[stgt] help tgt segfault

[Tomasz Chmielewski]

Tomasz Chmielewski schrieb:
> FUJITA Tomonori schrieb:
> 
>> +9 but I'm not sure how the timezone works on kernel.org. Can you
>> please try v0.9.3?
> 
> Yes, I can confirm it still segfaults with 0.9.3, i.e.:
> 
> Jan 14 20:35:23 san1 kernel: tgtd[7191]: segfault at 8 rip 40ef3d rsp 
> 7fff3436cd90 error 6
> Jan 14 21:43:38 san1 kernel: tgtd[26185]: segfault at 8 rip 40f07d rsp 
> 7fffea30e340 error 6
> Jan 14 21:48:34 san1 kernel: tgtd[27968]: segfault at 8 rip 40f07d rsp 
> 7fff1ecea3d0 error 6
> Jan 14 22:07:10 san1 kernel: tgtd[29052]: segfault at 8 rip 40f07d rsp 
> 7fffcf29bca0 error 6
> Jan 14 22:09:20 san1 kernel: tgtd[29928]: segfault at 8 rip 40f07d rsp 
> 7fff8148bef0 error 6
> Jan 14 22:18:45 san1 kernel: tgtd[30836]: segfault at 8 rip 40f07d rsp 
> 7fff5dc19680 error 6
> Jan 14 22:24:49 san1 kernel: tgtd[31854]: segfault at 8 rip 40f07d rsp 
> 7fff3d6750e0 error 6
> Jan 14 22:25:59 san1 kernel: tgtd[325]: segfault at 8 rip 40f07d rsp 
> 7fff724def40 error 6
> Jan 14 22:29:19 san1 kernel: tgtd[1210]: segfault at 8 rip 40f07d rsp 
> 7fff1d618080 error 6
> Jan 14 22:54:40 san1 kernel: tgtd[2166]: segfault at 8 rip 40f07d rsp 
> 7fffc12f5d60 error 6
> 
> I'm not sure how to reproduce it reliably... Anyone out there using DRBD?
> 
> If you could provide me some "debug" version of tgtd, maybe?

Although these statistics are not very detailed, these crashes occur when
iowait is bigger then usually:

07:55:01 PM       CPU     %user     %nice   %system   %iowait    %steal     %idle
08:25:01 PM       all      0.32      0.00      0.73      9.24      0.00     89.70
08:35:23 PM       all      0.33      0.00      0.95     16.52      0.00     82.20
08:45:01 PM       all      0.45      0.00      2.00     16.84      0.00     80.70
08:55:01 PM       all      0.67      0.00      3.90     36.32      0.00     59.11
09:05:01 PM       all      0.88      0.00      6.48     48.97      0.00     43.68
09:15:01 PM       all      0.79      0.00      6.28     39.08      0.00     53.85
09:25:01 PM       all      0.64      0.00      4.26     28.26      0.00     66.84
09:35:01 PM       all      0.73      0.00      4.81     40.54      0.00     53.91
09:45:02 PM       all      0.43      0.00      2.17     39.48      0.00     57.92
09:55:01 PM       all      0.44      0.00      2.58     81.81      0.00     15.17
10:05:01 PM       all      0.23      0.00      0.52     73.44      0.00     25.81
10:15:01 PM       all      0.59      0.00      3.73     52.74      0.00     42.94
10:25:02 PM       all      0.38      0.00      2.35     72.24      0.00     25.02
10:35:01 PM       all      0.44      0.00      3.85     54.17      0.00     41.54
10:45:01 PM       all      0.40      0.00      1.89     78.22      0.00     19.48
10:55:02 PM       all      0.29      0.00      1.52     51.63      0.00     46.56
11:05:01 PM       all      0.31      0.00      0.99     19.84      0.00     78.86
11:15:01 PM       all      0.30      0.00      0.61      1.17      0.00     97.91



-- 
Tomasz Chmielewski
http://wpkg.org
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