[Bug 1769301] Missing required logs.
Ubuntu Kernel Bot
kernel-team-bot at canonical.com
Mon Jul 29 15:30:07 UTC 2019
This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1769301
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1769301
Title:
resetting /proc/thread-self/attr/fscreate results in 'Invalid
Argument'
Status in libselinux package in Ubuntu:
Confirmed
Status in linux package in Ubuntu:
Incomplete
Bug description:
root at ubuntu:~# useradd -g 100 tst003
useradd: failure while writing changes to /etc/passwd
root at ubuntu:~# sestatus
SELinux status: enabled
SELinuxfs mount: /sys/fs/selinux
SELinux root directory: /etc/selinux
Loaded policy name: default
Current mode: permissive
Mode from config file: permissive
Policy MLS status: enabled
Policy deny_unknown status: allowed
Memory protection checking: requested (insecure)
Max kernel policy version: 31
The problem does not occur when SELinux is complete disabled.
Please note that a very similar problem occurs using groupadd:
root at ubuntu:~# groupadd tstgrp001
groupadd: failure while writing changes to /etc/group
= journal =
(Please note that there is *no* AVC!)
May 05 05:11:44 ubuntu useradd[756]: new user: name=tst003, UID=1004, GID=100, home=/home/tst003, shell=/bin/sh
May 05 05:11:44 ubuntu audit[756]: ADD_USER pid=756 uid=0 auid=1002 ses=1 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=adding user id=1004 exe="/usr/sbin/useradd" hostname=ubuntu addr=? terminal=pts/0 res=success'
May 05 05:11:44 ubuntu useradd[756]: failure while writing changes to /etc/passwd
May 05 05:11:44 ubuntu audit[756]: ADD_USER pid=756 uid=0 auid=1002 ses=1 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=adding user acct="tst003" exe="/usr/sbin/useradd" hostname=ubuntu addr=? terminal=pts/0 res=failed'
May 05 05:11:44 ubuntu useradd[756]: failed adding user 'tst003', data deleted
= ltrace =
[pid 1074] SYS_write(12, "root:x:"..., 1360) = 1360
[pid 1074] <... fflush resumed> ) = 0
[pid 1074] fileno(0x5595b21c6200) = 12
[pid 1074] fsync(12, 0x5595b21c62e0, 0, 0x7ff933d5c154 <unfinished ...>
[pid 1074] SYS_fsync(12) = 0
[pid 1074] <... fsync resumed> ) = 0
[pid 1074] fclose(0x5595b21c6200 <unfinished ...>
[pid 1074] SYS_close(12) = 0
[pid 1074] <... fclose resumed> ) = 0
[pid 1074] utime(0x7ffee34207e0, 0x7ffee34206b0, 0x5595b21af010, 1 <unfinished ...>
[pid 1074] SYS_utime("/etc/passwd-", 0x7ffee34206b0) = 0
[pid 1074] <... utime resumed> ) = 0
[pid 1074] fclose(0x5595b21af2a0 <unfinished ...>
[pid 1074] SYS_close(5) = 0
[pid 1074] <... fclose resumed> ) = 0
[pid 1074] setfscreatecon(0, 0x5595b21af118, 1, 2 <unfinished ...>
[pid 1074] SYS_openat(0xffffff9c, 0x5595b21cebc0, 0x80002, 0) = 5
[pid 1074] SYS_write(5, nil, 0) = -22
[pid 1074] SYS_close(5) = 0
[pid 1074] <... setfscreatecon resumed> ) = 0xffffffff
[pid 1074] free(0x5595b21b9dc0) = <void>
[pid 1074] free(0x5595b21b8a00) = <void>
[pid 1074] strlen("x") = 1
[pid 1074] memset(0x5595b21b7560, '\0', 1) = 0x5595b21b7560
[pid 1074] free(0x5595b21b7560) = <void>
[pid 1074] free(0x5595b21b94e0) = <void>
[pid 1074] free(0x5595b21b9000) = <void>
[pid 1074] free(0x5595b21b8fc0) = <void>
= strace =
write(12, "root:x:"..., 1360) = 1360
fsync(12) = 0
close(12) = 0
utime("/etc/passwd-", {actime=1525497034 /* 2018-05-05T05:10:34+0000 */, modtime=1525496803 /* 2018-05-05T05:06:43+0000 */}) = 0
close(5) = 0
openat(AT_FDCWD, "/proc/thread-self/attr/fscreate", O_RDWR|O_CLOEXEC) = 5
write(5, NULL, 0) = -1 EINVAL (Invalid argument)
close(5) = 0
= Version Information =
root at ubuntu:~# lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04
root at ubuntu:~# dpkg -l | grep passwd | grep -v base-pa
ii passwd 1:4.5-1ubuntu1 amd64 change and administer password and group data
root at ubuntu:~# dpkg -l | grep selinux
ii libselinux1:amd64 2.7-2build2 amd64 SELinux runtime shared libraries
ii python3-selinux 2.7-2build2 amd64 Python3 bindings to SELinux shared libraries
ii selinux-basics 0.5.6 all SELinux basic support
ii selinux-policy-default 2:2.20180114-1 all Strict and Targeted variants of the SELinux policy
ii selinux-policy-dev 2:2.20180114-1 all Headers from the SELinux reference policy for building modules
ii selinux-utils 2.7-2build2 amd64 SELinux utility programs
root at ubuntu:~# uname -a
Linux ubuntu 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
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