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Devuan bug report logs - #637
xpdf crashes the window manager

Package: xpdf; Reported by: David Haworth <[email protected]>; Keywords: debian invalid; Done: Mark Hindley <[email protected]>; Maintainer for xpdf is (unknown).

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From: Mark Hindley <[email protected]>
To: [email protected], [email protected]
Subject: Re: bug#637: xpdf crashes the window manager
Message-ID: <[email protected]>
References: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
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Control: tags -1 invalid

David,

On Tue, Nov 30, 2021 at 04:35:05PM +0100, David Haworth wrote:
> Hi Adam,
> 
> You're right - it is indeed the X server that crashes.
> 
> I've only noticed the problem recently, but that doesn't necessarily mean
> that it's a new problem.
> 
> Changing the font as you suggested doesn't have any effect, so I
> don't think it's the font rendering. The backtrace from Xorg.0.log
> shows
> 
> [ 10759.847] (EE) Backtrace:
> [ 10759.860] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x135) [0x55662f3b7e05]
> [ 10759.861] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7fe2d501b8e0]
> [ 10759.861] (EE) 2: ? (?+0x0) [0x7fe2c169003a]
> [ 10759.861] (EE)
> [ 10759.861] (EE) Segmentation fault at address 0x7fe2c28be000
> 
> I guess I'd better re-report the bug. This report can be closed.

Closing as requested.

Thanks.

Mark

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From: Mark Hindley <[email protected]>
To: [email protected], [email protected]
Subject: Re: bug#637: xpdf crashes the window manager
Message-ID: <[email protected]>
References: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
 <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
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Control: tags -1 invalid

David,

On Tue, Nov 30, 2021 at 04:35:05PM +0100, David Haworth wrote:
> Hi Adam,
> 
> You're right - it is indeed the X server that crashes.
> 
> I've only noticed the problem recently, but that doesn't necessarily mean
> that it's a new problem.
> 
> Changing the font as you suggested doesn't have any effect, so I
> don't think it's the font rendering. The backtrace from Xorg.0.log
> shows
> 
> [ 10759.847] (EE) Backtrace:
> [ 10759.860] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x135) [0x55662f3b7e05]
> [ 10759.861] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7fe2d501b8e0]
> [ 10759.861] (EE) 2: ? (?+0x0) [0x7fe2c169003a]
> [ 10759.861] (EE)
> [ 10759.861] (EE) Segmentation fault at address 0x7fe2c28be000
> 
> I guess I'd better re-report the bug. This report can be closed.

Closing as requested.

Thanks.

Mark
Notification sent to David Haworth <[email protected]>:
bug acknowledged by developer. Full text available.
Reply sent to Mark Hindley <[email protected]>:
You have taken responsibility. Full text available.

Message received at [email protected]:


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From: Mark Hindley <[email protected]>
To: [email protected], [email protected]
Subject: Re: bug#637: xpdf crashes the window manager
Message-ID: <[email protected]>
References: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
 <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
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Control: tags -1 invalid

David,

On Tue, Nov 30, 2021 at 04:35:05PM +0100, David Haworth wrote:
> Hi Adam,
> 
> You're right - it is indeed the X server that crashes.
> 
> I've only noticed the problem recently, but that doesn't necessarily mean
> that it's a new problem.
> 
> Changing the font as you suggested doesn't have any effect, so I
> don't think it's the font rendering. The backtrace from Xorg.0.log
> shows
> 
> [ 10759.847] (EE) Backtrace:
> [ 10759.860] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x135) [0x55662f3b7e05]
> [ 10759.861] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7fe2d501b8e0]
> [ 10759.861] (EE) 2: ? (?+0x0) [0x7fe2c169003a]
> [ 10759.861] (EE)
> [ 10759.861] (EE) Segmentation fault at address 0x7fe2c28be000
> 
> I guess I'd better re-report the bug. This report can be closed.

Closing as requested.

Thanks.

Mark
Acknowledgement sent to Mark Hindley <[email protected]>:
Extra info received and forwarded to list. Copy sent to [email protected]. Full text available.
Information forwarded to [email protected], [email protected]:
bug#637; Package xpdf. Full text available.
Added tag(s) invalid. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Message received at [email protected]:


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From: Mark Hindley <[email protected]>
To: [email protected], [email protected]
Subject: Re: bug#637: xpdf crashes the window manager
Message-ID: <[email protected]>
References: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
 <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
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David,

On Tue, Nov 30, 2021 at 04:35:05PM +0100, David Haworth wrote:
> Hi Adam,
> 
> You're right - it is indeed the X server that crashes.
> 
> I've only noticed the problem recently, but that doesn't necessarily mean
> that it's a new problem.
> 
> Changing the font as you suggested doesn't have any effect, so I
> don't think it's the font rendering. The backtrace from Xorg.0.log
> shows
> 
> [ 10759.847] (EE) Backtrace:
> [ 10759.860] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x135) [0x55662f3b7e05]
> [ 10759.861] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7fe2d501b8e0]
> [ 10759.861] (EE) 2: ? (?+0x0) [0x7fe2c169003a]
> [ 10759.861] (EE)
> [ 10759.861] (EE) Segmentation fault at address 0x7fe2c28be000
> 
> I guess I'd better re-report the bug. This report can be closed.

Closing as requested.

Thanks.

Mark
Acknowledgement sent to Mark Hindley <[email protected]>:
Extra info received and forwarded to list. Copy sent to [email protected]. Full text available.
Information forwarded to [email protected], [email protected]:
bug#637; Package xpdf. Full text available.

Message received at [email protected]:


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Date: Tue, 30 Nov 2021 16:35:05 +0100
From: David Haworth <[email protected]>
To: Adam Sampson <[email protected]>
Cc: Mark Hindley <[email protected]>,
	David Haworth <[email protected]>, [email protected],
	devuan developers internal list <[email protected]>
Subject: Re: [devuan-dev] bug#637: xpdf crashes the window manager
Message-ID: <[email protected]>
References: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
 <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
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Hi Adam,

You're right - it is indeed the X server that crashes.

I've only noticed the problem recently, but that doesn't necessarily mean
that it's a new problem.

Changing the font as you suggested doesn't have any effect, so I
don't think it's the font rendering. The backtrace from Xorg.0.log
shows

[ 10759.847] (EE) Backtrace:
[ 10759.860] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x135) [0x55662f3b7e05]
[ 10759.861] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7fe2d501b8e0]
[ 10759.861] (EE) 2: ? (?+0x0) [0x7fe2c169003a]
[ 10759.861] (EE)
[ 10759.861] (EE) Segmentation fault at address 0x7fe2c28be000

I guess I'd better re-report the bug. This report can be closed.

Thanks for the tip about changing the fonts, though. The new default
fonts are too large for my liking so I'll play around and find a suitable
smaller typeface. The fixed fonts are missing some characters.

All the best,
Dave


On 2021-11-30 01:13:23 +0000, Adam Sampson wrote:
> Mark Hindley <[email protected]> writes:
> 
> > Thanks. Notwithstanding this, you should report this issue directly to
> > Debian. Devuan uses Debian's xpdf packages directly without
> > recompilation.
> 
> (I'm the maintainer of xpopple, which is the upstream source for
> Debian's xpdf these days.)
> 
> The problem reported here is not that xpdf crashes, it's that the window
> manager crashes. That shouldn't happen regardless of what client
> programs do, so this isn't a fault in xpdf itself.
> 
> Are you certain that it's the window manager crashing, and not the X
> server? The latter seems more likely -- when you're scrolling the table
> of contents, it's not changing any properties of the window (which would
> cause the WM to do something), but it is doing lots of X drawing
> operations to scroll the list and render new text. It'd be worth having
> a look at the X server log after a crash (/var/log/Xorg.0.log.old).
> 
> If it's only just started doing this, one change we've made recently in
> xpdf is to enable Xft font support by default. You could try setting the
> following X resource (with xrdb):
> 
> Xpdf*font: fixed
> 
> This should make it use a bitmap font for the interface instead, which
> will be rendered using X's core font support rather than alpha
> blending. If that fixes it, then it could be a problem with your
> graphics driver's implementation of the RENDER extension.
> 
> Thanks,
> 
> -- 
> Adam Sampson <[email protected]>                         <http://offog.org/>
Acknowledgement sent to David Haworth <[email protected]>:
Extra info received and forwarded to list. Copy sent to [email protected]. Full text available.
Information forwarded to [email protected], [email protected]:
bug#637; Package xpdf. Full text available.

Message received at [email protected]:


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From: Adam Sampson <[email protected]>
To: Mark Hindley <[email protected]>
Cc: David Haworth <[email protected]>,  [email protected],  devuan
 developers internal list <[email protected]>
Subject: Re: [devuan-dev] bug#637: xpdf crashes the window manager
References: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
	<163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
	<YaSte/[email protected]>
Date: Tue, 30 Nov 2021 01:13:23 +0000
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	"Mon, 29 Nov 2021 10:37:47 +0000")
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Mark Hindley <[email protected]> writes:

> Thanks. Notwithstanding this, you should report this issue directly to
> Debian. Devuan uses Debian's xpdf packages directly without
> recompilation.

(I'm the maintainer of xpopple, which is the upstream source for
Debian's xpdf these days.)

The problem reported here is not that xpdf crashes, it's that the window
manager crashes. That shouldn't happen regardless of what client
programs do, so this isn't a fault in xpdf itself.

Are you certain that it's the window manager crashing, and not the X
server? The latter seems more likely -- when you're scrolling the table
of contents, it's not changing any properties of the window (which would
cause the WM to do something), but it is doing lots of X drawing
operations to scroll the list and render new text. It'd be worth having
a look at the X server log after a crash (/var/log/Xorg.0.log.old).

If it's only just started doing this, one change we've made recently in
xpdf is to enable Xft font support by default. You could try setting the
following X resource (with xrdb):

Xpdf*font: fixed

This should make it use a bitmap font for the interface instead, which
will be rendered using X's core font support rather than alpha
blending. If that fixes it, then it could be a problem with your
graphics driver's implementation of the RENDER extension.

Thanks,

-- 
Adam Sampson <[email protected]>                         <http://offog.org/>
Acknowledgement sent to Adam Sampson <[email protected]>:
Extra info received and forwarded to list. Copy sent to [email protected]. Full text available.
Information forwarded to [email protected], [email protected]:
bug#637; Package xpdf. Full text available.
Added tag(s) debian. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Message received at [email protected]:


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From: Mark Hindley <[email protected]>
To: David Haworth <[email protected]>, [email protected]
Subject: Re: bug#637: xpdf crashes the window manager
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Control: tags -1 debian

David,

On Sun, Nov 28, 2021 at 08:23:55AM +0100, David Haworth wrote:
> Package: xpdf
> Version: 3.04+git20211021-1
> Severity: normal
> 
> Dear Maintainer,
> 
> xpdf crashes the window manager when trying to scroll the table of contents
> in the left-hand pane. The crash happens both when dragging the slider
> and when using the scroll wheel of the mouse.
> 
> The crash happens with both of my window managers: blackbox and xfce.
> 
> The crash seems to be related to the content of the PDF file, or
> maybe the size. The RP2040 reference manual is the file where I
> discovered the problem, but there may be others:
> 
> https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf
> 
> I've tried to reproduce the problem on my company laptop running
> debian unstable, also with both xfce and blackbox, but the crash
> doesn't happen there.

Thanks. Notwithstanding this, you should report this issue directly to
Debian. Devuan uses Debian's xpdf packages directly without recompilation.

A quick look at Debian's BTS shows both #996903 and #996832 which might be
similar.

I suggest you try to get a gdb trace and see if either of those bugs are related
and add you contribution there.

Thanks

Mark
Information forwarded to [email protected], [email protected]:
bug#637; Package xpdf. Full text available.

Message received at [email protected]:


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From: David Haworth <[email protected]>
To: Devuan Bug Tracking System <[email protected]>
Subject: xpdf crashes the window manager
Message-ID: <163808423533.18485.5663603741949018400.reportbug@fionn.haworth.lan>
Date: Sun, 28 Nov 2021 08:23:55 +0100
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Package: xpdf
Version: 3.04+git20211021-1
Severity: normal

Dear Maintainer,

xpdf crashes the window manager when trying to scroll the table of contents
in the left-hand pane. The crash happens both when dragging the slider
and when using the scroll wheel of the mouse.

The crash happens with both of my window managers: blackbox and xfce.

The crash seems to be related to the content of the PDF file, or
maybe the size. The RP2040 reference manual is the file where I
discovered the problem, but there may be others:

https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf

I've tried to reproduce the problem on my company laptop running
debian unstable, also with both xfce and blackbox, but the crash
doesn't happen there.

All the best,
Dave


-- System Information:
Distributor ID:	Devuan
Description:	Devuan GNU/Linux 5 (daedalus/ceres)
Release:	5
Codename:	daedalus ceres
Architecture: x86_64

Kernel: Linux 5.14.0-4-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages xpdf depends on:
ii  libc6          2.32-4
ii  libgcc-s1      11.2.0-12
ii  libpaper1      1.1.28+b1
ii  libpoppler102  20.09.0-3.1
ii  libstdc++6     11.2.0-12
ii  libx11-6       2:1.7.2-2+b1
ii  libxm4         2.3.8-3
ii  libxt6         1:1.2.0-1

Versions of packages xpdf recommends:
ii  cups-bsd        2.3.3op2-7
ii  gsfonts-x11     0.28
ii  poppler-data    0.4.11-1
ii  poppler-utils   20.09.0-3.1
ii  sensible-utils  0.0.17

xpdf suggests no packages.

-- no debconf information
Acknowledgement sent to David Haworth <[email protected]>:
New bug report received and forwarded. Copy sent to [email protected]. Full text available.
Report forwarded to [email protected], [email protected]:
bug#637; Package xpdf. Full text available.

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Last modified: Sat, 18 Jan 2025 04:39:02 UTC