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SubjectRe: PATCH -RCU locking on last_VFP_context[cpu] in vfp_notifier [2.6.32]
On Mon, Aug 11, 2014 at 06:12:35PM -0700, Sadasivan Shaiju wrote:
> Hi Russell,
>
> Thanks for looking into the issue.
>
> This issue came up when I was doing econa (ARM) board bringup
> for Montavista (cavium) .
> Following was the bug description .
>
> Using cge60-econa-cns3420-2.6.32_110928_1104937 the kernel failed to
> boot with
> the following error:
>
> Internal error: Oops: 817 [#1] from cpu 1 PREEMPT SMP
> last sysfs file: /sys/devices/virtual/bdi/0:19/uevent
> Modules linked in: hmac ctr deflate
> CPU: 1 Tainted: G W (2.6.32.46.cge #1)
> PC is at vfp_notifier+0x48/0xbc
> LR is at vfp_notifier+0x44/0xbc
> pc : [] lr : [] psr: 60000013
> sp : aeee1d30 ip : aeee1d50 fp : aeee1d4c
> r10: af8d6460 r9 : ffffffff r8 : af88c000
> r7 : a05ba584 r6 : af88c000 r5 : 00000001 r4 : 40000000
> r3 : 00000000 r2 : 00000000 r1 : 40000000 r0 : aeee0230
> Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
> Control: 00c5787d Table: 2eeec00a DAC: 00000017
> Process grep (pid: 1710, stack limit = 0xaeee0270)
> Stack: from cpu 1 (0xaeee1d30 to 0xaeee2000)
>
>
> During the bring up I used to intract with Catalin Marinas(
> Catalin.Marinas@arm.com)from ARM . He is copied on the email .
> Catalin has pointed out the following patch to me , which
> solved my problem . I just want to make sure the patch goes to
> mainline kernel.

All you've done is re-quoted the same information you supplied in your
initial email with nothing new. Therefore, you are wasting my time,
and I really can't be bothered with time wasters.

Since you seem to be totally incapable of analysing the problem
correctly, and I know very little about RT kernels, there's nothing
I can do here. Sorry.

--
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.


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