On Fri, 16 Oct 2015 09:16:04 +0200, David Henningsson wrote: > > (Adding pulseaudio-discuss to CC) > > On 2015-10-15 16:26, Takashi Iwai wrote: > > Hi David, > > > > we got bug reports with PA 7.0 where the recent KDE crashes. > > It seems that srbchannel=no works around it, so there is still > > something fishy there. > > > > The bug report is found at > > http://bugzilla.opensuse.org/show_bug.cgi?id=950487 > > Hi Takashi and thanks for reporting. > > I've tried running PA 7.0's pactl under valgrind, and it reports no > errors here. Still, looking at the one of the backtraces the value of f > is something interesting: > > #6 flush (f=f at entry=0x4545454545454545) at pulsecore/fdsem.c:143 > #7 0x00007fe30f378fc2 in pa_fdsem_before_poll (f=0x4545454545454545) at > pulsecore/fdsem.c:295 > #8 0x00007fe30f38f697 in srbchannel_rwloop (sr=0x25bdd40) at > pulsecore/srbchannel.c:203 > > Does 0x4545454545454545 mean anything specific on OpenSUSE? (Like, a > magic clear value or something?) I don't think it's openSUSE specific. It's likely the guard put by either gcc or glibc. FWIW, we pass the default optimization flags like: CFLAGS=-fmessage-length=0 -grecord-gcc-switches -O2 -Wall \ -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables \ -fasynchronous-unwind-tables -g -fPIE The problem was reported from both gcc-4.8 and gcc-5.x systems, so the gcc version is likely irrelevant. > Also, are there any distro patches to OpenSUSE and if so, where can I > find them? No, there is no patches apparently relevant with this. Actually there are three patches, one is to check an additional environment check in start-pulseaudio-x11, another is to suppress an error log at sockaddr_prepare(), and the last is a fix in memset() size in echo-cancel/adrian-aec.c. But all these should be safe. All sources, patches, build log and binaries are found in OBS, e.g. at https://build.opensuse.org/package/show/multimedia:libs/pulseaudio thanks, Takashi
