Messages in this thread | | | Date | Thu, 21 Aug 2008 12:22:22 +0200 | From | Ingo Molnar <> | Subject | Re: [GIT PULL] time.c - respin |
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* Glauber Costa <gcosta@redhat.com> wrote:
> Ingo, please pull the latest master git tree from: > > git://git.kernel.org/pub/scm/linux/kernel/git/glommer/linux-2.6-x86-integration.git master > > into your tree. It solves a bisectability issue, but I can't, > unfortunately, reproduce the problem you report. So hopefuly you'll > now be able to bisect your problems to a point we can find out what's > going on
i've tried it, and -tip testing found a hang on 64-bit x86.
It hangs here:
[ 0.340029] calling tc_filter_init+0x0/0x4c [ 0.340029] initcall tc_filter_init+0x0/0x4c returned 0 after 0 msecs [ 0.340029] calling genl_init+0x0/0xd8 [ hard hang ]
it should have continued with:
[ 2.976346] initcall genl_init+0x0/0xd8 returned 0 after 15 msecs [ 2.982303] calling cipso_v4_init+0x0/0x88 [ ... etc ... ]
i've bisected the hang back to:
0de577d0dd2d1101431d3438d0880fa32a6188d6 is first bad commit commit 0de577d0dd2d1101431d3438d0880fa32a6188d6 Author: Glauber Costa <gcosta@redhat.com> Date: Fri Jul 11 15:43:19 2008 -0300
x86: use generic intr_init call
Replace apic initialization code with generic intr_init_hook().
Signed-off-by: Glauber Costa <gcosta@redhat.com>
the config is at:
http://redhat.com/~mingo/misc/config-Thu_Aug_21_11_14_36_CEST_2008.bad
but the bug is rather obvious:
- apic_intr_init(); - - if (!acpi_ioapic) - setup_irq(2, &irq2); + intr_init_hook();
why exactly did you remove the cascade IRQ registration? If it remains unallocated and a driver happens to use it funny things might occur.
Also, the commit log does not declare why it's removed.
Ingo
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