Bug 1364917 - gnome-shell and gnome-settings-daemon use 100% CPU time
Summary: gnome-shell and gnome-settings-daemon use 100% CPU time
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: pcsc-lite
Version: 25
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Bob Relyea
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-08-08 08:12 UTC by Petr Lautrbach
Modified: 2017-12-12 10:27 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2017-12-12 10:27:39 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)

Description Petr Lautrbach 2016-08-08 08:12:21 UTC
Description of problem:
I use a yubikey as a smart card and when the yubikey is not inserted in a usb port, gnome-shell and gnome-sessings-daemon run on 100% CPU

Version-Release number of selected component (if applicable):
gnome-shell-3.21.4-1.fc25.x86_64
gnome-settings-daemon-3.20.1-3.fc25.x86_64


Actual results:

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                                                       
 1685 root      20   0  577336   5200   4224 S  98.0  0.1  45:52.13 pcscd                                                                                                                                         
 1796 plautrba  20   0 2022136 164348  68728 R  96.7  2.1  18:55.47 gnome-shell                                                                                                                                   
 1979 plautrba  20   0 1779552  47396  34992 S  53.1  0.6  26:31.49 gnome-settings-                                                                                                                               
 1623 gdm       20   0 1364144  38532  29024 S  52.1  0.5  20:50.09 gnome-settings-                
  


Expected results:


Additional info:

Comment 1 Jakub Jelen 2016-08-15 12:31:19 UTC
Same here with SCM Microsystems, Inc. SCR331-LC1 / SCR3310 SmartCard Reader. It works fine, until I connect the :

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND          
 2182 jjelen    20   0 1356968  45596  33720 S  61.5  0.4  78:36.69 gnome-settings-    
 1901 root      20   0  808640   5276   4108 S  57.1  0.0  73:05.20 pcscd          

Before updating to F24 it worked just fine.

gnome-settings-daemon-3.20.1-3.fc24.x86_64
pcsc-lite-1.8.17-2.fc24.x86_64

PCSCD service reports errors:

# systemctl status pcscd
Aug 12 11:06:02 jjelen.redhat.com systemd[1]: Started PC/SC Smart Card Daemon.
Aug 15 10:59:39 jjelen.redhat.com pcscd[1901]: 00000000 ccid_usb.c:783:WriteUSB() write failed (2/15): -4 LIBUSB_ERROR_NO_DEVICE
Aug 15 10:59:39 jjelen.redhat.com pcscd[1901]: 00009350 winscard.c:260:SCardConnect() Reader SCM Microsystems Inc. SCR 3310 [CCID Interface] (21121230224464) 00 00 Not Found

Comment 2 Jakub Jelen 2016-08-15 12:32:50 UTC
*until I connect the card reader for the first time and disconnect it

Comment 3 Jakub Jelen 2016-11-29 17:04:32 UTC
seems to be related to pcsc-lite, more than to gnome. Lets try to update to the latest version if it is going to help.

Comment 4 Jakub Jelen 2016-12-05 14:16:14 UTC
Still reproducible with the latest update from testing:
pcsc-lite-1.8.18-1.fc25.x86_64

Backtrace from cycling process:

(gdb) bt
#0  0x00007f125384bd63 in select () at /lib64/libc.so.6
#1  0x0000564f93ae43fd in ProcessEventsServer (pdwClientID=0x7ffeeafa24d4) at winscard_msg_srv.c:223
#2  0x0000564f93ad4e07 in SVCServiceRunLoop () at pcscdaemon.c:128
#3  0x0000564f93ad4e07 in main (argc=3, argv=<optimized out>) at pcscdaemon.c:793
(gdb) frame 1
#1  0x0000564f93ae43fd in ProcessEventsServer (pdwClientID=0x7ffeeafa24d4) at winscard_msg_srv.c:223
223		selret = select(commonSocket + 1, &read_fd, (fd_set *) NULL,
(gdb) info locals
read_fd = {__fds_bits = {8, 0 <repeats 15 times>}}
selret = <optimized out>
__FUNCTION__ = "ProcessEventsServer"
(gdb) list
218		/*
219		 * Set up the bit masks for select
220		 */
221		FD_SET(commonSocket, &read_fd);
222	
223		selret = select(commonSocket + 1, &read_fd, (fd_set *) NULL,
224			(fd_set *) NULL,
225	#ifdef DO_TIMEOUT
226			&tv
227	#else

Comment 5 Min Tun 2017-03-08 09:24:13 UTC
I'm running into the same issues. Looks like its the coolkey package causing this. Once this package is removed the problem goes away. see https://bugzilla.redhat.com/show_bug.cgi?id=1430268

Comment 6 Fedora End Of Life 2017-11-16 18:54:53 UTC
This message is a reminder that Fedora 25 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
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Comment 7 Fedora End Of Life 2017-12-12 10:27:39 UTC
Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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