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Message-ID: <4E0604BC.3060002@lwfinger.net> Date: Sat, 25 Jun 2011 10:54:36 -0500 From: Larry Finger <Larry.Finger@...inger.net> To: LKML <linux-kernel@...r.kernel.org> CC: wireless <linux-wireless@...r.kernel.org>, Chuck Ebbert <cebbert@...hat.com> Subject: Possible regression in 3.0-rc4 with RTL8187B While running tests on 3.0-rc4 from the wireless-testing git tree, I tested an RTL8187B dongle that had not been used for some time. With it, I got the following WARNING: [291533.186383] ------------[ cut here ]------------ [291533.186438] WARNING: at arch/x86/kernel/dumpstack_64.c:129 dump_trace+0x292/0x3a0() [291533.186465] Hardware name: HP Pavilion dv2700 Notebook PC [291533.186487] Perf: bad frame pointer = 00000000000000cf in callchain [291533.186511] Modules linked in: loop aes_x86_64 aes_generic arc4 rtl8187 mac80211 cfg80211 rfkill eeprom_93cx6 vboxnetadp vboxnetflt vboxdrv fuse af_packet snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device edd nfs lockd auth_rpcgss nfs_acl sunrpc ipv6 cpufreq_conservative cpufreq_userspace cpufreq_powersave powernow_k8 mperf ext4 jbd2 crc16 dm_mod ide_cd_mod cdrom snd_hda_codec_conexant ide_pci_generic snd_hda_intel snd_hda_codec snd_pcm amd74xx snd_timer snd ide_core forcedeth sg k8temp joydev serio_raw soundcore snd_page_alloc battery hwmon i2c_nforce2 ac i2c_core video button ext3 jbd mbcache sd_mod ohci_hcd ahci libahci libata ehci_hcd scsi_mod usbcore fan processor thermal [last unloaded: r8712u] [291533.186859] Pid: 0, comm: kworker/0:0 Tainted: G C 3.0.0-rc4-wl+ #22 [291533.186885] Call Trace: [291533.186900] <IRQ> [<ffffffff81048f4a>] warn_slowpath_common+0x7a/0xb0 [291533.186940] [<ffffffff81049021>] warn_slowpath_fmt+0x41/0x50 [291533.186970] [<ffffffff8136e9a8>] ? bad_to_user+0x82/0x668 [291533.186997] [<ffffffff81004be2>] dump_trace+0x292/0x3a0 [291533.187028] [<ffffffff8100fd3a>] save_stack_trace+0x2a/0x50 [291533.187054] [<ffffffff811e3a54>] dma_entry_alloc+0x54/0x90 [291533.187080] [<ffffffff811e3d06>] debug_dma_map_page+0x86/0x160 [291533.187142] [<ffffffffa00201ed>] usb_hcd_map_urb_for_dma+0x4ed/0x590 [usbcore] [291533.187195] [<ffffffffa0020536>] usb_hcd_submit_urb+0xe6/0x6a0 [usbcore] [291533.187229] [<ffffffff8107f87d>] ? trace_hardirqs_off+0xd/0x10 [291533.187259] [<ffffffff8136a9b7>] ? _raw_spin_unlock_irqrestore+0x57/0x70 [291533.187308] [<ffffffffa00216e9>] usb_submit_urb+0xe9/0x2c0 [usbcore] [291533.187339] [<ffffffffa0726315>] rtl8187b_status_cb+0x65/0x150 [rtl8187] [291533.187386] [<ffffffffa001f48f>] usb_hcd_giveback_urb+0x5f/0xe0 [usbcore] [291533.187426] [<ffffffffa012ff33>] ehci_urb_done+0x83/0xe0 [ehci_hcd] [291533.187460] [<ffffffffa0130325>] qh_completions+0x395/0x4c0 [ehci_hcd] [291533.187495] [<ffffffffa0132783>] ehci_work+0xe3/0xb40 [ehci_hcd] [291533.187530] [<ffffffffa01349cc>] ehci_irq+0x1cc/0x220 [ehci_hcd] [291533.187560] [<ffffffff811139cd>] ? dma_pool_alloc+0x1ed/0x330 [291533.187603] [<ffffffffa001ed30>] usb_hcd_irq+0x40/0xb0 [usbcore] [291533.187635] [<ffffffff810afb4d>] handle_irq_event_percpu+0x5d/0x210 [291533.187665] [<ffffffff810afd43>] handle_irq_event+0x43/0x70 [291533.187693] [<ffffffff810b22f9>] ? handle_fasteoi_irq+0x19/0xd0 [291533.187722] [<ffffffff810b2335>] handle_fasteoi_irq+0x55/0xd0 [291533.187750] [<ffffffff81004834>] handle_irq+0x44/0xa0 [291533.187776] [<ffffffff81004448>] do_IRQ+0x58/0xe0 [291533.187802] [<ffffffff8136ac93>] common_interrupt+0x13/0x13 [291533.187829] [<ffffffff8136a9b7>] _raw_spin_unlock_irqrestore+0x57/0x70 [291533.187861] [<ffffffffa01af6c4>] ? enc128+0x34f/0x80b [aes_x86_64] [291533.187974] [<ffffffffa06bc5ae>] ? ieee80211_aes_ccm_decrypt+0xbe/0x170 [mac80211] [291533.188031] [<ffffffffa06aaf65>] ? ieee80211_crypto_ccmp_decrypt+0x1a5/0x230 [mac80211] [291533.188094] [<ffffffffa06c18b8>] ? ieee80211_rx_handlers+0x998/0x1fc0 [mac80211] [291533.188128] [<ffffffff812b6036>] ? skb_queue_tail+0x26/0x60 [291533.188156] [<ffffffff810856fd>] ? trace_hardirqs_on+0xd/0x10 [291533.188211] [<ffffffffa06c312e>] ? ieee80211_prepare_and_rx_handle+0x24e/0x890 [mac80211] [291533.188274] [<ffffffffa06c3ad0>] ? ieee80211_rx+0x360/0xb70 [mac80211] [291533.188330] [<ffffffffa06c3815>] ? ieee80211_rx+0xa5/0xb70 [mac80211] [291533.188382] [<ffffffffa06a5e41>] ? ieee80211_tasklet_handler+0xc1/0xd0 [mac80211] [291533.188418] [<ffffffff8104fb73>] ? tasklet_action+0x73/0x120 [291533.188445] [<ffffffff810505bd>] ? __do_softirq+0xbd/0x210 [291533.188472] [<ffffffff8136c6cc>] ? call_softirq+0x1c/0x30 [291533.188499] [<ffffffff81004915>] ? do_softirq+0x85/0xc0 [291533.188525] [<ffffffff810509a6>] ? irq_exit+0x96/0xb0 [291533.188550] [<ffffffff81004451>] ? do_IRQ+0x61/0xe0 [291533.188576] [<ffffffff8136ac93>] ? common_interrupt+0x13/0x13 [291533.188602] ------------[ cut here ]------------ This problem may be related to https://bugzilla.kernel.org/show_bug.cgi?id=31012 and its corresponding report at http://marc.info/?l=linux-kernel&m=129995721014931&w=2. AFAICT, this regression has not been resolved. As this dongle has not been used in some time, I do not know when the regression occurred, but I will do some tests to determine that, and then do a bisection. In the meantime, any suggestions regarding this problem would be appreciated. The problem does not occur for an RTL8187L, thus only part of rtl8187 is affected. Larry -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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