Re: [Valgrind-users] valgrind hangs my app on oldselect call

[Julian S. <js...@ac...>]

Known problem .. under consideration.  See Q10 of
http://developer.kde.org/~sewardj/docs-1.9.5/FAQ.txt

J


On Thursday 24 April 2003 11:34 pm, Sergio Ito wrote:
> Hi all,
>
> first I'd like to say that valgrind is one of most
> amazing tools I already used. Thanks for making it
> such a great tool.
>
> I got some problems when my system was upgraded to red
> hat 8.0 and we migrated to gcc 3.2.2 + valgrind-1.9.5.
> I have a multithread app and it hangs somewhere
> calling oldselect... strace gave this:
>
> fcntl(13, F_GETFL)                      = 0x801 (flags
> O_WRONLY|O_NONBLOCK)
> write(13, "MTclChannel FOPEN_MAX=16\nMTclCha"..., 57)
> = 57
> fcntl(13, F_GETFL)                      = 0x801 (flags
> O_WRONLY|O_NONBLOCK)
> fcntl(13, F_SETFL, O_WRONLY)            = 0
> oldselect(19, [17 18], NULL, NULL, NULL
>
>
> and, pstack generated this:
>
> 0x4018ccde: vgPlain_post_known_blocking_syscall +
> 0x20f (12, 4528d4c0, 0, 0, 0)
> 0x40176563: __select + 0x2d (12, 4528d4c0, 0, 0, 0, 0)
> + 1030
> 0x09b6a02f: _ZN11MTclChannel18shellCmdEventLoop_Ev +
> 0x12f (4528afa8, 9b69ee0)
> 0x09b69ef1: _ZN11MTclChannel21runShellCmdEventLoop_EPv
> + 0x11 (4528afa8, 0, 0, 0, 0, 0) + 18
> 0x4026b822: thread_wrapper + 0xad (4528b040, 0, 0, 0,
> 0, 0) + 789cc224
> 0x4016583e: do__apply_in_new_thread_bogusRA (4528afd0,
> bfffc240, b0b0c60, 45287808, 452877d4, 45287798) + 40
> 0x09b69d23:
> _ZN11MTclChannel4initEP10Tcl_InterpRN4_STL13basic_ostreamIcNS2_11char_trait
>sIcEEEES7_ + 0x1c3 (b0b0c20, b0b0c60, b0b0c60, 4527c31c,
> 45269e44, 1) + 10
>
> valgrind-1.0.4 on red hat 7.2 was working properly.
>
> Any ideas??
>
> Sergio
>
>
>
>
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