine.
Christian, this is a different problem, can you open a new bug report for it and assign it to me?
OK Managed Mode is working fine: [chris@linuxbox ~]$ iwconfig wlan0 wlan0 IEEE 802.11abg ESSID:"eduroam" Mode:Managed Frequency:2.437 GHz Access Point: 00:16:9D:F4:ED:51 Bit Rate=54 Mb/s Tx-Power=15 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=57/70 Signal level=-53 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:1 Invalid misc:25 Missed beacon:0 Only ad-hoc mode makes problems, but because Managed Mode is working I have updated all the other packages and now the boot hangs after "Started Network Time Service" and at the moment I don't have the time for further testing. I will reinstall F15 when there is a new ISO available (hopefully next week "Compose 'Final' RC").