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Message-ID: <CAD77+gT-sLRfVK2-WJxSXg-JveRGiRqkzs00Js2vH5w=gh92Ow@mail.gmail.com> Date: Mon, 28 Jan 2013 22:55:25 +0100 From: Richard Hartmann <richih.mailinglist@...il.com> To: Johannes Berg <johannes.berg@...el.com>, Wey-Yi Guy <wey-yi.w.guy@...el.com>, Intel Linux Wireless <ilw@...ux.intel.com>, "John W. Linville" <linville@...driver.com>, Emmanuel Grumbach <emmanuel.grumbach@...el.com>, linux-wireless@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: drivers/net/wireless/iwlwifi/dvm/tx.c: Kernel trace when roaming between different Access Points with the same ESSID Hi all, I can somewhat reproduce this trace. It will happen when roaming from one AP to another AP, both having the same ESSID. Once this happens, wireless stops working. This can be fixed by running rmmod iwldvm iwlwifi mac80211 cfg80211; sleep 10; modprobe iwlwifi Trace: [ 8920.123776] ------------[ cut here ]------------ [ 8920.123797] WARNING: at /build/buildd-linux_3.7.1-1~experimental.1-i386-Au6THQ/linux-3.7.1/drivers/net/wireless/iwlwifi/dvm/tx.c:1189 iwlagn_rx_reply_tx+0x288/0x6e2 [iwldvm]() [ 8920.123800] Hardware name: 4286CTO [ 8920.123802] Modules linked in: parport_pc ppdev lp parport bnep rfcomm cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative uinput nfsd auth_rpcgss nfs_acl nfs lockd dns_resolver fscache sunrpc ext4 jbd2 mbcache loop fuse snd_hda_codec_hdmi snd_hda_codec_conexant arc4 coretemp i915 snd_hda_intel iwldvm mac80211 joydev drm_kms_helper drm snd_hda_codec snd_hwdep snd_pcm i2c_algo_bit kvm_intel btusb kvm thinkpad_acpi snd_page_alloc nvram bluetooth i2c_i801 iwlwifi crc32c_intel crc16 snd_seq snd_seq_device snd_timer iTCO_wdt acpi_cpufreq mperf aesni_intel iTCO_vendor_support i2c_core psmouse pcspkr snd aes_i586 xts lrw ac soundcore battery lpc_ich evdev mei tpm_tis gf128mul ablk_helper video serio_raw mfd_core button cfg80211 rfkill tpm cryptd tpm_bios processor wmi xfs sg sd_mod crc_t10dif mmc_block microcode ahci libahci xhci_hcd libata sdhci_pci sdhci mmc_core scsi_mod ehci_hcd e1000e usbcore usb_common thermal thermal_sys [ 8920.123891] Pid: 0, comm: swapper/0 Not tainted 3.7-trunk-686-pae #1 Debian 3.7.1-1~experimental.1 [ 8920.123893] Call Trace: [ 8920.123902] [<c10310c5>] ? warn_slowpath_common+0x68/0x79 [ 8920.123912] [<f86961e2>] ? iwlagn_rx_reply_tx+0x288/0x6e2 [iwldvm] [ 8920.123916] [<c10310e3>] ? warn_slowpath_null+0xd/0x10 [ 8920.123924] [<f86961e2>] ? iwlagn_rx_reply_tx+0x288/0x6e2 [iwldvm] [ 8920.123929] [<c10574b0>] ? load_balance+0x33c/0x520 [ 8920.123940] [<f869b344>] ? iwl_rx_dispatch+0x57/0x63 [iwldvm] [ 8920.123948] [<f85b0d14>] ? iwl_irq_tasklet+0x39c/0x698 [iwlwifi] [ 8920.123953] [<c1037457>] ? tasklet_action+0x62/0xa5 [ 8920.123957] [<c103711b>] ? __do_softirq+0x90/0x192 [ 8920.123961] [<c103708b>] ? perf_trace_irq_handler_entry+0xd7/0xd7 [ 8920.123962] <IRQ> [<c10372cb>] ? irq_exit+0x32/0x7d [ 8920.123971] [<c100d070>] ? do_IRQ+0x65/0x76 [ 8920.123976] [<c12ed2f3>] ? common_interrupt+0x33/0x38 [ 8920.123980] [<c10300d8>] ? copy_process.part.33+0x8a8/0xf0c [ 8920.123985] [<c11b1c03>] ? intel_idle+0xc4/0xec [ 8920.123990] [<c122ea2e>] ? cpuidle_enter+0xb/0xe [ 8920.123994] [<c122edb9>] ? cpuidle_enter_state+0x9/0x33 [ 8920.123998] [<c122ee8e>] ? cpuidle_idle_call+0xab/0x146 [ 8920.124002] [<c10114d7>] ? cpu_idle+0x88/0xac [ 8920.124006] [<c1464966>] ? start_kernel+0x334/0x339 [ 8920.124009] ---[ end trace fc6895e52f152baf ]--- lspci: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:16.3 Serial controller: Intel Corporation 6 Series/C200 Series Chipset Family KT Controller (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4) 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4) 00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b4) 00:1c.6 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 7 (rev b4) 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation QM67 Express Chipset Family LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04) 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) 0d:00.0 System peripheral: Ricoh Co Ltd PCIe SDXC/MMC Host Controller (rev 07) 0e:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) If you need any more info, please let me know; I am not subscribed on all lists so please keep me CC'ed. Thanks, Richard -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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