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From:	jojelino <jojelino AT gmail DOT com>
Subject:	Re: deadlock with busy waiting on sigfe
Date:	Mon, 11 Mar 2013 17:53:50 +0900
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On 2013-01-20 PM 3:54, Christopher Faylor wrote:
> On Sun, Jan 20, 2013 at 02:23:23PM +0900, jojelino wrote:
> Once again: don't care about your backtraces.  Submit a proper bug report.
>
> cgf
>
And found another livelock with CYGWIN_NT-5.2 F8G6S6D42HGDY4 
1.7.18s(0.263/5/3) 20130309 21:57:01 i686 Cygwin provided in 
http://cygwin.org/snapshots/cygwin1-20130309.dll.bz2
I can't submit proper bug report. it just hangs during CTRL+C for 
arbitrary cygwin executable and there is nothing i can do except dumping 
backtrace. If you don't care about it, it's ok to ignore this. please 
pass by.
Thread 2 (Thread 7596.0x104):
#0  0x7c96845c in ntdll!KiFastSystemCallRet ()
    from /cygdrive/c/WINDOWS/system32/ntdll.dll
#1  0x7c9678c9 in ntdll!ZwSetInformationThread ()
    from /cygdrive/c/WINDOWS/system32/ntdll.dll
#2  0x7c8324f9 in SetThreadPriority ()
    from /cygdrive/c/WINDOWS/system32/kernel32.dll
#3  0x6108790d in yield ()
     at 
/netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/miscfuncs.cc:253
#4  0x610d7354 in _cygtls::lock() () from /usr/bin/cygwin1.dll
#5  0x6103096e in sigpacket::setup_handler (this=0x6aac34,
     handler=0x6102fe00 <signal_exit(int, siginfo_t*)>, siga=..., 
tls=0x22ce64)
     at 
/netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/exceptions.cc:796
#6  0x610318ff in sigpacket::process (this=0x6aac34)
     at 
/netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/exceptions.cc:1245
---Type <return> to continue, or q <return> to quit---
#7  0x610dd74c in wait_sig ()
     at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/sigproc.cc:1389
#8  0x61003ea5 in cygthread::callfunc (this=0x6118b420 <threads>,
     issimplestub=<optimized out>)
     at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygthread.cc:51
#9  0x6100442f in cygthread::stub (arg=0x6118b420 <threads>)
     at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygthread.cc:93
#10 0x6100537d in _cygtls::call2 (this=<optimized out>,
     func=0x610043e0 <cygthread::stub(void*)>, arg=0x6118b420 <threads>,
     buf=0x6100551b <_cygtls::call(unsigned long (*)(void*, void*), 
void*)+91>)
     at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygtls.cc:99
#11 0x006affb8 in ?? ()
#12 0x7c82484f in KERNEL32!GetModuleHandleA ()
    from /cygdrive/c/WINDOWS/system32/kernel32.dll
#13 0x00000000 in ?? ()

Thread 1 (Thread 7596.0x190):
#0  0x7c96845c in ntdll!KiFastSystemCallRet ()
    from /cygdrive/c/WINDOWS/system32/ntdll.dll
#1  0x7c9678c9 in ntdll!ZwSetInformationThread ()
    from /cygdrive/c/WINDOWS/system32/ntdll.dll
#2  0x7c8324f9 in SetThreadPriority ()
    from /cygdrive/c/WINDOWS/system32/kernel32.dll
#3  0x610878cb in yield ()
---Type <return> to continue, or q <return> to quit---
     at 
/netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/miscfuncs.cc:244
#4  0x610d7354 in _cygtls::lock() () from /usr/bin/cygwin1.dll
#5  0x61031297 in _cygtls::call_signal_handler (
     this=0x610d7354 <_cygtls::lock()+23>)
     at 
/netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/exceptions.cc:1265
#6  0x61007689 in _cygwin_exit_return ()
     at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/dcrt0.cc:1012
#7  0x6100537d in _cygtls::call2 (this=<optimized out>,
     func=0x61006c50 <dll_crt0_1(void*)>, arg=0x0,
     buf=0x6100551b <_cygtls::call(unsigned long (*)(void*, void*), 
void*)+91>)
     at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygtls.cc:99
#8  0x0022ff78 in ?? ()
#9  0x004011d2 in ?? ()
#10 0x00401015 in ?? ()
#11 0x7c82f243 in ProcessIdToSessionId ()
    from /cygdrive/c/WINDOWS/system32/kernel32.dll

-- 
Regards.


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