Re: [Xenomai-core] rare brokenness in latency output - FPU bug!

[Jeff Webb <jeff.webb@domain.hid>]

Jan Kiszka wrote:
> Uhh, wait! I just fired up switchtest on the same box:
> ...
> Gilles, what info do you need? It's all the latest on x86 here:
> 2.6.17.13 (.config attached), ipipe-1.4, SVN #1646, gcc4.1.0.
> 
> Jan

I get a similar result here with xenomai-2.2.3, 2.6.17.13, x86 SMP (see below).  No seg fault, though.

-Jeff


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== Testing FPU check routines...
r0: 1 != 2
r1: 1 != 2
r2: 1 != 2
r3: 1 != 2
r4: 1 != 2
r5: 1 != 2
r6: 1 != 2
r7: 1 != 2
== FPU check routines: OK.
== Threads: sleeper_ufps0-0 rtk0-1 rtk0-2 rtk_fp0-3 rtk_fp0-4 rtk_fp_ufpp0-5 rtk_fp_ufpp0-6 rtup0-7 rtup0-8 rtup_ufpp0-9 rtup_ufpp0-10 rtus0-11 rtus0-12 rtus_ufps0-13 rtus_ufps0-14 rtuo0-15 rtuo0-16 rtuo_ufpp0-17 rtuo_ufpp0-18 rtuo_ufps0-19 rtuo_ufps0-20 rtuo_ufpp_ufps0-21 rtuo_ufpp_ufps0-22 sleeper_ufps1-0 rtk1-1 rtk1-2 rtk_fp1-3 rtk_fp1-4 rtk_fp_ufpp1-5 rtk_fp_ufpp1-6 rtup1-7 rtup1-8 rtup_ufpp1-9 rtup_ufpp1-10 rtus1-11 rtus1-12 rtus_ufps1-13 rtus_ufps1-14 rtuo1-15 rtuo1-16 rtuo_ufpp1-17 rtuo_ufpp1-18 rtuo_ufps1-19 rtuo_ufps1-20 rtuo_ufpp_ufps1-21 rtuo_ufpp_ufps1-22
r0: 2147483648 != 10
r1: 2147483648 != 10
r2: 2147483648 != 10
r3: 2147483648 != 10
r4: 2147483648 != 10
r5: 2147483648 != 10
r6: 2147483648 != 10
r7: 39868544 != 10
Error after context switch from task 8(rtup1-8) to task 10(rtup_ufpp1-10),
FPU registers were set to 39868544 (maybe task ???)
RTT|  00:00:00
RTH|---------cpu|ctx switches|-------total
RTD|           0|          23|          23
RTD|           1|          28|          28