[Pkg-utopia-maintainers] Bug#1128353: dbus-broker: randomly crashes with signal SIGSEGV

[Thom]

Package: dbus-broker
Version: 37-2
Severity: important
X-Debbugs-Cc: thom1982 at gmail.com

Dear Maintainer,

I experienced system crashes on both my office PC and home laptop last week.
Both systems use dbus-broker 37-2 (from the Debian stable release).

After diving deeper into the issue, I found the following coredumps:

ls -la /var/lib/systemd/coredump/
-rw-r-----+  1 root root  171555 Feb 10 23:14 core.dbus-broker.1003.0baeeead1fa4433faf59ac21769b6f34.119538.1770729295000000.zst
-rw-r-----+  1 root root 1497429 Feb 10 19:23 core.kwin_x11.1003.0baeeead1fa4433faf59ac21769b6f34.643643.1770715425000000.zst
-rw-r-----+  1 root root 1054550 Feb 10 23:14 core.wireplumber.1003.0baeeead1fa4433faf59ac21769b6f34.119541.1770729295000000.zst


Unfortunately, I do not have debug symbols installed, so I am not sure if the backtrace will be useful.

== home laptop ==

Reading symbols from /usr/bin/dbus-broker...
(No debugging symbols found in /usr/bin/dbus-broker)
[New LWP 3295]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/dbus-broker --log 11 --controller 10 --machine-id 31401a4ff1b14510b6092ba1b5ff3fcc --max-bytes 100000000000000 --max-fds 25000000000000 --max-matches 5000000000'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007fac89513259 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0 0x00007fac89513259 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00005566944e08fb in ?? ()
#2 0x00005566944e0bfa in ?? ()
#3 0x00005566944e18f7 in ?? ()
#4 0x00005566944d8b31 in ?? ()
#5 0x00005566944d5d62 in ?? ()
#6 0x00005566944cfe94 in ?? ()
#7 0x00005566944d48ad in ?? ()
#8 0x00005566944dd980 in ?? ()
#9 0x00005566944c4bdc in ?? ()
#10 0x00005566944c3fa8 in ?? ()
#11 0x00007fac893d6ca8 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x00007fac893d6d65 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#13 0x00005566944c4311 in ?? ()
(gdb)


== office pc ==

Reading symbols from /usr/bin/dbus-broker...
(No debugging symbols found in /usr/bin/dbus-broker)
[New LWP 119538]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/dbus-broker --log 11 --controller 10 --machine-id 643e593e8e114aa78b1476d6b1f83289 --max-bytes 100000000000000 --max-fds 25000000000000 --max-matches 5000000000'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f51d6ab1259 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0  0x00007f51d6ab1259 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00005582010378fb in ?? ()
#2  0x0000558201037bfa in ?? ()
#3  0x00005582010388f7 in ?? ()
#4  0x000055820102fb31 in ?? ()
#5  0x000055820102cd62 in ?? ()
#6  0x0000558201026e94 in ?? ()
#7  0x000055820102b8ad in ?? ()
#8  0x0000558201034980 in ?? ()
#9  0x000055820101bbdc in ?? ()
#10 0x000055820101afa8 in ?? ()
#11 0x00007f51d6974ca8 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x00007f51d6974d65 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#13 0x000055820101b311 in ?? ()
(gdb)


As I can see, there is a closed bug with similar symptoms:
#1123876 (dbus-broker: Crashes when trying to mount encrypted USB from Plasma).
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1123876


Could you please consider cherry-picking the fix from version 37-4
into a point release for Trixie stable (via trixie-proposed-updates)
or providing an updated version through trixie-backports?


Thank you!




-- System Information:
Debian Release: 13.3
  APT prefers stable-updates
  APT policy: (990, 'stable-updates'), (990, 'stable-security'), (990, 'stable'), (500, 'proposed-updates'), (100, 'trixie-fasttrack'), (100, 'trixie-backports-staging')
Architecture: amd64 (x86_64)

Kernel: Linux 6.18.5+deb13-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to C.UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages dbus-broker depends on:
ii  dbus-system-bus-common  1.16.2-2
ii  init-system-helpers     1.69~deb13u1
ii  libapparmor1            4.1.0-1
ii  libaudit1               1:4.0.2-2+b2
ii  libc6                   2.41-12+deb13u1
ii  libcap-ng0              0.8.5-4+b1
ii  libexpat1               2.7.1-2
ii  libselinux1             3.8.1-1
ii  libsystemd0             257.9-1~deb13u1
ii  systemd-sysv            257.9-1~deb13u1

Versions of packages dbus-broker recommends:
ii  dbus-bin  1.16.2-2

dbus-broker suggests no packages.

-- no debconf information