NetBSD Problem Report #60072

From www@netbsd.org  Thu Mar 12 12:50:43 2026
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Date: Thu, 12 Mar 2026 12:50:41 +0000 (UTC)
From: ea1abz@gmail.com
Reply-To: ea1abz@gmail.com
To: gnats-bugs@NetBSD.org
Subject: x11/xfce4-screeshooter crash on RaspberryPi 4
X-Send-Pr-Version: www-1.0
X-From4GNATS: "ea1abz@gmail.com via gnats" <gnats-admin@NetBSD.org>

>Number:         60072
>Category:       pkg
>Synopsis:       x11/xfce4-screeshooter crash on RaspberryPi 4
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Mar 12 12:55:00 +0000 2026
>Last-Modified:  Fri Mar 13 08:35:01 +0000 2026
>Originator:     Ramiro Aceves
>Release:        2025Q4
>Organization:
>Environment:
NetBSD netbsd-raspa4 10.1 NetBSD 10.1 (GENERIC64) #0: Mon Dec 16 13:08:11 UTC 2024  mkrepro@mkrepro.NetBSD.org:/usr/src/sys/arch/evbarm/compile/GENERIC64 evbarm
>Description:
execute:

netbsd-raspa4$ xfce4-screenshooter 

select an area with the mouse and copy to the clipboard

(xfce4-screenshooter:20845): GVFS-RemoteVolumeMonitor-WARNING **: 13:45:04.215: cannot open directory /usr/pkg/share/gvfs/remote-volume-monitors: Falló al abrir la carpeta «/usr/pkg/share/gvfs/remote-volume-monitors»: No such file or directory
[1]   Illegal instruction (core dumped) xfce4-screenshooter
netbsd-raspa4$ 

I compiled multimedia/libaom with debugging symbols just in case it helps.

netbsd-raspa4$ gdb /usr/pkg/bin/xfce4-screenshooter
GNU gdb (GDB) 11.0.50.20200914-git
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
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Reading symbols from /usr/pkg/bin/xfce4-screenshooter...
(No debugging symbols found in /usr/pkg/bin/xfce4-screenshooter)
(gdb) run
Starting program: /usr/pkg/bin/xfce4-screenshooter 
[New LWP 20821 of process 25777]
[New LWP 20970 of process 25777]
[New LWP 23253 of process 25777]
[New LWP 5453 of process 25777]
[New LWP 13098 of process 25777]

(xfce4-screenshooter:25777): GVFS-RemoteVolumeMonitor-WARNING **: 13:47:19.455: cannot open directory /usr/pkg/share/gvfs/remote-volume-monitors: Falló al abrir la carpeta «/usr/pkg/share/gvfs/remote-volume-monitors»: No such file or directory
[New LWP 28861 of process 25777]
[New LWP 21782 of process 25777]
[New LWP 28541 of process 25777]

Thread 1 "" received signal SIGILL, Illegal instruction.
variance_16xh_neon_dotprod (sum=<synthetic pointer>, sse=0xffffffe99f54, h=16, 
    ref_stride=<optimized out>, 
    ref=0xffd38c5e4538 <AV1_VAR_OFFS> '\200' <repeats 128 times>, "\004\005\005\006\a\a\b\t\t\n\v\v\f\r\r\016\006\006\b\b\n\n", src_stride=<optimized out>, 
    src=0xffd38dd18270 "")
    at /usr/pkgsrc/multimedia/libaom/work/libaom-3.12.1/aom_dsp/arm/variance_neon_dotprod.c:93
93	    src_sum = vdotq_u32(src_sum, s, vdupq_n_u8(1));
(gdb) list
88	  int i = h;
89	  do {
90	    uint8x16_t s = vld1q_u8(src);
91	    uint8x16_t r = vld1q_u8(ref);
92	
93	    src_sum = vdotq_u32(src_sum, s, vdupq_n_u8(1));
94	    ref_sum = vdotq_u32(ref_sum, r, vdupq_n_u8(1));
95	
96	    uint8x16_t abs_diff = vabdq_u8(s, r);
97	    sse_u32 = vdotq_u32(sse_u32, abs_diff, abs_diff);
(gdb) list
98	
99	    src += src_stride;
100	    ref += ref_stride;
101	  } while (--i != 0);
102	
103	  int32x4_t sum_diff =
104	      vsubq_s32(vreinterpretq_s32_u32(src_sum), vreinterpretq_s32_u32(ref_sum));
105	  *sum = horizontal_add_s32x4(sum_diff);
106	  *sse = horizontal_add_u32x4(sse_u32);
107	}
(gdb)
>How-To-Repeat:
execute xfce4-screenshooter, select an area with the mouse and copy to the clipboard.
>Fix:
Yes please.

>Audit-Trail:
From: Benny Siegert <bsiegert@netbsd.org>
To: gnats-bugs@netbsd.org
Cc: pkg-manager@netbsd.org, gnats-admin@netbsd.org, pkgsrc-bugs@netbsd.org
Subject: Re: pkg/60072: x11/xfce4-screeshooter crash on RaspberryPi 4
Date: Thu, 12 Mar 2026 17:59:08 +0000 (UTC)

 On Thu, 12 Mar 2026, ea1abz@gmail.com via gnats wrote:

 > Thread 1 "" received signal SIGILL, Illegal instruction.
 > variance_16xh_neon_dotprod (sum=<synthetic pointer>, sse=0xffffffe99f54, h=16,

 This sounds like your libaom is compiled to use Neon VFP instructions, but 
 your hardware doesn't support them.

 -- 
 Benny

From: Ramiro Aceves <ea1abz@gmail.com>
To: gnats-bugs@netbsd.org, pkg-manager@netbsd.org, gnats-admin@netbsd.org,
 pkgsrc-bugs@netbsd.org
Cc: 
Subject: Re: pkg/60072: x11/xfce4-screeshooter crash on RaspberryPi 4
Date: Fri, 13 Mar 2026 09:31:48 +0100

 El 12/3/26 a las 19:00, Benny Siegert via gnats escribió:
 > The following reply was made to PR pkg/60072; it has been noted by GNATS.
 > 
 > From: Benny Siegert <bsiegert@netbsd.org>
 > To: gnats-bugs@netbsd.org
 > Cc: pkg-manager@netbsd.org, gnats-admin@netbsd.org, pkgsrc-bugs@netbsd.org
 > Subject: Re: pkg/60072: x11/xfce4-screeshooter crash on RaspberryPi 4
 > Date: Thu, 12 Mar 2026 17:59:08 +0000 (UTC)
 > 
 >   On Thu, 12 Mar 2026, ea1abz@gmail.com via gnats wrote:
 >   
 >   > Thread 1 "" received signal SIGILL, Illegal instruction.
 >   > variance_16xh_neon_dotprod (sum=<synthetic pointer>, sse=0xffffffe99f54, h=16,
 >   
 >   This sounds like your libaom is compiled to use Neon VFP instructions, but
 >   your hardware doesn't support them.
 >   
 >   --
 >   Benny
 >   

 Hi Benny.

 It seems to fix placing this in multimedia/libaom Makefile:

 CMAKE_CONFIGURE_ARGS+=	-DENABLE_NEON_DOTPROD=0

 I do not know if it is a proper fix.

 Regards.

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