On Thu, Oct 7, 2010 at 2:31 PM, Luis R. Rodriguez <mcgrof@xxxxxxxxx> wrote: > On Thu, Oct 7, 2010 at 12:27 PM, Johannes Berg > <johannes@xxxxxxxxxxxxxxxx> wrote: >> On Thu, 2010-10-07 at 12:22 -0700, Ben Greear wrote: >> >>> After reboot, and re-run of the script, >>> I saw this in the logs, and shortly after, >>> the SLUB poison warning dumped to screen. >>> >>> Maybe those DMA errors are serious? >> >>> ath: Failed to stop TX DMA in 100 msec after killing last frame >>> ath: Failed to stop TX DMA. Resetting hardware! >> >> That's TX DMA, it can hardly result in invalid memory writes like the >> ones you've been seeing. >> >> I'm still convinced something is wrong with ath9k RX DMA, as you've seen >> the contents of frames written to already freed memory regions. Since I >> don't know anything about ath9k, you should probably not rely on me >> though :-) > > I'm on this now. Lets play. > > I had to remove Â/lib/udev/rules.d/75-persistent-net-generator.rules > to avoid Ubuntu trying to remember the device names and it creating > stax_rename names. > I just ran your script with some modifications. You can find it here: > > http://www.kernel.org/pub/linux/kernel/people/mcgrof/scripts/poo.pl > > I then ran: > > for i in $(seq 0 31) ; do sudo dhclient seq$i; done > > It took about 10 minutes to get IP addresses for all interfaces but it > got there eventually. Odd enough I was unable to ping the AP from any > interface though. Not sure what that was about. But I got no oops, no > slub dump. All I got was some more delba warnings which seems to > indicate we haven't caught all the cases for its use: > > [ 3622.660344] addBA response timer expired on tid 0 > [ 3622.660373] Tx BA session stop requested for 68:7f:74:3b:b1:0f tid 0 > [ 3622.680133] addBA response timer expired on tid 0 > [ 3622.687196] Tx BA session stop requested for 68:7f:74:3b:b1:0f tid 0 > [ 3623.110077] addBA response timer expired on tid 0 > [ 3623.110123] Tx BA session stop requested for 68:7f:74:3b:b1:0f tid 0 > [ 3628.935895] sta10: authenticate with 68:7f:74:3b:b1:10 (try 1) > [ 3628.937194] switched off addBA timer for tid 0 > [ 3628.937196] Aggregation is on for tid 0 > [ 3628.937239] Stopping Tx BA session for 68:7f:74:3b:b1:0f tid 0 > [ 3628.937243] ------------[ cut here ]------------ > [ 3628.937263] WARNING: at include/net/mac80211.h:2694 > rate_control_send_low+0xd3/0x140 [mac80211]() > [ 3628.937265] Hardware name: 6460DWU > [ 3628.937266] Modules linked in: binfmt_misc ppdev > snd_hda_codec_analog rfcomm sco bridge joydev stp bnep l2cap nouveau > ath9k snd_hda_intel mac80211 snd_hda_codec snd_hwdep snd_pcm ttm btusb > ath9k_common thinkpad_acpi ath9k_hw bluetooth drm_kms_helper > snd_seq_midi snd_rawmidi pcmcia snd_seq_midi_event drm snd_seq ath > snd_timer snd_seq_device tpm_tis i2c_algo_bit cfg80211 snd nvram tpm > tpm_bios yenta_socket pcmcia_rsrc video psmouse output pcmcia_core > serio_raw soundcore snd_page_alloc intel_agp lp parport ohci1394 > e1000e ieee1394 ahci libahci > [ 3628.937307] Pid: 49, comm: kworker/u:3 Tainted: G Â Â Â ÂW > 2.6.36-rc6-wl+ #263 > [ 3628.937310] Call Trace: > [ 3628.937317] Â[<ffffffff8105ffcf>] warn_slowpath_common+0x7f/0xc0 > [ 3628.937320] Â[<ffffffff8106002a>] warn_slowpath_null+0x1a/0x20 > [ 3628.937329] Â[<ffffffffa032f603>] rate_control_send_low+0xd3/0x140 [mac80211] > [ 3628.937336] Â[<ffffffffa038bfd8>] ath_get_rate+0x48/0x570 [ath9k] > [ 3628.937340] Â[<ffffffff812b9f39>] ? put_dec+0x59/0x60 > [ 3628.937349] Â[<ffffffffa032f42e>] rate_control_get_rate+0x8e/0x190 [mac80211] > [ 3628.937360] Â[<ffffffffa0339928>] > ieee80211_tx_h_rate_ctrl+0x1a8/0x4e0 [mac80211] > [ 3628.937370] Â[<ffffffffa033a000>] invoke_tx_handlers+0x100/0x140 [mac80211] > [ 3628.937379] Â[<ffffffffa033a0c5>] ieee80211_tx+0x85/0x240 [mac80211] > [ 3628.937384] Â[<ffffffff8147b890>] ? skb_release_data+0xd0/0xe0 > [ 3628.937386] Â[<ffffffff8147d72f>] ? pskb_expand_head+0x10f/0x1a0 > [ 3628.937397] Â[<ffffffffa033a336>] ieee80211_xmit+0xb6/0x1d0 [mac80211] > [ 3628.937399] Â[<ffffffff8147b9d3>] ? __alloc_skb+0x83/0x170 > [ 3628.937409] Â[<ffffffffa033a4a4>] ieee80211_tx_skb+0x54/0x70 [mac80211] > [ 3628.937418] Â[<ffffffffa03230ad>] ieee80211_send_delba+0x11d/0x190 [mac80211] > [ 3628.937427] Â[<ffffffffa0323a18>] > ieee80211_stop_tx_ba_cb+0x1b8/0x240 [mac80211] > [ 3628.937431] Â[<ffffffff81036c89>] ? default_spin_lock_flags+0x9/0x10 > [ 3628.937440] Â[<ffffffffa032e031>] ieee80211_iface_work+0x271/0x340 [mac80211] > [ 3628.937450] Â[<ffffffffa032ddc0>] ? ieee80211_iface_work+0x0/0x340 [mac80211] > [ 3628.937453] Â[<ffffffff8107a203>] process_one_work+0x123/0x440 > [ 3628.937457] Â[<ffffffff8107c750>] worker_thread+0x170/0x400 > [ 3628.937460] Â[<ffffffff8107c5e0>] ? worker_thread+0x0/0x400 > [ 3628.937463] Â[<ffffffff81080b76>] kthread+0x96/0xa0 > [ 3628.937466] Â[<ffffffff8100bea4>] kernel_thread_helper+0x4/0x10 > [ 3628.937469] Â[<ffffffff81080ae0>] ? kthread+0x0/0xa0 > [ 3628.937472] Â[<ffffffff8100bea0>] ? kernel_thread_helper+0x0/0x10 > [ 3628.937474] ---[ end trace 9dd0d025ccb9b75c ]--- > [ 3628.937980] switched off addBA timer for tid 0 > [ 3628.937982] Aggregation is on for tid 0 > > But other than this I got nothing. I left the box sit there for about > 1 hour and came back and it was still going with no issues. Mind you, > I can't ping but that seems like another issue. > > You can find my logs here: > > http://www.kernel.org/pub/linux/kernel/people/mcgrof/logs/2010/10-07-stress-sta-01/ Doh, I did not have CONFIG_SLUB_DEBUG_ON=y so building now with that. Luis -- 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
