iwlagn km shuts down/gets tainted randomly

[oc]

Even though I no longer get kernel panics from iwlagn, the bugs are still not completely fixed.

Hardware: HP Compaq 8710W, Core 2 Duo T7700 @ 2.40, 2gb ram, Mobile PM965/GM965/GL960 chipset, 82801H (ICH8) USB, Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61) wireless...

Kernel: Linux oc-laptop 2.6.28-7-generic #20-Ubuntu SMP Mon Feb 9 15:42:34 UTC 2009 x86_64 GNU/Linux
OS: Ubuntu Intrepid and
Description: Ubuntu jaunty (development branch)
Release: 9.04

Wireless is disabled, and modprobe -r && modprobe, nor rmmod or insmod will reload the iwlagn (nor cfg80211, iwlcore, mac80211, ...) module. Once in a while I get the following traces in my messages. A reboot is required to get wireless up and working again.

Call trace:

Feb 14 19:20:51 oc-laptop kernel: [16006.397148] iwlagn/0: page allocation failure. order:4, mode:0x40d0
Feb 14 19:20:51 oc-laptop kernel: [16006.397150] Pid: 2266, comm: iwlagn/0 Tainted: P 2.6.28-7-generic #20-Ubuntu
Feb 14 19:20:51 oc-laptop kernel: [16006.397152] Call Trace:
Feb 14 19:20:51 oc-laptop kernel: [16006.397159] [<ffffffff802b38fe>] __alloc_pages_internal+0x3ee/0x500
Feb 14 19:20:51 oc-laptop kernel: [16006.397176] [<ffffffffa0971537>] ? iwl_tx_queue_init+0x57/0x180 [iwlcore]
Feb 14 19:20:51 oc-laptop kernel: [16006.397179] [<ffffffff802b3a8e>] __get_free_pages+0x1e/0x60
Feb 14 19:20:51 oc-laptop kernel: [16006.397185] [<ffffffffa096f8e9>] iwl_tx_queue_alloc+0x39/0x1a0 [iwlcore]
Feb 14 19:20:51 oc-laptop kernel: [16006.397191] [<ffffffffa09715a8>] iwl_tx_queue_init+0xc8/0x180 [iwlcore]
Feb 14 19:20:51 oc-laptop kernel: [16006.397198] [<ffffffffa09719ac>] iwl_txq_ctx_reset+0x18c/0x1e0 [iwlcore]
Feb 14 19:20:51 oc-laptop kernel: [16006.397204] [<ffffffffa096af8b>] iwl_hw_nic_init+0xfb/0x160 [iwlcore]
Feb 14 19:20:51 oc-laptop kernel: [16006.397212] [<ffffffffa098c10b>] __iwl4965_up+0xbb/0x2f0 [iwlagn]
Feb 14 19:20:51 oc-laptop kernel: [16006.397225] [<ffffffffa098c340>] ? iwl4965_bg_up+0x0/0x60 [iwlagn]
Feb 14 19:20:51 oc-laptop kernel: [16006.397230] [<ffffffffa098c379>] iwl4965_bg_up+0x39/0x60 [iwlagn]
Feb 14 19:20:51 oc-laptop kernel: [16006.397233] [<ffffffff8026127a>] run_workqueue+0xba/0x190
Feb 14 19:20:51 oc-laptop kernel: [16006.397235] [<ffffffff80261557>] worker_thread+0xa7/0x120
Feb 14 19:20:51 oc-laptop kernel: [16006.397238] [<ffffffff802658d0>] ? autoremove_wake_function+0x0/0x40
Feb 14 19:20:51 oc-laptop kernel: [16006.397240] [<ffffffff802614b0>] ? worker_thread+0x0/0x120
Feb 14 19:20:51 oc-laptop kernel: [16006.397242] [<ffffffff80265469>] kthread+0x49/0x90
Feb 14 19:20:51 oc-laptop kernel: [16006.397245] [<ffffffff80213979>] child_rip+0xa/0x11
Feb 14 19:20:51 oc-laptop kernel: [16006.397247] [<ffffffff80265420>] ? kthread+0x0/0x90
Feb 14 19:20:51 oc-laptop kernel: [16006.397249] [<ffffffff8021396f>] ? child_rip+0x0/0x11
Feb 14 19:20:51 oc-laptop kernel: [16006.397251] Mem-Info:
Feb 14 19:20:51 oc-laptop kernel: [16006.397252] DMA per-cpu:
Feb 14 19:20:51 oc-laptop kernel: [16006.397253] CPU 0: hi: 0, btch: 1 usd: 0
Feb 14 19:20:51 oc-laptop kernel: [16006.397254] CPU 1: hi: 0, btch: 1 usd: 0
Feb 14 19:20:51 oc-laptop kernel: [16006.397256] DMA32 per-cpu:
Feb 14 19:20:51 oc-laptop kernel: [16006.397257] CPU 0: hi: 186, btch: 31 usd: 0
Feb 14 19:20:51 oc-laptop kernel: [16006.397258] CPU 1: hi: 186, btch: 31 usd: 0
Feb 14 19:20:51 oc-laptop kernel: [16006.397261] Active_anon:114292 active_file:46871 inactive_anon:40787
Feb 14 19:20:51 oc-laptop kernel: [16006.397262] inactive_file:189586 unevictable:4 dirty:35156 writeback:292 unstable:0
Feb 14 19:20:51 oc-laptop kernel: [16006.397262] free:38196 slab:53567 mapped:18186 pagetables:4974 bounce:0
Feb 14 19:20:51 oc-laptop kernel: [16006.397265] DMA free:6696kB min:12kB low:12kB high:16kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB present:5668kB pages_scanned:0 all_unreclaimable? no
Feb 14 19:20:51 oc-laptop kernel: [16006.397267] lowmem_reserve[]: 0 2003 2003 2003
Feb 14 19:20:51 oc-laptop kernel: [16006.397271] DMA32 free:146088kB min:5720kB low:7148kB high:8580kB active_anon:457168kB inactive_anon:163148kB active_file:187484kB inactive_file:758344kB unevictable:16kB present:2052004kB pages_scanned:0 all_unreclaimable? no
Feb 14 19:20:51 oc-laptop kernel: [16006.397273] lowmem_reserve[]: 0 0 0 0
Feb 14 19:20:51 oc-laptop kernel: [16006.397276] DMA: 2*4kB 2*8kB 1*16kB 4*32kB 4*64kB 3*128kB 3*256kB 2*512kB 0*1024kB 0*2048kB 1*4096kB = 6696kB
Feb 14 19:20:51 oc-laptop kernel: [16006.397283] DMA32: 35264*4kB 121*8kB 152*16kB 38*32kB 1*64kB 1*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 146120kB
Feb 14 19:20:51 oc-laptop kernel: [16006.397290] 239830 total pagecache pages
Feb 14 19:20:51 oc-laptop kernel: [16006.397291] 812 pages in swap cache
Feb 14 19:20:51 oc-laptop kernel: [16006.397292] Swap cache stats: add 6198, delete 5386, find 2278/2312
Feb 14 19:20:51 oc-laptop kernel: [16006.397294] Free swap = 4779676kB
Feb 14 19:20:51 oc-laptop kernel: [16006.397295] Total swap = 4803392kB
Feb 14 19:20:51 oc-laptop kernel: [16006.408203] 524208 pages RAM
Feb 14 19:20:51 oc-laptop kernel: [16006.408205] 15519 pages reserved
Feb 14 19:20:51 oc-laptop kernel: [16006.408207] 210729 pages shared
Feb 14 19:20:51 oc-laptop kernel: [16006.408208] 288648 pages non-shared
Feb 14 19:37:12 oc-laptop -- MARK --

ProblemType: Bug
Architecture: amd64
Dependencies:
 libgcc1 1:4.3.3-3ubuntu5
 gcc-4.3-base 4.3.3-3ubuntu5
 findutils 4.4.0-2ubuntu3
 libc6 2.9-0ubuntu9
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: libiw29 29-1.1ubuntu2
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: wireless-tools
Uname: Linux 2.6.28-7-generic x86_64

[Jesse Michael (jesse.michael)]

I've had this happen to me twice now on Intrepid with 2.6.27-11-generic. I'm also on an x86_64 box.

[Jesse Michael (jesse.michael)]

It's not fatal for me and I can rmmod and modprobe iwlagn to successfully reassociate with the network, but the fundamental problem with not being able to allocate SKB buffers is still there so the problem happens again after a while.

Here's my full dmesg from bootup including three of these errors.

[xtsbdu3reyrbrmroezob (xtsbdu3reyrbrmroezob)]

I also require a rmmod/modprobe of iwlagn every few hours. The driver appears to be faulty.

[oc (oc-rynning)]

I confirm that the current kernel/driver combo behaves like Kristian state (re-insertable). Although I only have to rmmod/modprobe approx once a week. Still newest Intrepid for me too.

[oc (oc-rynning)]

Err sorry. Jaunty.

[Sondre Slathia (sondre-slathia)]

I got this error earlier today and it resulted in a kernel panic.
 I'm running Linux ThinkTank 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009 x86_64 GNU/Linux(Jaunty)

Adding my kern.log as attachment (subsection)