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[Bug 2078854] [NEW] samba-gpupdate drops segmentation fault

To: enterprise-support@xxxxxxxxxxxxxxxxxxx
From: Igor I Shatunov <2078854@xxxxxxxxxxxxxxxxxx>
Date: Tue, 03 Sep 2024 18:20:51 -0000
Reply-to: Bug 2078854 <2078854@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Public bug reported:

When I try to run samba-gpupdate as root it falls with segmentation
fault:

$ sudo samba-gpupdate
===============================================================
INTERNAL ERROR: Signal 11: Segmentation fault in  () () pid 269490 (4.19.5-Ubuntu)
If you are running a recent Samba version, and if you think this problem is not yet fixed in the latest versions, please consider reporting this bug, see https://wiki.samba.org/index.php/Bug_Reporting
===============================================================
PANIC (pid 269490): Signal 11: Segmentation fault in 4.19.5-Ubuntu
BACKTRACE: 19 stack frames:
 #0 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(log_stack_trace+0x37) [0x75f438833517]
 #1 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(smb_panic+0x15) [0x75f438833d25]
 #2 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(+0x2dca) [0x75f438833dca]
 #3 /lib/x86_64-linux-gnu/libc.so.6(+0x45320) [0x75f439645320]
 #4 /usr/lib/x86_64-linux-gnu/samba/libsamba-security-samba4.so.0(ndr_push_security_descriptor+0x195) [0x75f435735545]
 #5 /lib/x86_64-linux-gnu/libndr.so.3(ndr_push_struct_blob+0x3f) [0x75f437591e4f]
 #6 /usr/lib/x86_64-linux-gnu/samba/libsamba-security-samba4.so.0(marshall_sec_desc+0x3f) [0x75f43573d5af]
 #7 /usr/lib/python3/dist-packages/samba/gpo.cpython-312-x86_64-linux-gnu.so(+0x4034) [0x75f43452c034]
 #8 /usr/bin/python3(_PyEval_EvalFrameDefault+0x3640) [0x5d9cb0]
 #9 /usr/bin/python3(PyEval_EvalCode+0x15b) [0x5d560b]
 #10 /usr/bin/python3() [0x608812]
 #11 /usr/bin/python3() [0x6b50e3]
 #12 /usr/bin/python3(_PyRun_SimpleFileObject+0x1aa) [0x6b4e4a]
 #13 /usr/bin/python3(_PyRun_AnyFileObject+0x4f) [0x6b4c7f]
 #14 /usr/bin/python3(Py_RunMain+0x3b5) [0x6bcd35]
 #15 /usr/bin/python3(Py_BytesMain+0x2d) [0x6bc81d]
 #16 /lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x75f43962a1ca]
 #17 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x75f43962a28b]
 #18 /usr/bin/python3(_start+0x25) [0x657ca5]
smb_panic(): calling panic action [/usr/share/samba/panic-action 269490]
smb_panic(): action returned status 0
Can not dump core: corepath not set up

$ sudo lsb_release -rd
No LSB modules are available.
Description:	Ubuntu 24.04.1 LTS
Release:	24.04

$ apt-cache policy  samba
samba:
  Installed: 2:4.19.5+dfsg-4ubuntu9
  Candidate: 2:4.19.5+dfsg-4ubuntu9
  Version table:
 *** 2:4.19.5+dfsg-4ubuntu9 500
        500 http://cy.archive.ubuntu.com/ubuntu noble/main amd64 Packages
        100 /var/lib/dpkg/status

samba configuration:
$ sudo cat /etc/samba/smb.conf:
# Global parameters
[global]
	apply group policies = Yes
	idmap gid = 10000-20000
	idmap uid = 10000-20000
	log file = /var/log/samba/log.%m
	logging = file
	map to guest = Bad User
	max log size = 1000
	obey pam restrictions = Yes
	pam password change = Yes
	panic action = /usr/share/samba/panic-action %d
	passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
	passwd program = /usr/bin/passwd %u
	realm = LAN.PSYNET.SU
	restrict anonymous = 2
	security = ADS
	server role = standalone server
	server string = %h server (Samba, Ubuntu)
	template shell = /bin/bash
	unix password sync = Yes
	usershare allow guests = Yes
	winbind enum groups = Yes
	winbind enum users = Yes
	winbind refresh tickets = Yes
	winbind use default domain = Yes
	workgroup = LAN

[printers]
	browseable = No
	comment = All Printers
	create mask = 0700
	path = /var/spool/samba
	printable = Yes

[cifs-storage]
	comment = CIFS Storage for all purposes
	path = /storage/cifs
	read list = @unix_admin
	read only = No
	write list = @unix_admin

[print$]
	comment = Printer Drivers
	path = /var/lib/samba/printers

$ sudo net ads info
LDAP server: 192.168.13.3
LDAP server name: LIM-WIN-DC1.lan.psynet.su
Realm: LAN.PSYNET.SU
Bind Path: dc=LAN,dc=PSYNET,dc=SU
LDAP port: 389
Server time: Tue, 03 Sep 2024 21:13:09 EEST
KDC server: 192.168.13.3
Server time offset: 3
Last machine account password change: Mon, 02 Sep 2024 12:27:02 EEST


Additional info:
Dependencies:
 adduser 3.137ubuntu1
 ca-certificates 20240203
 dbus 1.14.10-4ubuntu4.1
 dbus-bin 1.14.10-4ubuntu4.1
 dbus-daemon 1.14.10-4ubuntu4.1
 dbus-session-bus-common 1.14.10-4ubuntu4.1
 dbus-system-bus-common 1.14.10-4ubuntu4.1
 debconf 1.5.86ubuntu1
 dirmngr 2.4.4-2ubuntu17
 dpkg 1.22.6ubuntu6.1
 gcc-14-base 14-20240412-0ubuntu1
 gnupg 2.4.4-2ubuntu17
 gnupg-l10n 2.4.4-2ubuntu17
 gnupg-utils 2.4.4-2ubuntu17
 gpg 2.4.4-2ubuntu17
 gpg-agent 2.4.4-2ubuntu17
 gpg-wks-client 2.4.4-2ubuntu17
 gpgconf 2.4.4-2ubuntu17
 gpgsm 2.4.4-2ubuntu17
 gpgv 2.4.4-2ubuntu17
 init-system-helpers 1.66ubuntu1
 keyboxd 2.4.4-2ubuntu17
 krb5-locales 1.20.1-6ubuntu2.1
 libacl1 2.3.2-1build1
 libapparmor1 4.0.1really4.0.0-beta3-0ubuntu0.1
 libassuan0 2.5.6-1build1
 libaudit-common 1:3.1.2-2.1build1
 libaudit1 1:3.1.2-2.1build1
 libavahi-client3 0.8-13ubuntu6
 libavahi-common-data 0.8-13ubuntu6
 libavahi-common3 0.8-13ubuntu6
 libbsd0 0.12.1-1build1
 libbz2-1.0 1.0.8-5.1build0.1
 libc6 2.39-0ubuntu8.3
 libcap-ng0 0.8.4-2build2
 libcap2 1:2.66-5ubuntu2
 libcom-err2 1.47.0-2.4~exp1ubuntu4.1
 libcrypt1 1:4.4.36-4build1
 libdb5.3t64 5.3.28+dfsg2-7
 libdbus-1-3 1.14.10-4ubuntu4.1
 libexpat1 2.6.1-2build1
 libffi8 3.4.6-1build1
 libgcc-s1 14-20240412-0ubuntu1
 libgcrypt20 1.10.3-2build1
 libgmp10 2:6.3.0+dfsg-2ubuntu6
 libgnutls30t64 3.8.3-1.1ubuntu3.2
 libgpg-error0 1.47-3build2
 libgpgme11t64 1.18.0-4.1ubuntu4
 libgpm2 1.20.7-11
 libgssapi-krb5-2 1.20.1-6ubuntu2.1
 libhogweed6t64 3.9.1-2.2build1.1
 libicu74 74.2-1ubuntu3.1
 libidn2-0 2.3.7-2build1
 libjansson4 2.14-2build2
 libk5crypto3 1.20.1-6ubuntu2.1
 libkeyutils1 1.6.3-3build1
 libkrb5-3 1.20.1-6ubuntu2.1
 libkrb5support0 1.20.1-6ubuntu2.1
 libksba8 1.6.6-1build1
 libldap-common 2.6.7+dfsg-1~exp1ubuntu8
 libldap2 2.6.7+dfsg-1~exp1ubuntu8
 libldb2 2:2.8.0+samba4.19.5+dfsg-4ubuntu9
 liblmdb0 0.9.31-1build1
 liblz4-1 1.9.4-1build1.1
 liblzma5 5.6.1+really5.4.5-1build0.1
 libmd0 1.1.0-2build1
 libncursesw6 6.4+20240113-1ubuntu2
 libnettle8t64 3.9.1-2.2build1.1
 libnpth0t64 1.6-3.1build1
 libp11-kit0 0.25.3-4ubuntu2.1
 libpam-modules 1.5.3-5ubuntu5.1
 libpam-modules-bin 1.5.3-5ubuntu5.1
 libpam0g 1.5.3-5ubuntu5.1
 libpcre2-8-0 10.42-4ubuntu2
 libpopt0 1.19+dfsg-1build1
 libpython3-stdlib 3.12.3-0ubuntu2
 libpython3.12-minimal 3.12.3-1ubuntu0.1
 libpython3.12-stdlib 3.12.3-1ubuntu0.1
 libpython3.12t64 3.12.3-1ubuntu0.1
 libreadline8t64 8.2-4build1
 libsasl2-2 2.1.28+dfsg1-5ubuntu3.1
 libsasl2-modules 2.1.28+dfsg1-5ubuntu3.1
 libsasl2-modules-db 2.1.28+dfsg1-5ubuntu3.1
 libselinux1 3.5-2ubuntu2
 libsemanage-common 3.5-1build5
 libsemanage2 3.5-1build5
 libsepol2 3.5-2build1
 libsqlite3-0 3.45.1-1ubuntu2
 libssl3t64 3.0.13-0ubuntu3.4
 libstdc++6 14-20240412-0ubuntu1
 libsystemd0 255.4-1ubuntu8.4
 libtalloc2 2.4.2-1build2
 libtasn1-6 4.19.0-3build1
 libtdb1 1.4.10-1build1
 libtevent0t64 0.16.1-2build1
 libtinfo6 6.4+20240113-1ubuntu2
 libtirpc-common 1.3.4+ds-1.1build1
 libtirpc3t64 1.3.4+ds-1.1build1
 libunistring5 1.1-2build1
 libwbclient0 2:4.19.5+dfsg-4ubuntu9
 libyaml-0-2 0.2.5-1build1
 libzstd1 1.5.5+dfsg2-2build1.1
 media-types 10.1.0
 netbase 6.4
 openssl 3.0.13-0ubuntu3.4
 passwd 1:4.13+dfsg1-4ubuntu3
 pinentry-curses 1.2.1-3ubuntu5
 python3 3.12.3-0ubuntu2
 python3-gpg 1.18.0-4.1ubuntu4
 python3-ldb 2:2.8.0+samba4.19.5+dfsg-4ubuntu9
 python3-markdown 3.5.2-1
 python3-minimal 3.12.3-0ubuntu2
 python3-pkg-resources 68.1.2-2ubuntu1
 python3-pygments 2.17.2+dfsg-1
 python3-talloc 2.4.2-1build2
 python3-tdb 1.4.10-1build1
 python3-yaml 6.0.1-2build2
 python3.12 3.12.3-1ubuntu0.1
 python3.12-minimal 3.12.3-1ubuntu0.1
 readline-common 8.2-4build1
 samba-libs 2:4.19.5+dfsg-4ubuntu9
 sensible-utils 0.0.22
 tar 1.35+dfsg-3build1
 tzdata 2024a-3ubuntu1.1
 zlib1g 1:1.3.dfsg-3.1ubuntu2.1
DistroRelease: Ubuntu 24.04
Package: python3-samba 2:4.19.5+dfsg-4ubuntu9
PackageArchitecture: amd64
ProcCpuinfoMinimal:
 processor	: 0
 vendor_id	: GenuineIntel
 cpu family	: 6
 model		: 71
 model name	: Intel(R) Core(TM) i5-5675C CPU @ 3.10GHz
 stepping	: 1
 microcode	: 0x22
 cpu MHz		: 3099.996
 cache size	: 16384 KB
 physical id	: 0
 siblings	: 1
 core id		: 0
 cpu cores	: 1
 apicid		: 0
 initial apicid	: 0
 fpu		: yes
 fpu_exception	: yes
 cpuid level	: 20
 wp		: yes
 flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon rep_good nopl xtopology cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault pti ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx smap xsaveopt arat vnmi umip md_clear arch_capabilities
 vmx flags	: vnmi preemption_timer invvpid ept_x_only ept_ad ept_1gb flexpriority tsc_offset vtpr mtf vapic ept vpid unrestricted_guest shadow_vmcs pml
 bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs taa srbds mmio_unknown bhi
 bogomips	: 6199.99
 clflush size	: 64
 cache_alignment	: 64
 address sizes	: 39 bits physical, 48 bits virtual
 power management:
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
ProcVersionSignature: Ubuntu 6.8.0-38.38-generic 6.8.8
RebootRequiredPkgs: Error: path contained symlinks.
SambaClientRegression: Yes
SambaInstalledVersions:
 samba 2:4.19.5+dfsg-4ubuntu9
 samba-common-bin 2:4.19.5+dfsg-4ubuntu9
 samba-common 2:4.19.5+dfsg-4ubuntu9
 samba-tools N/A
 smbclient N/A
 swat N/A
 samba-doc N/A
 samba-doc-pdf N/A
 smbfs N/A
 libpam-smbpass N/A
 libsmbclient N/A
 libsmbclient-dev N/A
 winbind 2:4.19.5+dfsg-4ubuntu9
 samba-dbg N/A
 libwbclient0 2:4.19.5+dfsg-4ubuntu9

SourcePackage: samba
Tags: noble
Uname: Linux 6.8.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
_MarkForUpload: True

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: samba

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https://bugs.launchpad.net/bugs/2078854

Title:
  samba-gpupdate drops segmentation fault

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