Bug 224121 - REGRESSION: [ EWS iOS wk2 ] css2.1/20110323/replaced-intrinsic-ratio-001.htm is a flakey text failure
Summary: REGRESSION: [ EWS iOS wk2 ] css2.1/20110323/replaced-intrinsic-ratio-001.htm ...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2021-04-02 11:59 PDT by Robert Jenner
Modified: 2021-04-06 16:26 PDT (History)
5 users (show)

See Also:


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Robert Jenner 2021-04-02 11:59:15 PDT
css2.1/20110323/replaced-intrinsic-ratio-001.htm

is a flakey text failure on wk2 EWS and iOS.

HISTORY URL:
https://results.webkit.org/?suite=layout-tests&test=css2.1%2F20110323%2Freplaced-intrinsic-ratio-001.htm

EWS URL:
https://ews-build.webkit.org/#/builders/51/builds/10475 

TEXT DIFF:
               RenderSVGPath {path} at (26,8) size 124x28 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
       RenderBlock {P} at (1,337) size 240x16
         RenderEmbeddedObject {OBJECT} at (16,0) size 208x76 [bgcolor=#FF0000] [border: (16px solid #0000FF)]
-          layer at (0,0) size 176x44
-            RenderView at (0,0) size 176x44
-          layer at (0,0) size 176x44
-            RenderSVGRoot {svg} at (0,0) size 176x44
-              RenderSVGRect {rect} at (0,0) size 176x44 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
-              RenderSVGPath {path} at (26,8) size 124x28 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
+          layer at (0,0) size 300x150
+            RenderView at (0,0) size 300x150
+          layer at (0,0) size 300x150
+            RenderSVGRoot {svg} at (0,0) size 300x77
+              RenderSVGRect {rect} at (0,0) size 300x77 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
+              RenderSVGPath {path} at (45,15) size 210x45 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
       RenderTable at (1,449) size 240x79
         RenderTableSection (anonymous) at (0,0) size 240x79
           RenderTableRow (anonymous) at (0,0) size 240x79
             RenderTableCell {P} at (0,0) size 240x79 [r=0 c=0 rs=1 cs=1]
               RenderEmbeddedObject {OBJECT} at (16,0) size 208x76 [bgcolor=#FF0000] [border: (16px solid #0000FF)]
-                layer at (0,0) size 176x44
-                  RenderView at (0,0) size 176x44
-                layer at (0,0) size 176x44
-                  RenderSVGRoot {svg} at (0,0) size 176x44
-                    RenderSVGRect {rect} at (0,0) size 176x44 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
-                    RenderSVGPath {path} at (26,8) size 124x28 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
+                layer at (0,0) size 300x150
+                  RenderView at (0,0) size 300x150
+                layer at (0,0) size 300x150
+                  RenderSVGRoot {svg} at (0,0) size 300x77
+                    RenderSVGRect {rect} at (0,0) size 300x77 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
+                    RenderSVGPath {path} at (45,15) size 210x45 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
       RenderTable {TABLE} at (1,624) size 240x79
         RenderTableSection {TBODY} at (0,0) size 240x79
           RenderTableRow {TR} at (0,0) size 240x79
             RenderTableCell {TD} at (0,0) size 240x79 [r=0 c=0 rs=1 cs=1]
               RenderEmbeddedObject {OBJECT} at (16,0) size 208x76 [bgcolor=#FF0000] [border: (16px solid #0000FF)]
-                layer at (0,0) size 176x44
-                  RenderView at (0,0) size 176x44
-                layer at (0,0) size 176x44
-                  RenderSVGRoot {svg} at (0,0) size 176x44
-                    RenderSVGRect {rect} at (0,0) size 176x44 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
-                    RenderSVGPath {path} at (26,8) size 124x28 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
+                layer at (0,0) size 300x150
+                  RenderView at (0,0) size 300x150
+                layer at (0,0) size 300x150
+                  RenderSVGRoot {svg} at (0,0) size 300x77
+                    RenderSVGRect {rect} at (0,0) size 300x77 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
+                    RenderSVGPath {path} at (45,15) size 210x45 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
       RenderBlock (floating) {P} at (1,799) size 240x16
         RenderEmbeddedObject {OBJECT} at (16,0) size 208x76 [bgcolor=#FF0000] [border: (16px solid #0000FF)]
-          layer at (0,0) size 176x44
-            RenderView at (0,0) size 176x44
-          layer at (0,0) size 176x44
-            RenderSVGRoot {svg} at (0,0) size 176x44
-              RenderSVGRect {rect} at (0,0) size 176x44 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
-              RenderSVGPath {path} at (26,8) size 124x28 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
+          layer at (0,0) size 300x150
+            RenderView at (0,0) size 300x150
+          layer at (0,0) size 300x150
+            RenderSVGRoot {svg} at (0,0) size 300x77
+              RenderSVGRect {rect} at (0,0) size 300x77 [stroke={[type=SOLID] [color=#008000] [stroke width=12.00]}] [fill={[type=SOLID] [color=#00FF00]}] [x=0.00] [y=0.00] [width=1000.00] [height=250.00]
+              RenderSVGPath {path} at (45,15) size 210x45 [fill={[type=SOLID] [color=#008000]}] [data="M 500 50 L 150 200 L 850 200 Z"]
Comment 1 Radar WebKit Bug Importer 2021-04-02 12:13:26 PDT
<rdar://problem/76158718>
Comment 2 Robert Jenner 2021-04-02 12:28:55 PDT
Was able to reproduce the failure at iOS 14 Simulator Release ToT using the following test:

run-webkit-tests --ios-simulator --iterations 1000 -f css2.1/20110323/replaced-intrinsic-ratio-001.htm

The test is flakey, and I can't bisect to a specific regression point because there are a lot of revisions that did not get built that I would need in order narrow down where it started. The first failure occurred at r275303. The closest available build to that was r275285, and when I tested on that build, I could not reproduce the failure.. 


I suspect a change was introduced somewhere between r275303 and r275285 that caused the test to start flakey failing, but I'm not sure which one.
Comment 3 Robert Jenner 2021-04-02 13:25:14 PDT
Updated test expectations here to Pass Failure:

https://trac.webkit.org/changeset/275435/webkit
Comment 4 Alexey Proskuryakov 2021-04-06 10:33:56 PDT
This test doesn't appear to have any potentially flaky content like timers, so this has to be a layout stability regression.