WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()

[Ariel Lim]

I attempted to use my iPhone 4 iOS4.3 as an internet modem on my installation of Ubuntu 11.04 beta 2

I plugged my iPhone usb cord to my laptop USB port and iPhone mounted successfully.

turned on the iPhone Personal Hotspot and on my Ubuntu I went to network manager and clicked on Auto Ethernet which is the iPhone modem name recognized. After I clicked on it the network icon pulsed and the error box popped.

Here's content of dmesg command I issued in the terminal:

[ 19.059650] ppdev: user-space parallel port driver
[ 20.055225] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0
[ 23.575147] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=0
[ 112.876140] usb 1-2: new high speed USB device using ehci_hcd and address 4
[ 113.317704] ipheth 1-2:4.2: Apple iPhone USB Ethernet device attached
[ 113.318374] usbcore: registered new interface driver ipheth
[ 113.385521] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 115.042210] show_signal_msg: 24 callbacks suppressed
[ 115.042217] iphone-set-info[1543]: segfault at 8 ip 00932706 sp bfe20154 error 4 in libc-2.13.so[8b8000+15a000]
[ 413.000761] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 418.016042] ------------[ cut here ]------------
[ 418.016063] WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()
[ 418.016070] Hardware name: Compaq Presario C700 Notebook PC
[ 418.016076] NETDEV WATCHDOG: eth1 (ipheth): transmit queue 0 timed out
[ 418.016081] Modules linked in: ipheth parport_pc ppdev snd_hda_codec_conexant arc4 binfmt_misc joydev snd_hda_intel snd_hda_codec snd_hwdep i915 ath5k snd_pcm ath mac80211 hp_wmi uvcvideo drm_kms_helper sparse_keymap snd_seq_midi snd_rawmidi videodev drm snd_seq_midi_event psmouse snd_seq cfg80211 serio_raw snd_timer i2c_algo_bit snd_seq_device snd soundcore snd_page_alloc video lp parport usb_storage uas ahci libahci 8139too 8139cp
[ 418.016179] Pid: 0, comm: swapper Not tainted 2.6.38-8-generic #42-Ubuntu
[ 418.016185] Call Trace:
[ 418.016199] [<c104f912>] ? warn_slowpath_common+0x72/0xa0
[ 418.016209] [<c144a073>] ? dev_watchdog+0x213/0x220
[ 418.016218] [<c144a073>] ? dev_watchdog+0x213/0x220
[ 418.016228] [<c104f9e3>] ? warn_slowpath_fmt+0x33/0x40
[ 418.016238] [<c144a073>] ? dev_watchdog+0x213/0x220
[ 418.016248] [<c1069231>] ? __queue_work+0xe1/0x360
[ 418.016259] [<c10b3d12>] ? rcu_report_qs_rnp+0x72/0x100
[ 418.016270] [<c105c76b>] ? call_timer_fn+0x2b/0xe0
[ 418.016279] [<c1127fc9>] ? file_free_rcu+0x29/0x30
[ 418.016287] [<c1127fc9>] ? file_free_rcu+0x29/0x30
[ 418.016296] [<c1449e60>] ? dev_watchdog+0x0/0x220
[ 418.016304] [<c105daa9>] ? run_timer_softirq+0xe9/0x1e0
[ 418.016314] [<c1449e60>] ? dev_watchdog+0x0/0x220
[ 418.016323] [<c1056622>] ? __do_softirq+0x82/0x170
[ 418.016332] [<c10565a0>] ? __do_softirq+0x0/0x170
[ 418.016337] <IRQ> [<c10567ed>] ? irq_exit+0x6d/0x80
[ 418.016355] [<c15107ab>] ? do_IRQ+0x4b/0xc0
[ 418.016365] [<c1003670>] ? common_interrupt+0x30/0x38
[ 418.016374] [<c10700d8>] ? do_cpu_nanosleep+0x38/0x1b0
[ 418.016386] [<c12e8db4>] ? arch_local_irq_enable+0x5/0xb
[ 418.016395] [<c12e9a9b>] ? acpi_idle_enter_bm+0x227/0x25e
[ 418.016422] [<c14061fd>] ? cpuidle_idle_call+0x7d/0x160
[ 418.016430] [<c10019ca>] ? cpu_idle+0x8a/0xc0
[ 418.016439] [<c1038d2e>] ? complete+0x4e/0x60
[ 418.016451] [<c14f0d2d>] ? rest_init+0x5d/0x70
[ 418.016462] [<c178d7e1>] ? start_kernel+0x35f/0x366
[ 418.016470] [<c178d3d5>] ? pass_all_bootoptions+0x0/0xa
[ 418.016480] [<c178d0e0>] ? i386_start_kernel+0xe0/0xe8
[ 418.016487] ---[ end trace 9607b312b2cf5e6b ]---
[ 418.016492] ipheth: ipheth_tx_timeout: TX timeout
[ 423.288052] eth1: no IPv6 routers present

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ariel 1336 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0x92400000 irq 43'
   Mixer name : 'Conexant CX20561 (Hermosa)'
   Components : 'HDA:14f15051,103c30d9,00100000'
   Controls : 14
   Simple ctrls : 7
Date: Sun Apr 17 14:08:17 2011
Failure: oops
HibernationDevice: RESUME=UUID=44eee9ff-a339-44fa-8fa5-d94a3331b637
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
MachineType: Hewlett-Packard Compaq Presario C700 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=6835f953-5797-46ef-bf3c-7ad10f228ef4 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic N/A
 linux-firmware 1.50
SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/25/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.34
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30D9
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 83.21
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.34:bd09/25/2008:svnHewlett-Packard:pnCompaqPresarioC700NotebookPC:pvrF.34:rvnHewlett-Packard:rn30D9:rvr83.21:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: Compaq Presario C700 Notebook PC
dmi.product.version: F.34
dmi.sys.vendor: Hewlett-Packard

[Bertrand Presles (bpresles)]

I confirm that I got the same issue (iPhone 4 with iOS 4.3.2 on Ubuntu 11.04 beta 2), with the error: iphone-set-info[1543]: segfault at 8 ip 00932706 sp bfe20154 error 4 in libc-2.13.so[8b8000+15a000]

[Rodrigo Messias Barros (rodrigomessiasbarros)]

I confirm that I got the same issue (Iphone 3GS with iOS 4.3.2 on Kubuntu 11.04 beta 2), with the error: "[20149.474744] iphone-set-info[14416]: segfault at 8 ip 00ea3706 sp bfac63e4 error 4 in libc-2.13.so[e29000+15a000]" on dmesg.

[Bertrand Presles (bpresles)]

In case it may help, my syslog trace:

Apr 19 17:21:11 chercq kernel: [26030.421259] iphone-set-info[27164]: segfault at 8 ip 00007ff07f0bd5d1 sp 00007fff6bf10478 error 4 in libc-2.13.so[7ff07f03b000+18a000]
Apr 19 17:21:12 chercq vpnagent[2164]: Function: tableCallbackHandler File: RouteMgr.cpp Line: 1692 Invoked Function: recv Return Code: 11 (0x0000000B) Description: unknown
Apr 19 17:21:12 chercq avahi-daemon[1312]: Joining mDNS multicast group on interface eth1.IPv6 with address fe80::581f:aaff:fe45:aadf.
Apr 19 17:21:12 chercq avahi-daemon[1312]: New relevant interface eth1.IPv6 for mDNS.
Apr 19 17:21:12 chercq avahi-daemon[1312]: Registering new address record for fe80::581f:aaff:fe45:aadf on eth1.*.
Apr 19 17:21:12 chercq vpnagent[2164]: Function: tableCallbackHandler File: RouteMgr.cpp Line: 1692 Invoked Function: recv Return Code: 11 (0x0000000B) Description: unknown
Apr 19 17:21:14 chercq dhclient: DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 8
Apr 19 17:21:15 chercq kernel: [26034.060013] ------------[ cut here ]------------
Apr 19 17:21:15 chercq kernel: [26034.060021] WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x2a0/0x2b0()
Apr 19 17:21:15 chercq kernel: [26034.060023] Hardware name: HP xw4600 Workstation
Apr 19 17:21:15 chercq kernel: [26034.060025] NETDEV WATCHDOG: eth1 (ipheth): transmit queue 0 timed out
Apr 19 17:21:15 chercq kernel: [26034.060026] Modules linked in: ipheth iptable_filter ip_tables x_tables binfmt_misc rfcomm sco bnep l2cap vboxnetadp vboxnetflt vboxdrv vmnet vmblock vsock vmci vmmon snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev hp_wmi lp btusb psmouse snd parport_pc x38_edac soundcore snd_page_alloc edac_core parport sparse_keymap serio_raw bluetooth xfs exportfs usbhid hid usb_storage uas radeon ttm drm_kms_helper floppy tg3 firewire_ohci firewire_core ahci drm i2c_algo_bit libahci crc_itu_t
Apr 19 17:21:15 chercq kernel: [26034.060066] Pid: 0, comm: swapper Tainted: G I 2.6.38-8-generic #42-Ubuntu
Apr 19 17:21:15 chercq kernel: [26034.060068] Call Trace:
Apr 19 17:21:15 chercq kernel: [26034.060069] <IRQ> [<ffffffff81065cef>] ? warn_slowpath_common+0x7f/0xc0
Apr 19 17:21:15 chercq kernel: [26034.060076] [<ffffffff81065de6>] ? warn_slowpath_fmt+0x46/0x50
Apr 19 17:21:15 chercq kernel: [26034.060078] [<ffffffff814ef450>] ? dev_watchdog+0x2a0/0x2b0
Apr 19 17:21:15 chercq kernel: [26034.060082] [<ffffffff81013ae9>] ? sched_clock+0x9/0x10
Apr 19 17:21:15 chercq kernel: [26034.060085] [<ffffffff8108ea88>] ? sched_clock_cpu+0xa8/0x110
Apr 19 17:21:15 chercq kernel: [26034.060087] [<ffffffff814ef1b0>] ? dev_watchdog+0x0/0x2b0
Apr 19 17:21:15 chercq kernel: [26034.060090] [<ffffffff81074964>] ? call_timer_fn+0x44/0x130
Apr 19 17:21:15 chercq kernel: [26034.060093] [<ffffffff814ef1b0>] ? dev_watchdog+0x0/0x2b0
Apr 19 17:21:15 chercq kernel: [26034.060095] [<ffffffff81075fb4>] ? run_timer_softirq+0x134/0x280
Apr 19 17:21:15 chercq kernel: [26034.060098] [<ffffffff8102c85d>] ? lapic_next_event+0x1d/0x30
Apr 19 17:21:15 chercq kernel: [26034.0601...

[Ariel Lim (ariellim)]

Downloaded new updates today through Update Manager, libc/iphone-set-info error was gone already. I think it was fixed by the new updates. But ipheth is still unable to connect to iPhone. Looks like it timed out because dhcp failed or unable to communicate with the device. I tried to alter the IPv4 addressing from auto to manual and entered the ip and gateway as well as the dns manually and it showed as connected but unable to communicate with gateway and internet. No ping responses.

Here's the result of my dmesg output:

[ 370.712128] usb 1-2: new high speed USB device using ehci_hcd and address 5
[ 371.213089] ipheth 1-2:4.2: Apple iPhone USB Ethernet device attached
[ 371.214103] usbcore: registered new interface driver ipheth
[ 372.396290] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 394.988965] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 400.000043] ------------[ cut here ]------------
[ 400.000066] WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()
[ 400.000073] Hardware name: Compaq Presario C700 Notebook PC
[ 400.000079] NETDEV WATCHDOG: eth1 (ipheth): transmit queue 0 timed out
[ 400.000085] Modules linked in: ipheth cryptd aes_i586 aes_generic binfmt_misc parport_pc ppdev snd_hda_codec_conexant snd_hda_intel snd_hda_codec arc4 snd_hwdep snd_pcm snd_seq_midi ath5k ath mac80211 i915 snd_rawmidi snd_seq_midi_event joydev hid_a4tech snd_seq hp_wmi usbhid cfg80211 snd_timer snd_seq_device uvcvideo drm_kms_helper psmouse serio_raw videodev snd soundcore snd_page_alloc sparse_keymap drm lp parport i2c_algo_bit hid video usb_storage uas 8139too ahci 8139cp libahci
[ 400.000199] Pid: 0, comm: kworker/0:0 Not tainted 2.6.38-8-generic #42-Ubuntu
[ 400.000205] Call Trace:
[ 400.000219] [<c104f912>] ? warn_slowpath_common+0x72/0xa0
[ 400.000229] [<c144a073>] ? dev_watchdog+0x213/0x220
[ 400.000238] [<c144a073>] ? dev_watchdog+0x213/0x220
[ 400.000248] [<c104f9e3>] ? warn_slowpath_fmt+0x33/0x40
[ 400.000258] [<c144a073>] ? dev_watchdog+0x213/0x220
[ 400.000268] [<c1069231>] ? __queue_work+0xe1/0x360
[ 400.000280] [<c105c76b>] ? call_timer_fn+0x2b/0xe0
[ 400.000290] [<c1127fc9>] ? file_free_rcu+0x29/0x30
[ 400.000298] [<c1127fc9>] ? file_free_rcu+0x29/0x30
[ 400.000307] [<c1449e60>] ? dev_watchdog+0x0/0x220
[ 400.000315] [<c105daa9>] ? run_timer_softirq+0xe9/0x1e0
[ 400.000325] [<c1449e60>] ? dev_watchdog+0x0/0x220
[ 400.000334] [<c1056622>] ? __do_softirq+0x82/0x170
[ 400.000343] [<c10565a0>] ? __do_softirq+0x0/0x170
[ 400.000348] <IRQ> [<c10567ed>] ? irq_exit+0x6d/0x80
[ 400.000366] [<c15107ab>] ? do_IRQ+0x4b/0xc0
[ 400.000376] [<c1003670>] ? common_interrupt+0x30/0x38
[ 400.000385] [<c10700d8>] ? do_cpu_nanosleep+0x38/0x1b0
[ 400.000397] [<c12e8db4>] ? arch_local_irq_enable+0x5/0xb
[ 400.000406] [<c12e9a9b>] ? acpi_idle_enter_bm+0x227/0x25e
[ 400.000417] [<c14061fd>] ? cpuidle_idle_call+0x7d/0x160
[ 400.000426] [<c10019ca>] ? cpu_idle+0x8a/0xc0
[ 400.000435] [<c1504a4d>] ? setup_APIC_timer+0x69/0x6d
[ 400.000444] [<c1504591>] ? start_secondary+0xd5/0xdc
[ 400.000451] ---[ end trace e3b12757f18bb53d ]---
[ 400.000456] ipheth: iphe...

[Jeremy Foshee (jeremyfoshee)]

natty has no proposed candidates ergo, this cannot be a regression-proposed bug. Removing the tag.

~JFo

[Ariel Lim (ariellim)]

Why is this marked as duplicate of bug #746717?

bug #746717 is a bug for ubuntu 11.04 Alpha and this bug is reported for ubuntu 11.04 Beta.

bug #746717 does not even mention about iphone tethering connectivity..

This bug shouldn't be related to bug #746717.

Please clarify this..

Please note that this bug is about ipheth involving connectivity of iphone ios 4.3 this is not about ALSA driver nor any audio problem.

Thanks..

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.