Bug 111704
| Summary: | REGRESSION(r138609): 170 inspector tests crash on ARM Thumb2 | ||
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| Product: | WebKit | Reporter: | Csaba Osztrogonác <ossy> | 
| Component: | New Bugs | Assignee: | Nobody <webkit-unassigned> | 
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Critical | CC: | barraclough, fpizlo, ossy, rgabor, zherczeg | 
| Priority: | P1 | ||
| Version: | 528+ (Nightly build) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Bug Depends on: | |||
| Bug Blocks: | 108645, 79668, 105900 | ||
          Csaba Osztrogonác
          
          
          
          
        
        
      Unfortunately we don't know the exact revision when they started to crash, 
because there is another serious bug which makes all inspector tests crash:
https://bugs.webkit.org/show_bug.cgi?id=111441
See https://bugs.webkit.org/show_bug.cgi?id=108632 for previous testing
(Comment #0 and Comment #1)
I'm going to bisect this regression manually with applying the fix
in https://bugs.webkit.org/show_bug.cgi?id=111441
Results on ToT with the fix from bug111441:
http://build.webkit.sed.hu/builders/ARMv7%20Linux%20Qt5%20Release%20%28Test%29/builds/7987
    | Attachments | ||
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| Add attachment proposed patch, testcase, etc. | 
          Csaba Osztrogonác
          
          
          
          
        
        
      The bug was valid on r140000 - http://build.webkit.sed.hu/builders/ARMv7%20Linux%20Qt5%20Release%20%28Test%29/builds/7992 (only inspector tests was ran here)
    
          Csaba Osztrogonác
          
          
          
          
        
        
      all inspector tests crashed on r139004 - http://build.webkit.sed.hu/builders/ARMv7%20Linux%20Qt5%20Release%20%28Test%29/builds/7993
    
          Csaba Osztrogonác
          
          
          
          
        
        
      all tests crashed on r138500 - http://build.webkit.sed.hu/builders/ARMv7%20Linux%20Qt5%20Release%20%28Test%29/builds/7994
    
          Csaba Osztrogonác
          
          
          
          
        
        
      I got it r138609 is the culprit. It caused this regression
or revealed a hidden bug.
r138608 - http://build.webkit.sed.hu/builders/ARMv7%20Linux%20Qt5%20Release%20%28Test%29/builds/8001
r138609 - http://build.webkit.sed.hu/builders/ARMv7%20Linux%20Qt5%20Release%20%28Test%29/builds/8002
(Of course I applied the fix from https://bugs.webkit.org/show_bug.cgi?id=111441 to unhide this bug)
    
          Csaba Osztrogonác
          
          
          
          
        
        
      It might be similar bug on ARM Thumb2 to this ARM Traditional bug - https://bugs.webkit.org/show_bug.cgi?id=105930
    
          Csaba Osztrogonác
          
          
          
          
        
        
      The proposed fix in https://bugs.webkit.org/show_bug.cgi?id=103146 fixes these crashes.
*** This bug has been marked as a duplicate of bug 103146 ***