Re: [-rc7 regression] Block IO/VFS/ext3/timer spinlock lockup?

From: Thomas Gleixner
Date: Thu Feb 14 2013 - 12:28:38 EST


On Thu, 14 Feb 2013, Ingo Molnar wrote:
> * Ingo Molnar <mingo@xxxxxxxxxx> wrote:
>
> > > CPU0 appears to be idle:
> > >
> > > [ 118.510000] Call Trace:
> > > [ 118.510000] [<7900844b>] cpu_idle+0x86/0xb4
> > > [ 118.510000] [<792a91df>] rest_init+0x103/0x108
> > > [ 118.510000] [<794558cc>] start_kernel+0x2c7/0x2cc

Weird.

> > So, I've done a partial bisection, the breakage appears to have
> > gone upstream between v3.8-rc3 and v3.8-rc4.
>
> these three:
>
> 10d73e655cef mm: bootmem: fix free_all_bootmem_core() with odd bitmap alignment
> c060f943d092 mm: use aligned zone start for pfn_to_bitidx calculation
> c0232ae861df mm: memblock: fix wrong memmove size in memblock_merge_regions()
>
> might have highmem=512m boot parameter sensitivity.

Is highmem=512 the boot parameter which makes it come and go ?

Thanks,

tglx
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