Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1637677

Summary: [abrt] gnome-shell: raise(): gnome-shell killed by SIGTRAP, maybe related to libst blur_pixels
Product: Red Hat Enterprise Linux 7 Reporter: Paulo Andrade <pandrade>
Component: gnome-shellAssignee: Florian Müllner <fmuellner>
Status: CLOSED WONTFIX QA Contact: Desktop QE <desktop-qa-list>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.5CC: aubin.guillemette, cww, jadahl
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-12 14:55:03 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Paulo Andrade 2018-10-09 18:26:17 UTC 
Customer is experiencing bug #1526164 that should have been fixed in
https://src.fedoraproject.org/cgit/rpms/gnome-shell.git/commit/?h=f27&id=76c9c60c2d35a28fed835ae6da937e935366d3a5
  The crash matches the pattern in the f27 report. While not understanding
some internals, it appears it is using a released object, with memory
likely reused for something else:

(gdb) frame 10
#10 0x00007f04e2b2fe1d in _st_create_shadow_pipeline (
    shadow_spec=shadow_spec@entry=0x4aa2c40, 
    src_texture=src_texture@entry=0x11ecf70) at st/st-private.c:372
372	  pixels_out = blur_pixels (pixels_in, width_in, height_in, rowstride_in,
(gdb) p shadow_spoec
No symbol "shadow_spoec" in current context.
(gdb) p shadow_spec
$1 = (StShadow *) 0x4aa2c40
(gdb) p* shadow_spec
$2 = {color = {red = 0 '\000', green = 0 '\000', blue = 0 '\000', 
    alpha = 0 '\000'}, xoffset = 0, yoffset = 0, blur = 33554432.000000253, 
  spread = 33554440.1875, inset = 1098907648, ref_count = 0}
(gdb) 

because it sues shadow_spec->blur to calculate the image size, it ends
up requesting a huge amount of memory...

257	  sigma = blur / 2.;
[...]
273	      n_values = (gint) 5 * sigma;
274	      half = n_values / 2;
275	
276	      *width_out  = width_in  + 2 * half;
277	      *height_out = height_in + 2 * half;
278	      *rowstride_out = (*width_out + 3) & ~3;
279	
280	      pixels_out = g_malloc0 (*rowstride_out * *height_out);
281	      line       = g_malloc0 (*rowstride_out);
282	
(gdb) p *width_out
$3 = 83886096
(gdb) p *height_out
$4 = 83886096
(gdb) p width_in
$5 = 16
(gdb) p height_in
$6 = 16