Package: firefox
Version: 87.0-1
Severity: normal
Dear Maintainer,
After upgrading to Firefox 87, I've sometimes seen one of the firefox
contentproc consumes 100% CPU usage indefinitely after start. Killing that
process appears to terminate all of the extensions, and firefox goes back
to normal by reenabling them in "Add-ons Manager" page.
This problem doesn't always occur. I have 3 extensions enabled, which were
installed from the apt repository:
webext-privacy-badger
webext-treestyletab
webext-ublock-origin-firefox
If I disabled one of them, the problem became less likely to occur:
(On Wayland)
enabled extensions reproduced / trials
--------------------------------------------- -------------------
privacy-badger 0 / 30
treestyletab 0 / 30
ublock-origin 4 / 30
privacy-badger + treestyletab 4 / 30
privacy-badger + treestyletab + ublock-origin 21 / 30
Step to reproduce (on Wayland):
$ mkdir /tmp/home
$ HOME=/tmp/home MOZ_ENABLE_WAYLAND=1 firefox
... close firefox and rerun ...
The above number is on Wayland. The compositor is Sway. On XWayland, the
problem occurs less frequently, but I have no idea why.
(On XWayland)
enabled extensions reproduced / trials
--------------------------------------------- -------------------
privacy-badger + treestyletab + ublock-origin 2 / 90
Step to reproduce (on XWayland):
$ mkdir /tmp/home
$ (unset WAYLAND_DISPLAY; unset MOZ_ENABLE_WAYLAND; HOME=/tmp/home firefox)
... close firefox and rerun ...
Stack trace of the contentproc doesn't provide much information. It looks like
the event loop is spinning indefinitely because new events came in.
(gdb) attach 3818
(gdb) bt
#0 __libc_write (nbytes=1, buf=0x7ffe3ca91717, fd=9) at
../sysdeps/unix/sysv/linux/write.c:26
#1 __libc_write (fd=9, buf=buf@entry=0x7ffe3ca91717, nbytes=nbytes@entry=1) at
../sysdeps/unix/sysv/linux/write.c:24
#2 0x00007fc5cde7790b in nsAppShell::ScheduleNativeEventCallback()
(this=<optimized out>) at ./widget/gtk/nsAppShell.cpp:244
#3 0x00007fc5cde0fcc1 in non-virtual thunk to
nsBaseAppShell::OnDispatchedEvent() () at
./build-browser/dist/include/nsTSubstring.h:1344
#4 0x00007fc5cb5f5de4 in
mozilla::TaskController::EnsureMainThreadTasksScheduled() (this=0x7fc5c85f0090)
at ./xpcom/threads/TaskController.cpp:918
#5 mozilla::TaskController::MaybeInterruptTask(mozilla::Task*)
(this=0x7fc5c85f0090, aTask=0x7fbe277a8200) at
./xpcom/threads/TaskController.cpp:860
#6 0x00007fc5cb5f957e in
mozilla::TaskController::AddTask(already_AddRefed<mozilla::Task>&&)
(this=0x7fc5c85f0090, aTask=...) at
./build-browser/dist/include/mozilla/RefPtr.h:280
#7 0x00007fc5cb5f983a in
mozilla::TaskController::DispatchRunnable(already_AddRefed<nsIRunnable>&&,
unsigned int, mozilla::TaskManager*)
(this=<optimized out>, aRunnable=..., aPriority=3, aManager=0x0) at
./xpcom/threads/TaskController.cpp:508
#8 0x00007fc5cb5f98c4 in
mozilla::detail::EventQueueInternal<16ul>::PutEvent(already_AddRefed<nsIRunnable>&&,
mozilla::EventQueuePriority, mozilla::detail::BaseAutoLock<mozilla::Mutex&>
const&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>*)
(this=<optimized out>, aEvent=..., aPriority=<optimized out>,
aProofOfLock=..., aDelay=aDelay@entry=0x0) at ./xpcom/threads/EventQueue.cpp:52
#9 0x00007fc5cb6029bd in
mozilla::ThreadEventQueue::PutEventInternal(already_AddRefed<nsIRunnable>&&,
mozilla::EventQueuePriority, mozilla::ThreadEventQueue::NestedSink*)
(this=0x7fc5c8511030, aEvent=<optimized out>, aPriority=<optimized out>,
aSink=0x0) at ./xpcom/threads/ThreadEventQueue.cpp:111
#10 0x00007fc5cb606cdd in
mozilla::ThreadEventTarget::Dispatch(already_AddRefed<nsIRunnable>, unsigned
int) (this=0x7fc5c8524b80, aEvent=..., aFlags=<optimized out>)
at ./xpcom/threads/ThreadEventTarget.cpp:103
#11 0x00007fc5cb606149 in
NS_DispatchToCurrentThread(already_AddRefed<nsIRunnable>&&) (aEvent=...) at
./xpcom/threads/nsThreadUtils.cpp:243
#12 0x00007fc5cb5f5666 in
mozilla::SchedulerGroup::InternalUnlabeledDispatch(mozilla::TaskCategory,
already_AddRefed<mozilla::SchedulerGroup::Runnable>&&)
(aCategory=<optimized out>, aRunnable=...) at
./xpcom/threads/SchedulerGroup.cpp:94
#13 0x00007fc5cb5f56f4 in
mozilla::SchedulerGroup::LabeledDispatch(mozilla::TaskCategory,
already_AddRefed<nsIRunnable>&&, mozilla::dom::DocGroup*)
(aCategory=mozilla::TaskCategory::Other, aRunnable=<optimized out>,
aDocGroup=0x7fc5c84ad0d0) at ./xpcom/threads/SchedulerGroup.cpp:83
#14 0x00007fc5cc5fd185 in (anonymous
namespace)::LabellingEventTarget::Dispatch(already_AddRefed<nsIRunnable>,
uint32_t) (this=this@entry=0x7fc5c28c2f40, aRunnable=...,
aRunnable@entry=..., aFlags=aFlags@entry=0) at ./dom/base/DocGroup.cpp:83
#15 0x00007fc5cd32c9e9 in nsIEventTarget::Dispatch(nsIRunnable*, unsigned int)
(aFlags=0, aEvent=<optimized out>, this=0x7fc5c28c2f40)
at ./build-browser/dist/include/mozilla/AlreadyAddRefed.h:48
#16 mozilla::(anonymous
namespace)::InputStreamCallbackRunnable::Execute(nsIInputStreamCallback*,
nsIEventTarget*, mozilla::RemoteLazyInputStream*)
(aCallback=0x7fc5c3ce17c8, aEventTarget=0x7fc5c28c2f40, aStream=<optimized
out>) at ./dom/file/ipc/RemoteLazyInputStream.cpp:46
#17 0x00007fc5cd32caf8 in
mozilla::RemoteLazyInputStream::OnInputStreamReady(nsIAsyncInputStream*)
(this=0x7fc5c3ce0c80, aStream=<optimized out>)
at ./dom/file/ipc/RemoteLazyInputStream.cpp:581
#18 0x00007fc5cb5c606c in nsInputStreamReadyEvent::Run() (this=0x7fbe2772b060)
at ./xpcom/io/nsStreamUtils.cpp:94
#19 0x00007fc5cb5f2aaa in mozilla::SchedulerGroup::Runnable::Run()
(this=0x7fc5a9ccf520) at ./xpcom/threads/SchedulerGroup.cpp:146
#20 0x00007fc5cb5f8899 in mozilla::RunnableTask::Run() (this=0x7fbe2775fa80) at
./xpcom/threads/TaskController.cpp:472
#21
mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&>
const&) (this=this@entry=0x7fc5c85f0090, aProofOfLock=...)
at ./xpcom/threads/TaskController.cpp:760
#22 0x00007fc5cb5fa813 in
mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&>
const&)
(this=this@entry=0x7fc5c85f0090, aProofOfLock=...) at
./xpcom/threads/TaskController.cpp:611
#23 0x00007fc5cb5faa0e in mozilla::TaskController::ProcessPendingMTTask(bool)
(this=0x7fc5c85f0090, aMayWait=false) at ./xpcom/threads/TaskController.cpp:395
#24 0x00007fc5cb5faae2 in operator() (__closure=<optimized out>) at
./xpcom/threads/TaskController.cpp:133
#25
mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::<lambda()>
>::Run(void) (this=<optimized out>)
at ./build-browser/dist/include/nsThreadUtils.h:534
#26 0x00007fc5cb6172ab in nsThread::ProcessNextEvent(bool, bool*)
(this=0x7fc5c850c580, aMayWait=<optimized out>, aResult=0x7ffe3ca91ca7) at
./xpcom/threads/nsThread.cpp:1158
#27 0x00007fc5cb605b48 in NS_ProcessNextEvent(nsIThread*, bool)
(aThread=<optimized out>, aThread@entry=0x7fc5c850c580,
aMayWait=aMayWait@entry=false)
at ./xpcom/threads/nsThreadUtils.cpp:548
#28 0x00007fc5cbbabe4a in
mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*)
(this=0x7fc5d62a3290, aDelegate=0x7ffe3ca91e50) at ./ipc/glue/MessagePump.cpp:87
#29 0x00007fc5cbb78215 in MessageLoop::RunInternal() (this=<optimized out>) at
./ipc/chromium/src/base/message_loop.cc:335
#30 MessageLoop::RunHandler() (this=<optimized out>) at
./ipc/chromium/src/base/message_loop.cc:328
#31 MessageLoop::Run() (this=<optimized out>) at
./ipc/chromium/src/base/message_loop.cc:310
#32 0x00007fc5cde0ecf8 in nsBaseAppShell::Run() (this=0x7fc5c3de8520) at
./widget/nsBaseAppShell.cpp:137
#33 0x00007fc5cee7a653 in XRE_RunAppShell() () at
./toolkit/xre/nsEmbedFunctions.cpp:902
#34 0x00007fc5cbb78215 in MessageLoop::RunInternal() (this=0x7ffe3ca91e50) at
./ipc/chromium/src/base/message_loop.cc:335
#35 MessageLoop::RunHandler() (this=0x7ffe3ca91e50) at
./ipc/chromium/src/base/message_loop.cc:328
#36 MessageLoop::Run() (this=this@entry=0x7ffe3ca91e50) at
./ipc/chromium/src/base/message_loop.cc:310
#37 0x00007fc5cee7aa4e in XRE_InitChildProcess(int, char**, XREChildData
const*) (aArgc=13, aArgv=0x7ffe3ca921e8, aChildData=<optimized out>)
at ./toolkit/xre/nsEmbedFunctions.cpp:733
#38 0x000055dad59c6d17 in content_process_main(mozilla::Bootstrap*, int,
char**) (bootstrap=0x7fc5d6233630, argc=15, argv=argv@entry=0x7ffe3ca921e8)
at ./browser/app/../../ipc/contentproc/plugin-container.cpp:57
#39 0x000055dad59c6590 in main(int, char**, char**) (argc=<optimized out>,
argv=<optimized out>, envp=0x7ffe3ca92270) at
./build-browser/dist/include/mozilla/UniquePtr.h:290
(gdb) c
Continuing.
[Thread 0x7fc5ad408700 (LWP 3909) exited]
^C
Thread 1 "WebExtensions" received signal SIGINT, Interrupt.
__vdso_clock_gettime (clock=<optimized out>, ts=0x7ffe3ca91660) at
arch/x86/include/asm/vdso/gettimeofday.h:78
Download failed: Invalid argument. Continuing without source file
debian/build/build_amd64_none_amd64/arch/x86/include/asm/vdso/gettimeofday.h.
78 arch/x86/include/asm/vdso/gettimeofday.h: No such file or directory.
(gdb) bt
#0 __vdso_clock_gettime (clock=<optimized out>, ts=0x7ffe3ca91660) at
arch/x86/include/asm/vdso/gettimeofday.h:78
#1 0x00007fc5d66d3b41 in __GI___clock_gettime (clock_id=clock_id@entry=1,
tp=tp@entry=0x7ffe3ca91660) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#2 0x000055dad5a0f7b1 in ClockTimeNs () at
./mozglue/misc/TimeStamp_posix.cpp:74
#3 mozilla::TimeStamp::Now(bool) (aHighResolution=aHighResolution@entry=true)
at ./mozglue/misc/TimeStamp_posix.cpp:186
#4 0x00007fc5cb5f94e2 in mozilla::TimeStamp::Now() () at
./build-browser/dist/include/mozilla/TimeStamp.h:452
#5 mozilla::TaskController::AddTask(already_AddRefed<mozilla::Task>&&)
(this=0x7fc5c85f0090, aTask=...) at ./xpcom/threads/TaskController.cpp:344
#6 0x00007fc5cb5f983a in
mozilla::TaskController::DispatchRunnable(already_AddRefed<nsIRunnable>&&,
unsigned int, mozilla::TaskManager*)
(this=<optimized out>, aRunnable=..., aPriority=3, aManager=0x0) at
./xpcom/threads/TaskController.cpp:508
#7 0x00007fc5cb5f98c4 in
mozilla::detail::EventQueueInternal<16ul>::PutEvent(already_AddRefed<nsIRunnable>&&,
mozilla::EventQueuePriority, mozilla::detail::BaseAutoLock<mozilla::Mutex&>
const&, mozilla::BaseTimeDuration<mozilla::TimeDurationValueCalculator>*)
(this=<optimized out>, aEvent=..., aPriority=<optimized out>,
aProofOfLock=..., aDelay=aDelay@entry=0x0) at ./xpcom/threads/EventQueue.cpp:52
#8 0x00007fc5cb6029bd in
mozilla::ThreadEventQueue::PutEventInternal(already_AddRefed<nsIRunnable>&&,
mozilla::EventQueuePriority, mozilla::ThreadEventQueue::NestedSink*)
(this=0x7fc5c8511030, aEvent=<optimized out>, aPriority=<optimized out>,
aSink=0x0) at ./xpcom/threads/ThreadEventQueue.cpp:111
#9 0x00007fc5cb606cdd in
mozilla::ThreadEventTarget::Dispatch(already_AddRefed<nsIRunnable>, unsigned
int) (this=0x7fc5c8524b80, aEvent=..., aFlags=<optimized out>)
at ./xpcom/threads/ThreadEventTarget.cpp:103
#10 0x00007fc5cb606149 in
NS_DispatchToCurrentThread(already_AddRefed<nsIRunnable>&&) (aEvent=...) at
./xpcom/threads/nsThreadUtils.cpp:243
#11 0x00007fc5cb5f5666 in
mozilla::SchedulerGroup::InternalUnlabeledDispatch(mozilla::TaskCategory,
already_AddRefed<mozilla::SchedulerGroup::Runnable>&&)
(aCategory=<optimized out>, aRunnable=...) at
./xpcom/threads/SchedulerGroup.cpp:94
#12 0x00007fc5cb5f56f4 in
mozilla::SchedulerGroup::LabeledDispatch(mozilla::TaskCategory,
already_AddRefed<nsIRunnable>&&, mozilla::dom::DocGroup*)
(aCategory=mozilla::TaskCategory::Other, aRunnable=<optimized out>,
aDocGroup=0x7fc5c84ad0d0) at ./xpcom/threads/SchedulerGroup.cpp:83
#13 0x00007fc5cc5fd185 in (anonymous
namespace)::LabellingEventTarget::Dispatch(already_AddRefed<nsIRunnable>,
uint32_t)
(this=<optimized out>, aRunnable=..., aFlags=<optimized out>) at
./dom/base/DocGroup.cpp:83
#14 0x00007fc5cb5c9c92 in non-virtual thunk to
nsInputStreamReadyEvent::OnInputStreamReady(nsIAsyncInputStream*) () at
./xpcom/io/nsStreamUtils.cpp:89
#15 0x00007fc5cb5cf66f in nsPipeEvents::~nsPipeEvents() (this=0x7ffe3ca91920,
__in_chrg=<optimized out>) at ./xpcom/io/nsPipe3.cpp:1141
#16 0x00007fc5cb5d34a7 in nsPipeInputStream::AsyncWait(nsIInputStreamCallback*,
unsigned int, unsigned int, nsIEventTarget*)
(this=0x7fc5c27061f0, aCallback=0x7fbe2772b0d0, aFlags=1017714976,
aRequestedCount=<optimized out>, aTarget=<optimized out>) at
./xpcom/io/nsPipe3.cpp:1424
#17 0x00007fc5cd32f1b9 in
mozilla::RemoteLazyInputStream::AsyncWait(nsIInputStreamCallback*, unsigned
int, unsigned int, nsIEventTarget*)
(this=0x7fc5c3ce0c80, aCallback=<optimized out>, aFlags=<optimized out>,
aRequestedCount=<optimized out>, aEventTarget=0x7fc5c28c2f40)
at ./dom/file/ipc/RemoteLazyInputStream.cpp:454
#18 0x00007fc5cb6e0765 in nsInputStreamPump::EnsureWaiting()
(this=this@entry=0x7fc5c3ce17c0) at ./netwerk/base/nsInputStreamPump.cpp:126
#19 0x00007fc5cb6ed82e in nsInputStreamPump::EnsureWaiting()
(this=0x7fc5c3ce17c0) at ./netwerk/base/nsInputStreamPump.cpp:114
#20 nsInputStreamPump::OnInputStreamReady(nsIAsyncInputStream*)
(this=0x7fc5c3ce17c0, stream=<optimized out>) at
./netwerk/base/nsInputStreamPump.cpp:442
#21 0x00007fc5cd32cbb2 in mozilla::(anonymous
namespace)::InputStreamCallbackRunnable::Run() (this=0x7fc5a9ce6370) at
./dom/file/ipc/RemoteLazyInputStream.cpp:54
#22 0x00007fc5cb5f2aaa in mozilla::SchedulerGroup::Runnable::Run()
(this=0x7fc5a9ce63a0) at ./xpcom/threads/SchedulerGroup.cpp:146
#23 0x00007fc5cb5f8899 in mozilla::RunnableTask::Run() (this=0x7fc5a9cbf680) at
./xpcom/threads/TaskController.cpp:472
#24
mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&>
const&) (this=this@entry=0x7fc5c85f0090, aProofOfLock=...)
at ./xpcom/threads/TaskController.cpp:760
#25 0x00007fc5cb5fa813 in
mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&>
const&)
(this=this@entry=0x7fc5c85f0090, aProofOfLock=...) at
./xpcom/threads/TaskController.cpp:611
#26 0x00007fc5cb5faa0e in mozilla::TaskController::ProcessPendingMTTask(bool)
(this=0x7fc5c85f0090, aMayWait=false) at ./xpcom/threads/TaskController.cpp:395
#27 0x00007fc5cb5faae2 in operator() (__closure=<optimized out>) at
./xpcom/threads/TaskController.cpp:133
#28
mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::<lambda()>
>::Run(void) (this=<optimized out>)
at ./build-browser/dist/include/nsThreadUtils.h:534
#29 0x00007fc5cb6172ab in nsThread::ProcessNextEvent(bool, bool*)
(this=0x7fc5c850c580, aMayWait=<optimized out>, aResult=0x7ffe3ca91ca7) at
./xpcom/threads/nsThread.cpp:1158
#30 0x00007fc5cb605b48 in NS_ProcessNextEvent(nsIThread*, bool)
(aThread=<optimized out>, aThread@entry=0x7fc5c850c580,
aMayWait=aMayWait@entry=false)
at ./xpcom/threads/nsThreadUtils.cpp:548
#31 0x00007fc5cbbabe4a in
mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*)
(this=0x7fc5d62a3290, aDelegate=0x7ffe3ca91e50) at ./ipc/glue/MessagePump.cpp:87
#32 0x00007fc5cbb78215 in MessageLoop::RunInternal() (this=<optimized out>) at
./ipc/chromium/src/base/message_loop.cc:335
#33 MessageLoop::RunHandler() (this=<optimized out>) at
./ipc/chromium/src/base/message_loop.cc:328
#34 MessageLoop::Run() (this=<optimized out>) at
./ipc/chromium/src/base/message_loop.cc:310
#35 0x00007fc5cde0ecf8 in nsBaseAppShell::Run() (this=0x7fc5c3de8520) at
./widget/nsBaseAppShell.cpp:137
#36 0x00007fc5cee7a653 in XRE_RunAppShell() () at
./toolkit/xre/nsEmbedFunctions.cpp:902
#37 0x00007fc5cbb78215 in MessageLoop::RunInternal() (this=0x7ffe3ca91e50) at
./ipc/chromium/src/base/message_loop.cc:335
#38 MessageLoop::RunHandler() (this=0x7ffe3ca91e50) at
./ipc/chromium/src/base/message_loop.cc:328
#39 MessageLoop::Run() (this=this@entry=0x7ffe3ca91e50) at
./ipc/chromium/src/base/message_loop.cc:310
#40 0x00007fc5cee7aa4e in XRE_InitChildProcess(int, char**, XREChildData
const*) (aArgc=13, aArgv=0x7ffe3ca921e8, aChildData=<optimized out>)
at ./toolkit/xre/nsEmbedFunctions.cpp:733
#41 0x000055dad59c6d17 in content_process_main(mozilla::Bootstrap*, int,
char**) (bootstrap=0x7fc5d6233630, argc=15, argv=argv@entry=0x7ffe3ca921e8)
at ./browser/app/../../ipc/contentproc/plugin-container.cpp:57
#42 0x000055dad59c6590 in main(int, char**, char**) (argc=<optimized out>,
argv=<optimized out>, envp=0x7ffe3ca92270) at
./build-browser/dist/include/mozilla/UniquePtr.h:290
-- Package-specific info:
-- Addons package information
-- System Information:
Debian Release: bullseye/sid
APT prefers testing-security
APT policy: (500, 'testing-security'), (500, 'unstable'), (500, 'testing'),
(1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 5.10.0-5-amd64 (SMP w/16 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages firefox depends on:
ii debianutils 4.11.2
ii fontconfig 2.13.1-4.2
ii libatk1.0-0 2.36.0-2
ii libc6 2.31-10
ii libcairo-gobject2 1.16.0-5
ii libcairo2 1.16.0-5
ii libdbus-1-3 1.12.20-2
ii libdbus-glib-1-2 0.110-6
ii libevent-2.1-7 2.1.12-stable-1
ii libffi7 3.3-6
ii libfontconfig1 2.13.1-4.2
ii libfreetype6 2.10.4+dfsg-1
ii libgcc-s1 10.2.1-6
ii libgdk-pixbuf-2.0-0 2.42.2+dfsg-1
ii libglib2.0-0 2.66.8-1
ii libgtk-3-0 3.24.24-3
ii libnspr4 2:4.29-1
ii libnss3 2:3.63-1
ii libpango-1.0-0 1.46.2-3
ii libstdc++6 10.2.1-6
ii libvpx6 1.9.0-1
ii libx11-6 2:1.7.0-2
ii libx11-xcb1 2:1.7.0-2
ii libxcb-shm0 1.14-3
ii libxcb1 1.14-3
ii libxcomposite1 1:0.4.5-1
ii libxdamage1 1:1.1.5-2
ii libxext6 2:1.3.3-1.1
ii libxfixes3 1:5.0.3-2
ii libxrender1 1:0.9.10-1
ii procps 2:3.3.17-4
ii zlib1g 1:1.2.11.dfsg-2
Versions of packages firefox recommends:
ii libavcodec58 7:4.3.2-0+deb11u1
Versions of packages firefox suggests:
ii fonts-lmodern 2.004.5-6.1
pn fonts-stix | otf-stix <none>
ii libcanberra0 0.30-7
ii libgssapi-krb5-2 1.18.3-4
ii libgtk2.0-0 2.24.33-1
pn pulseaudio <none>
-- no debconf information
