alfred-valve
commented
11 years ago Can you attach gdb when you have this hang and the provide us with a backtrace of the problem please.
Closed isi-floss closed 11 years ago
alfred-valve
commented
11 years ago Can you attach gdb when you have this hang and the provide us with a backtrace of the problem please.
isi-floss
commented
11 years ago From CS:CZ
(gdb) bt
#0 0xf7766425 in __kernel_vsyscall ()
#1 0x45afc8ab in write () from /lib/libc.so.6
#2 0x45a86711 in _IO_new_file_write () from /lib/libc.so.6
#3 0x45a8703f in __GI__IO_file_xsputn () from /lib/libc.so.6
#4 0x45a5f297 in buffered_vfprintf () from /lib/libc.so.6
#5 0x45a5aa95 in vfprintf () from /lib/libc.so.6
#6 0x45a6404f in fprintf () from /lib/libc.so.6
#7 0xf5ef6515 in Sys_Printf (fmt=0xf60371b2 "%s") at ../engine/sys_dll.c:641
#8 0xf5fa2563 in Con_Printf (fmt=0xf60417f8 "MP3 startup failed due, mp3 playback will not be available.\n") at ../engine/CONSOLE.C:445
#9 0xf5fbbaf5 in CCDAudio::MP3_Init (this=0xf6714d40 <g_CDAudio>) at ../engine/cd.cpp:1341
#10 0xf5fbc1b8 in CCDAudio::MP3_InitStream (this=0xf6715424 <g_Thread+4>, trackNum=1170128786, looping=false) at ../engine/cd.cpp:1504
#11 0x00552897 in ?? ()When the hang occurs, the console where I started steam is spammed with the following message: "MP3 startup failed due, mp3 playback will not be available."
The hang also occurs when I change resolutions.
It is an SELinux problem. When I set SELinux to permissive, there is no problem and the music in the CS:CZ main menu plays. With SELinux set to enforcing, there is no music.
SELinux is preventing /home/isi/.local/share/Steam/SteamApps/common/Half-Life/hl_linux from using the execheap access on a process.
***** Plugin allow_execheap (53.1 confidence) suggests *********************
If you do not think /home/isi/.local/share/Steam/SteamApps/common/Half-Life/hl_linux should need to map heap memory that is both writable and executable.
Then you need to report a bug. This is a potentially dangerous access.
Do
contact your security administrator and report this issue.
***** Plugin catchall_boolean (42.6 confidence) suggests *******************
If you want to allow unconfined executables to make their heap memory executable. Doing this is a really bad idea. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla
Then you must tell SELinux about this by enabling the 'selinuxuser_execheap' boolean.
You can read 'unconfined_selinux' man page for more details.
Do
setsebool -P selinuxuser_execheap 1
***** Plugin catchall (5.76 confidence) suggests ***************************
If you believe that hl_linux should be allowed execheap access on processes labeled unconfined_t by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep hl_linux /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp
Additional Information:
Source Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
023
Target Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
023
Target Objects [ process ]
Source hl_linux
Source Path /home/isi/.local/share/Steam/SteamApps/common
/Half-Life/hl_linux
Port <Unknown>
Host nupc
Source RPM Packages
Target RPM Packages
Policy RPM selinux-policy-3.12.1-73.fc19.noarch
Selinux Enabled True
Policy Type targeted
Enforcing Mode Enforcing
Host Name nupc
Platform Linux nupc 3.10.9-200.fc19.x86_64 #1 SMP Wed Aug
21 19:27:58 UTC 2013 x86_64 x86_64
Alert Count 5
First Seen 2013-08-29 16:25:25 CEST
Last Seen 2013-08-29 16:37:26 CEST
Local ID b966060d-9d32-4aaf-9d6e-81619b31f5e9
Raw Audit Messages
type=AVC msg=audit(1377787046.869:589): avc: denied { execheap } for pid=16364 comm="hl_linux" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process
type=SYSCALL msg=audit(1377787046.869:589): arch=i386 syscall=capget success=no exit=EACCES a0=a54c000 a1=c000 a2=7 a3=ffb22dcc items=0 ppid=16361 pid=16364 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 fsgid=1000 ses=1 tty=pts4 comm=hl_linux exe=/home/isi/.local/share/Steam/SteamApps/common/Half-Life/hl_linux subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
Hash: hl_linux,unconfined_t,unconfined_t,process,execheapSo not a bug then, due to SELinux?
isi-floss
commented
11 years ago That depends on whom you ask. Issue https://github.com/ValveSoftware/steam-for-linux/issues/43 should be the first report of this issue. IMO it is a bug.
alfred-valve
commented
11 years ago The answer is covered by that bug then.
Problem: CS:CZ and CZ:DS often hang on exit. After clicking on exit the menu disappears, but the background image stays. Then I can only killall -9 hl_linux to force exit.
Reproduction: Start CS:CZ or CZ:DS Play a bit Exit Now it often hangs
System information:
Versions: CS:CZ ] version Protocol version 48 Exe version 1.0.0.3/Stdio (czero) Exe build: 10:03:29 Aug 8 2013 (6132)
CZ:DS ] version Protocol version 48 Exe version 1.0.0.0/Stdio (czeror) Exe build: 10:03:29 Aug 8 2013 (6132)