I, or rather smb :) was wondering what could still be mounted that would
prevent an overmount, so I added another debug output, that of `mount`
right after `mount -n -o move /dev ${rootmnt}/dev`:
Begin: Running /scripts/init-bottom ... rootfs on / type rootfs (rw)
sysfs on /sys type sysfs
There was a concern that udev is still running at this point, so I added a `ps`
right after `udevadm control --timeout=61 --exit` and the result is this:
Begin: Running /scripts/local-bottom ... done.
done.
Begin: Running /scripts/init-bottom ... PID USER VSZ STAT COMMAND
At this point there seem to be /proc, /sys and /run still under /. For
/proc and /sys, there is code to move the mount to /root in /usr/share
/initramfs-tools/init. This has also the chain call into run-init which
seems to do the final move...
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Someone with the necessary privileges should update the summary: this
bug really doesn't have anything to do with the ec2 kernel, nor with
system_call_fastpath.
run-init: nuking initramfs contents: directory not empty seems more
appropriate.
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I upgraded my system from natty yesterday in hope it would fix a hang
during boot:
[2.108903] md: multipath personality registered for level -4
done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ...
I added udevadm settle before the line udevadm control --timeout=61
--exit. Nothing changes, still crashing:
[1.172059] Refined TSC clocksource calibration: 3411.530 MHz.
[1.172703] md: multipath personality registered for level -4
done.
Begin: Running
On my laptop, it's now reproducible on *every* boot!
If I start with break=bottom, manually move all the mountpoints to /root
and then call run-init by hand, I get the same error:
run-init: nuking initramfs contents: directory not empty
The remaining files are: /dev/console, /var/initramfs,
We sporadically also see similar symptoms to this bug and #610107. I
think they're also connected and both caused by killing udev in the
middle of its operation. The huge number of similar bugs makes me think
this is not the best idea even when it gives us 2 or 3 seconds less of
boot time.
@Stefan: this also affects Lucid. Is it going to get the fix also?
Bugs 573615, 581566 and 155689 also describe similar symptoms.
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https://bugs.launchpad.net/bugs/613273
Title:
kernel
This problem seemed to have intensified for me in my test system in
Oneiric and we were finally able to track it down to /usr/share
/initramfs-tools/scripts/init-bottom/udev. In there the boot process
tries to stop udevd and then move all the special filesystems (/dev,
/proc, and /sys) over to the
This has been fixed for Oneiric by udev-171-0ubuntu4.
** Also affects: udev (Ubuntu)
Importance: Undecided
Status: New
** Also affects: initramfs-tools (Ubuntu Maverick)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Maverick)
Importance: Undecided
Though it is part of /usr/share/initramfs-tools, the scripts/init-
bottom/udev is part of the udev package.
** Changed in: initramfs-tools (Ubuntu)
Status: Triaged = Invalid
** Changed in: initramfs-tools (Ubuntu Maverick)
Status: New = Invalid
** Changed in: initramfs-tools
** Changed in: initramfs-tools (Ubuntu)
Importance: Undecided = Medium
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Title:
kernel panic on ec2 in system_call_fastpath
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** Changed in: initramfs-tools (Ubuntu)
Status: New = Triaged
** Changed in: linux (Ubuntu)
Status: Confirmed = Triaged
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Title:
removed deprecated regression tag.
~JFo
** Tags removed: regression-potential
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Title:
kernel panic on ec2 in system_call_fastpath
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** Tags added: regression-release
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Title:
kernel panic on ec2 in system_call_fastpath
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** Also affects: initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
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Title:
kernel panic on ec2 in system_call_fastpath
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The kernel panic is a result of init exiting, which likely isn't a
kernel issue. From the logs it looks like run-init is bailing because it
can't delete something in the initramfs when switching to the real root
fs.
I think this is more likely an initramfs issue than a kernel issue.
Adding
** Tags added: server-mro
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kernel panic on ec2 in system_call_fastpath
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I seem to be seeing this more and more. I've seen similar traces in the
t1.micro logs without crash. Moving it to medium.
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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kernel panic on ec2 in system_call_fastpath
https://bugs.launchpad.net/bugs/613273
You received this bug
I saw this again today on ubuntu-maverick-daily-amd64-server-20100914 instance
size m1.large with kernel
$ dpkg-query --show linux-image-2.6.35-20-virtual
linux-image-2.6.35-20-virtual 2.6.35-20.29
** Changed in: linux (Ubuntu)
Status: New = Confirmed
--
kernel panic on ec2 in
** Attachment added: console of crash
http://launchpadlibrarian.net/53021216/console.i-35022667.txt
** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/53021117/BootDmesg.txt
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/53021118/Dependencies.txt
**
** Tags added: iso-testing
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kernel panic on ec2 in system_call_fastpath
https://bugs.launchpad.net/bugs/613273
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