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SubjectRe: BUG: soft lockup with 3.7.0 but not 3.6.10
On Tue, Dec 11, 2012 at 20:16:47, Borislav Petkov wrote:
> What family is that? Can you give /proc/cpuinfo?

processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 107
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4000+
stepping : 1
cpu MHz : 1000.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch lbrv
bogomips : 2004.56
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 107
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4000+
stepping : 1
cpu MHz : 1000.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch lbrv
bogomips : 2004.56
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

>> Dec 11 16:02:15 pervalidus kernel: [11260.096015] BUG: soft lockup -
>> CPU#1 stuck for 22s! [cc1:20906]
>
> Hmm, this says that gcc gets stuck at some point. Is this always
> reproducible on 3.7?

It always happens when I compile MPlayer. It was always cc1, but yasm
once.

>> What about using another version of gcc, can you repro it then too?
>>
>> It would be interesting to know where all those cc1 processes get
>> stuck.
>> Can you break into them with gdb and dump the code around RIP
>> everytime those tasks gets stuck? Try doing a couple of them to see
>> whether it is repeatable.

I'll see what I can do. I'm compiling with -j3, so it's hard to see
before the kernel reports it.


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