Vaclav Slavik schrieb:
> Hi again,
>
> another reply with a bit more information:
>
> Denis Oliver Kropp wrote:
>>> (!) [ 1076: 19.429] --> Caught signal 4 (at 0xbe826a2c, illegal
>>> trap) <--
If 0xbe826a2c is the intruction pointer you should be able to find
out which function it is in.
>>> (!) FUSION_PROPERTY_LEASE --> Connection timed out
Most likely due to the clock skew, or a dead lock. Do you know if there
was a feelable delay between this and the previous message?
>>> (!) [ 1076: 19.521] --> Caught signal 11 (at (nil), invalid
>>> address) <--
>>> Killed
>> Do you also have kernel messages regarding this?
>
> No, just tons of messages like "Fusion: fusion_ioctl (0x40040403)".
#if 0 <-=
#define DEBUG(x...) printk (KERN_DEBUG "Fusion: " x)
#else
#define DEBUG(x...) do {} while (0)
#endif
You might want to set it back to "0" for performance reasons.
>>> Unfortunately, using no-vt-switching doesn't help much: we don't
>>> get that assumption failure above, but the app still receives
>>> SIGILL (on resume this time), with useless gdb backtrace.
>> Please build with "--enable-trace" that maintains a copy of the
>> call stack and therefore even helps if you have stack corruption.
>
> It didn't help, the stack was too corrupted for DFB's code too.
>
> We found out that the app produces SIGILL when any signal is sent to
> it after resume. Furthermore, the vt_thread receives an unexpected
> signal when suspending:
>
> (-) [VT Switcher 187.483] ( 1122) DirectFB/core/layers: suspended.
> (-) [VT Switcher 187.483] ( 1122) DirectFB/core/screens:
> suspending...
> (-) [VT Switcher 187.484] ( 1122) DirectFB/core/screens:
> suspended.
> (-) [VT Switcher 187.487] ( 1122) FBDev/VT: ...vt_thread
> (signal -1)
The -1 just indicates that the vt_thread() loop is waiting for signals
again.
--
Best regards,
Denis Oliver Kropp
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| http://www.directfb.org/ |
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