Messages in this thread | | | Date | Sat, 23 Dec 2017 14:32:52 +0100 (CET) | From | Thomas Gleixner <> | Subject | RE: PROBLEM: 4.15.0-rc3 APIC causes lockups on Core 2 Duo laptop |
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On Sat, 23 Dec 2017, Dexuan Cui wrote:
> > From: Alexandru Chirvasitu [mailto:achirvasub@gmail.com] > > Sent: Friday, December 22, 2017 14:29 > > > > The output of that precise command run just now on a freshly-compiled > > copy of that commit is attached. > > > > On Fri, Dec 22, 2017 at 09:31:28PM +0000, Dexuan Cui wrote: > > > > From: Alexandru Chirvasitu [mailto:achirvasub@gmail.com] > > > > Sent: Friday, December 22, 2017 06:21 > > > > > > > > In the absence of logs, the best I can do at the moment is attach a > > > > picture of the screen I am presented with on the apic=debug boot > > > > attempt. > > > > Alex > > > > > > The panic happens in irq_matrix_assign_system+0x4e/0xd0 in your picture. > > > IMO we should find which line of code causes the panic. I suppose > > > "objdump -D kernel/irq/matrix.o" can help to do that. > > > > > > Thanks, > > > -- Dexuan > > The BUG_ON panic happens at line 147: > BUG_ON(!test_and_clear_bit(bit, cm->alloc_map)); > > I'm sure Thomas and Dou know it better than me.
I'll have a look after the holidays.
Thanks,
tglx
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