XBMC hangs with 100% cpu utilization when accessing nfs shares

[Bharath Ramesh]

When using NFS shares through XBMC using libnfs XBMC hangs utilizing 100% CPU. The issue is related to the version of libnfs that is compatible with XBMC v11.0.

Some details can be found in the following thread http://forum.xbmc.org/showthread.php?tid=140703

[Bharath Ramesh (krosswindz)]

I am sorry I forgot to mention I am using precise.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alek Kowalczyk (alek-kowalczyk)]

I confirm the bug on quantal.

xbmc 2:11.0~git20120510.82388d5-1ubuntu2
libnfs1:i386 1.3.0-2
libnfsidmap2 0.25-1ubuntu3
nfs-common 1:1.2.6-3ubuntu2
nfs-kernel-server 1:1.2.6-3ubuntu2

Trying to access NFS video file from a NFS share on the same computer

The stacktrace from gdb attached to the xbmc.bin below

#0 0xb7778424 in __kernel_vsyscall ()
#1 0xb6b315a2 in __lll_lock_wait () from /lib/i386-linux-gnu/libpthread.so.0
#2 0xb6b2cebb in _L_lock_764 () from /lib/i386-linux-gnu/libpthread.so.0
#3 0xb6b2cd75 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#4 0x087b9a52 in CNfsConnection::AddActiveConnection() ()
#5 0x087b9b2a in XFILE::CFileNFS::CFileNFS() ()
#6 0x08721a15 in XFILE::CFileFactory::CreateLoader(CURL const&) ()
#7 0x08713e3d in XFILE::CFile::Exists(CStdStr<char> const&, bool) ()
#8 0x089f03d2 in CFileItem::Exists(bool) const ()
#9 0x089f031f in CFileItem::Exists(bool) const ()
#10 0x082cdb08 in CGUIWindowVideoNav::OnClick(int) ()
#11 0x082bddf5 in CGUIWindowVideoBase::OnFileAction(int, int) ()
#12 0x082be23c in CGUIWindowVideoBase::OnResumeItem(int) ()
#13 0x082bdf4b in CGUIWindowVideoBase::OnFileAction(int, int) ()
#14 0x082bf405 in CGUIWindowVideoBase::OnSelect(int) ()
#15 0x089a7679 in CGUIMediaWindow::OnMessage(CGUIMessage&) ()
#16 0x082be303 in CGUIWindowVideoBase::OnMessage(CGUIMessage&) ()
#17 0x082ceaac in CGUIWindowVideoNav::OnMessage(CGUIMessage&) ()
#18 0x084595b8 in CGUIControl::SendWindowMessage(CGUIMessage&) ()
#19 0x0844c50f in CGUIBaseContainer::OnClick(int) ()
#20 0x0844f21b in CGUIBaseContainer::OnMouseEvent(CPoint const&, CMouseEvent const&) ()
#21 0x0845847d in CGUIControl::SendMouseEvent(CPoint const&, CMouseEvent const&) ()
#22 0x08466c91 in CGUIControlGroup::SendMouseEvent(CPoint const&, CMouseEvent const&) ()
#23 0x08466c91 in CGUIControlGroup::SendMouseEvent(CPoint const&, CMouseEvent const&) ()
#24 0x08466c91 in CGUIControlGroup::SendMouseEvent(CPoint const&, CMouseEvent const&) ()
#25 0x084cb608 in CGUIWindow::OnMouseAction(CAction const&) ()
#26 0x084cb6a4 in CGUIWindow::OnAction(CAction const&) ()
#27 0x089a25dc in CGUIMediaWindow::OnAction(CAction const&) ()
#28 0x082b9d86 in CGUIWindowVideoBase::OnAction(CAction const&) ()
#29 0x082ca50a in CGUIWindowVideoNav::OnAction(CAction const&) ()
#30 0x084d10bd in CGUIWindowManager::OnAction(CAction const&) ()
#31 0x089cfa52 in CApplication::OnAction(CAction const&) ()
#32 0x089d0a77 in CApplication::ProcessMouse() ()
#33 0x089d22a5 in CApplication::OnEvent(XBMC_Event&) ()
#34 0x0899e3f0 in CWinEventsSDL::MessagePump() ()
#35 0x089d3071 in CApplication::FrameMove(bool) ()
#36 0x08a54668 in CXBApplicationEx::Run() ()
#37 0x0825020a in main ()