Ubuntu
linux package

[lucid] wait-for-root: early segmentation fault in libc during startup

Bug #499422 reported by Per Ångström on 2009-12-22

This bug affects 5 people

Affects		Status	Importance	Assigned to	Milestone
	initramfs-tools (Ubuntu)	Fix Released	Undecided	Unassigned
	linux (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

I have upgraded to Lucid Lynx Alpha 1+ and now I see "Segmentation fault" almost immediately on startup. The following is an excerpt from dmesg:

[ 0.996583] alloc kstat_irqs on node -1
[ 0.996599] r8169 0000:02:00.0: irq 29 for MSI/MSI-X
[ 0.997085] eth0: RTL8168c/8111c at 0xffffc90000674000, 00:e0:91:22:df:c0, XI
D 1c2000c0 IRQ 29
[ 1.570051] usb 6-1: new full speed USB device using uhci_hcd and address 2
[ 1.577237] wait-for-root[302]: segfault at 0 ip 00007f52856877c2 sp 00007fffeebc9ac8 error 4 in libc.so.6[7f5285608000+166000]
[ 1.660098] EXT4-fs (sda7): mounted filesystem with ordered data mode
[ 1.818293] usb 6-1: configuration #1 chosen from 1 choice
[ 10.982471] udev: starting version 149

My kernel is 2.6.32-9-generic. It happens every time I boot up. I have updated this system several times since I first saw this, so I it's not a temporary inconsistence.

ProblemType: Bug
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: pang 1724 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfef00000 irq 22'
   Mixer name : 'Realtek ALC262'
   Components : 'HDA:10ec0262,18540120,00100002'
   Controls : 20
   Simple ctrls : 12
Date: Tue Dec 22 12:40:47 2009
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=2a4d2eac-9fba-4760-849b-e366ea52a359
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: LG Electronics P300-T.APE4V
Package: linux-image-2.6.32-9-generic 2.6.32-9.13
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-9-generic root=UUID=01ebab7a-379c-48c8-87d6-a2800f6dccfd ro quiet splash
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-9.13-generic
Regression: Yes
RelatedPackageVersions: linux-firmware 1.28
Reproducible: Yes
SourcePackage: linux
Tags: lucid needs-upstream-testing regression-potential
TestedUpstream: No
Uname: Linux 2.6.32-9-generic x86_64
WifiSyslog: Dec 22 12:33:13 barbaren kernel: [ 360.586271] CE: hpet increasing min_delta_ns to 15000 nsec
dmi.bios.date: 06/30/2008
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: ELGNSF18
dmi.board.name: ELGON
dmi.board.vendor: LG Electronics
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LG Electronics
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrELGNSF18:bd06/30/2008:svnLGElectronics:pnP300-T.APE4V:pvrNotApplicable:rvnLGElectronics:rnELGON:rvrNotApplicable:cvnLGElectronics:ct10:cvrN/A:
dmi.product.name: P300-T.APE4V
dmi.product.version: Not Applicable
dmi.sys.vendor: LG Electronics

Tags:

Related branches

lp:ubuntu/lucid/initramfs-tools

Revision history for this message

Per Ångström (autark) wrote on 2009-12-22:

AlsaDevices.txt Edit (461 bytes, text/plain; charset="utf-8")
AplayDevices.txt Edit (273 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (54.2 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (2.4 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (9.7 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (433 bytes, text/plain; charset="utf-8")
Dependencies.txt Edit (1.2 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (335 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (24.5 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (593 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (1.6 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.9 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (112 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (117.8 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (240.8 KiB, text/plain; charset="utf-8")

Revision history for this message

Russell Green (r.green) wrote on 2009-12-22:

Other people who have confirmed this bug are reporting that this is KMS issue.

Forum thread for reference: http://ubuntuforums.org/showthread.php?t=1359040

Revision history for this message

Andy Whitcroft (apw) wrote on 2009-12-22:

wait-for-root is a new helper for waiting for the device which represents the root partition to appear. This could easily be a bug in that. The various scenarios mentioned in the forum tends to imply its timing related.

Revision history for this message

Steve Magoun (smagoun) wrote on 2009-12-22:

I see the "Segmentation fault" error immediately on boot. It's relatively new, started happening right around the time I fixed the UUIDs of my swap partition in /etc/initramfs-tools/conf.d/resume and /etc/fstab for bug 498485.

I'm running an ancient (2001/2002) SiS graphics card that, to the best of my knowledge, doesn't have any KMS support.

Revision history for this message

Greg A (etulfetulf) wrote on 2009-12-22:

Dec 22 18:56:51 greg-desktop kernel: [ 4.172391] usbhid: v2.6:USB HID core driver
Dec 22 18:56:51 greg-desktop kernel: [ 4.373211] 0000:00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:16:76:ca:3b:a8
Dec 22 18:56:51 greg-desktop kernel: [ 4.373214] 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
Dec 22 18:56:51 greg-desktop kernel: [ 4.373236] 0000:00:19.0: eth0: MAC: 6, PHY: 6, PBA No: 1021ff-0ff
Dec 22 18:56:51 greg-desktop kernel: [ 4.558320] wait-for-root[310]: segfault at 0 ip 00007fb2549237c2 sp 00007fff158abe58 error 4 in libc.so.6[7fb2548a4000+166000]
Dec 22 18:56:51 greg-desktop kernel: [ 4.858427] EXT4-fs (sda4): mounted filesystem with ordered data mode
Dec 22 18:56:51 greg-desktop kernel: [ 9.140620] usb-storage: device scan complete

Scott James Remnant (Canonical) (canonical-scott) on 2009-12-22

Changed in linux (Ubuntu):
status:	New → Invalid

Revision history for this message

Launchpad Janitor (janitor) wrote on 2009-12-22:

This bug was fixed in the package initramfs-tools - 0.92bubuntu62

---------------
initramfs-tools (0.92bubuntu62) lucid; urgency=low

  * src/wait-for-root.c:
    - device records we obtain from udev may not have a device node name
      yet, check to avoid strcmp between NULL and our path. LP: #499422.
    - device records from the queue may not exist at all, check to avoid
      calling udev_device_unref on NULL (which should be safe anyway).
    - eliminate a race condition; by checking the filesystem before the
      queue, there was a small chance that udev could finish processing
      between our calls
-- Scott James Remnant <email address hidden> Tue, 22 Dec 2009 19:30:01 +0000

Changed in initramfs-tools (Ubuntu):
status:	New → Fix Released

Andy Whitcroft (apw) on 2009-12-22

summary:

- [lucid] early segmentation fault in libc during startup
+ [lucid] wait-for-root: early segmentation fault in libc during startup

Revision history for this message

Tom Pino (metalsmith-rangeweb) wrote on 2009-12-22:

I get this too. It is a little starnge because sometimes if I restart at the login and boot again it is gone. Sometimes it is the same.

I have 5 different flavors of 10.04 installed, some clean installs and most upgrades.

Per Ångström (autark) on 2009-12-22

tags:

removed: amd64 needs-upstream-testing

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[lucid] wait-for-root: early segmentation fault in libc during startup

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