Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753182Ab0L2Ak5 (ORCPT ); Tue, 28 Dec 2010 19:40:57 -0500 Received: from mail-yw0-f46.google.com ([209.85.213.46]:39344 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752110Ab0L2Ak4 (ORCPT ); Tue, 28 Dec 2010 19:40:56 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :content-type:content-transfer-encoding; b=i/0LeZ9UBOjJNW7ERf7cx5dLWIPviNG+2ewVqeB3sRse5tnRy8d6UhzsWMM5e+S5F1 qE6DeX5z6H1yGg9ECoGNq9BiY2g34tS4iu5uxEW45COXVrVqHqFsouF7qtpIJ9TEsJsN lPbjqJc5exH3HpA9Oz1KVl3ajTdAcOKIICKII= Message-ID: <4D1A8200.4010609@lwfinger.net> Date: Tue, 28 Dec 2010 18:34:08 -0600 From: Larry Finger User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20101125 SUSE/3.0.11 Thunderbird/3.0.11 MIME-Version: 1.0 To: Mario Holbe CC: LKML , wireless , b43-dev Subject: Re: 2.6.37-rc7: Regression: b43: crashes in hwrng_register() Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6757 Lines: 127 Mario Holbe wrote: > on 2.6.37-rc7 the b43 driver crashes in hwrng_register(). This makes the > system virtually unusable since it appears to block networking syscalls. > This leads to, for example, ifconfig never return. > This issue does also exist in 2.6.37-rc5. > This issue does not exist in 2.6.36.2. > > The hardware in question is: > 02:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01) > on a Lenovo Ideapad S12 with VIA Nano. > dmesg excerpt: > [ 2.056847] b43-pci-bridge 0000:02:00.0: PCI INT A -> GSI 28 (level, low) -> IRQ 28 > [ 2.056864] b43-pci-bridge 0000:02:00.0: setting latency timer to 64 ... > [ 8.643695] b43-phy0: Broadcom 4312 WLAN found (core revision 15) > [ 9.047514] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht' > [ 9.048441] Registered led device: b43-phy0::tx > [ 9.048479] Registered led device: b43-phy0::rx > [ 9.048518] Registered led device: b43-phy0::radio > [ 9.048542] Broadcom 43xx driver loaded [ Features: PMLS, Firmware-ID: FW13 ] ... > [ 24.312100] b43-phy0: Loading firmware version 410.2160 (2007-05-26 15:32:10) ... > [ 29.848400] b43-pci-bridge 0000:02:00.0: PCI: Disallowing DAC for device > [ 29.848407] b43-phy0: DMA mask fallback from 64-bit to 32-bit > [ 29.868632] BUG: unable to handle kernel paging request at 907cde0c > [ 29.868640] IP: [] hwrng_register+0x4c/0x139 [rng_core] > [ 29.868655] *pde = 00000000 > [ 29.868659] Oops: 0000 [#1] SMP > [ 29.868664] last sysfs file: /sys/bus/pci/drivers/parport_pc/uevent > [ 29.868670] Modules linked in: parport_pc ppdev lp parport sbs sbshc power_meter pci_slot hed fan container acpi_cpufreq mperf cpufreq_conservative cpufreq_userspace cpufreq_stats cpufreq_powersave dm_crypt fuse loop eeprom via_cputemp i2c_dev nvram padlock_aes aes_i586 aes_generic padlock_sha sha256_generic sha1_generic via_rng msr cpuid snd_hda_codec_realtek snd_hda_intel snd_hda_codec arc4 snd_hwdep ecb snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi b43 snd_rawmidi uvcvideo snd_seq_midi_event joydev videodev btusb snd_seq rng_core video ac battery tpm_tis v4l1_compat tpm tpm_bios output power_supply i2c_viapro snd_timer ideapad_laptop snd_seq_device serio_raw wmi mac80211 cfg80211 processor snd pcspkr i2c_core psmouse button bluetooth evdev shpchp soundcore snd_page_alloc rfkill pci_hotplug ext3 jbd mbcache raid10 raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx raid1 raid0 multipath linear md_mod dm_mirror dm_region_hash dm_log dm_mod btrfs zli b_deflate crc32c libcrc32c sd_mod crc_t10dif ata_generic uhci_hcd pata_via libata ssb ehci_hcd tg3 scsi_mod usbcore pcmcia via_sdmmc mmc_core pcmcia_core libphy thermal thermal_sys nls_base [last unloaded: scsi_wait_scan] > [ 29.868810] > [ 29.868816] Pid: 1781, comm: NetworkManager Not tainted 2.6.37-rc7-686 #1 MoutCook/20021,2959 > [ 29.868822] EIP: 0060:[] EFLAGS: 00010286 CPU: 0 > [ 29.868829] EIP is at hwrng_register+0x4c/0x139 [rng_core] > [ 29.868834] EAX: 00000001 EBX: f4b17010 ECX: f6e5db6c EDX: f4b17035 > [ 29.868839] ESI: 907cddf0 EDI: 00000000 EBP: 00000036 ESP: f6e5db54 > [ 29.868844] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 29.868850] Process NetworkManager (pid: 1781, ti=f6e5c000 task=f6eb6080 task.ti=f6e5c000) > [ 29.868854] Stack: > [ 29.868856] f4b16fc0 f4b17035 f8e5a870 f4b17035 0000001f f8e70095 f8e6f9ca f4b71e70 > [ 29.868866] 0000000f f6c95000 f6c95000 f6e97400 f4b162c0 f4b10240 f4b16fc8 f8e5ad67 > [ 29.868875] f89e43da f4b162c0 f6cab400 f8b80e44 f6cab000 f8b70889 f8b6fe7a 00000000 > [ 29.868884] Call Trace: > [ 29.868909] [] ? b43_wireless_core_init+0xd0c/0xdd6 [b43] > [ 29.868925] [] ? b43_op_start+0xf8/0x142 [b43] > [ 29.868947] [] ? cfg80211_netdev_notifier_call+0x342/0x355 [cfg80211] > [ 29.868984] [] ? ieee80211_do_open+0xed/0x45f [mac80211] > [ 29.869002] [] ? ieee80211_check_concurrent_iface+0x1c/0x135 [mac80211] > [ 29.869015] [] ? __dev_open+0x7d/0xa7 > [ 29.869022] [] ? __dev_change_flags+0x9a/0x10d > [ 29.869028] [] ? dev_change_flags+0x10/0x3b > [ 29.869036] [] ? do_setlink+0x23e/0x532 > [ 29.869044] [] ? rtnl_setlink+0xd0/0xe1 > [ 29.869058] [] ? __strncpy_from_user+0x1d/0x2b > [ 29.869064] [] ? rtnl_setlink+0x0/0xe1 > [ 29.869069] [] ? rtnetlink_rcv_msg+0x186/0x19c > [ 29.869075] [] ? rtnetlink_rcv_msg+0x0/0x19c > [ 29.869082] [] ? netlink_rcv_skb+0x2d/0x72 > [ 29.869088] [] ? rtnetlink_rcv+0x18/0x1e > [ 29.869093] [] ? netlink_unicast+0xba/0x10e > [ 29.869099] [] ? netlink_sendmsg+0x23d/0x256 > [ 29.869111] [] ? __sock_sendmsg+0x48/0x4e > [ 29.869117] [] ? sock_sendmsg+0x78/0x8f > [ 29.869123] [] ? sock_sendmsg+0x78/0x8f > [ 29.869131] [] ? d_kill+0x38/0x3d > [ 29.869141] [] ? verify_iovec+0x3d/0x79 > [ 29.869147] [] ? sys_sendmsg+0x15f/0x1c1 > [ 29.869153] [] ? sockfd_lookup_light+0x13/0x3f > [ 29.869160] [] ? sys_sendto+0xfd/0x121 > [ 29.869166] [] ? sk_prot_alloc+0x62/0xd6 > [ 29.869174] [] ? __switch_to+0x6f/0xe2 > [ 29.869183] [] ? schedule+0x579/0x5b6 > [ 29.869190] [] ? sys_recvmsg+0x3c/0x47 > [ 29.869196] [] ? sys_socketcall+0x17f/0x1cb > [ 29.869202] [] ? sysenter_do_call+0x12/0x28 > [ 29.869206] Code: f8 e8 46 25 53 c8 8b 35 ec 45 d5 f8 eb 1a 8b 13 8b 06 e8 17 11 3f c8 85 c0 75 0a be ef ff ff ff e9 d3 00 00 00 8b 76 1c 83 ee 1c <8b> 46 1c 0f 18 00 90 81 fe d0 45 d5 f8 75 d4 83 3d ec 47 d5 f8 > [ 29.869249] EIP: [] hwrng_register+0x4c/0x139 [rng_core] SS:ESP 0068:f6e5db54 > [ 29.869259] CR2: 00000000907cde0c > [ 29.869264] ---[ end trace 6719399ed79e8cc1 ]--- I almost missed this posting. Please post wireless problems with linux-wireless@vger.kernel.org for better visibility. I have a BCM4312 (14e4:4315) on a netbook that does not have this problem, thus I will have to rely on your debugging. An additional difficulty is that the only changes to b43 between 2.6.36 and 2.6.37 are adding an additional PCI ID, some fixes to the SDIO driver, and some code for an 802.11n device. None of these should affect your 802.11 b/g unit. Is it possible for you to bisect between 2.6.36 and 2.6.37-rc5? I wish I could suggest some way to minimize the number of commits and builds, but the problem could be anywhere. Larry -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/