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[vdr] segmentation fault in select() from cFile::FileReady()
- To: vdr@linuxtv.org
- Subject: [vdr] segmentation fault in select() from cFile::FileReady()
- From: huels@iname.com (Stefan Huelswitt)
- Date: 27 Oct 2001 18:34:53 GMT
- Content-Type: text/plain; charset=us-ascii
- Delivered-To: mhonarc@limes.convergence.de
- Newsgroups: local.linux.vdr
- Organization: Home, sweet home
- Reply-to: vdr@linuxtv.org
- Sender: vdr-bounce@linuxtv.org
Hi,
in either vdr 0.96 and 0.97 if had nummerous crashes. Backtrace
with gdb indicates that the crash happens inside select():
(gdb) bt
#0 0x401dc95e in __select () from /lib/libc.so.6
#1 0xbdffba34 in ?? ()
#2 0x804f91f in Input__13cRecordBuffer (this=0x40700c20) at dvbapi.c:564
#3 0x808488b in Action__22cRingBufferInputThread (this=0x4075e150)
at ringbuffer.c:22
#4 0x806de3e in StartThread__7cThreadP7cThread (Thread=0x4075e150)
at thread.c:118
#5 0x4008bca3 in pthread_start_thread () from /lib/libpthread.so.0
(gdb) list dvbapi.c:564
559 if (time(NULL) - t > MAXBROKENTIMEOUT) {
560 esyslog(LOG_ERR, "ERROR: video data stream broken");
561 cThread::EmergencyExit(true);
562 t = time(NULL);
563 }
564 cFile::FileReady(videoDev, 100);
565 if (!recording)
566 break;
567 }
568
Stack frame #1 should have been a reference to FileReady() but
appearently something has trashed the stack. Right?
I had the same crash inside select() from the LIRC thread calling
cFile::FileReady(), too.
Can't see a reason for this. Or is cFile::FileReady() not thread
save?
--
Stefan Huelswitt
huels@iname.com | http://home.pages.de/~nathan
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