Bug 9942

OK, the fact that toggling FAIR_GROUP_SCHED affects it is pretty convincing.

I'm confused about the "net_namespace size 120 bytes" message.  As
far as I can tell the string "net_namespace" does not occur anywhere
in the kernel source.  Where did it come from??

Can you please add the parameter initcall_debug to the kernel boot
command line?  That might tell us more about where it is hanging.

Thanks.

When removing FAIR_GROUP_SCHED, the net_namespace doesn't show up.

googling a bit shows it's related to Network init:
http://www.google.com/search?q=net_namespace+120+bytes&ie=utf-8&oe=utf-8&aq=t&rls=com.mandriva:en-US:official&client=firefox-a

I got it in my kernel at:
./net/core/net_namespace.c #169
Not sure it comes from a 3rd party extension.

I don't have serial port for console logging. So here's the picture:
http://dl.free.fr/iN87PZzZn/snv32453.jpg

So from that output it seems that the machine hung in ksysfs_init().

Greg, Kay: I have a vague idea that this has been reported
before.  Does it look familiar?

Thanks.

No, I've not heard this one before.  Perhaps it's something to do with Eric's namespace changes?

but the machine seems to have hung in ksysfs_init()?

Francois, this sounds like something we'll need to bisect, if you have the time.  There are some instructions at http://www.kernel.org/doc/local/git-quick.html

Rafael, could you please keep an eye on this one for inclusion in the regressions list?

Thanks.

After bisecting many reboots, I couldn't make it hang.
Stock kernel 2.6.25rc1 and 2.6.24.2 works.
I wasn't able to find differences between the releases ./net/ directories.
Anyway, the packaged kernel config shows difference in accepted config options, so they may have been custom patchs anyway.
Marking as invalid here and moving bu to packager's bugzilla.
Thanks

3,4c3,4
< # Linux kernel version: 2.6.24
< # Wed Feb 13 16:08:40 2008
---
> # Linux kernel version: 2.6.24-2mdvtmbcustom_bug
> # Tue Feb 12 22:54:05 2008
197a198
> # CONFIG_I8K is not set
201a203
> CONFIG_BADRAM=y
261a264
> CONFIG_ACPI_CUSTOM_DSDT_INITRD=y
530a534
> CONFIG_IP_NF_MATCH_PSD=m
560a565
> CONFIG_IP_NF_TARGET_IFWLOG=m
564a570
> # CONFIG_IP_NF_SET is not set
1241a1248
> # CONFIG_DM_RAID45 is not set
1498a1506
> # CONFIG_NOZOMI is not set
1895a1904
> # CONFIG_SND_OXYGEN is not set
1931a1941
> # CONFIG_SND_HIFIER is not set
1948a1959
> # CONFIG_SND_VIRTUOSO is not set
1970a1982,1985
> # ALSA SoC audio for Freescale SOCs
> #
>
> #
2212a2228
> # CONFIG_REISER4_FS is not set
2286a2303,2308
> # Layered filesystems
> #
> CONFIG_ECRYPT_FS=m
> # CONFIG_UNION_FS is not set
>
> #
2292d2313
< CONFIG_ECRYPT_FS=m
2312a2334,2336
> CONFIG_SQUASHFS=m
> # CONFIG_SQUASHFS_EMBEDDED is not set
> CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
2529a2554
> CONFIG_CRYPTO_LZF=y
2559a2585,2597
>
> #
> # Unofficial 3rd party kernel additions
> #
> # CONFIG_DRBD is not set
> # CONFIG_IPW3945 is not set
> # CONFIG_ACERHK is not set
> # CONFIG_VIAHSS is not set
> # CONFIG_ACER_ACPI is not set
> # CONFIG_UVC is not set
> CONFIG_QC_USB=m
> CONFIG_NDISWRAPPER=m
> # CONFIG_FSC_BTNS is not set