[Webkit-unassigned] [Bug 15087] New: REGRESSION: crashes in ResourceHandle::client() on a secondary thread

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=15087

           Summary: REGRESSION: crashes in ResourceHandle::client() on a
                    secondary thread
           Product: WebKit
           Version: 522+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: Regression, NeedsRadar
          Severity: Normal
          Priority: P1
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org


WebKit nightlies sometimes crash for me in ResourceHandle::client(). The crash
isn't reliably reproducible, but the stack trace immediately shows what the
problem is - NSURLConnection calls its delegate on a secondary thread.

So, this seems to be an NSURLConnection bug. However, it didn't cause crashes
(that often?) for us before, and it can be worked around by forwarding delegate
methods to the main thread, so it IMO makes sense to track it in both Radar and
Bugzilla. Perhaps a null check would be an adequate fix, too.

Thread 1 Crashed:
0   com.apple.WebCore           0x01414850 WebCore::ResourceHandle::client()
const + 0
1   com.apple.Foundation        0x92c37d70
-[NSURLConnection(NSURLConnectionInternal) _didFinishReturnCachedResponse:] +
524
2   com.apple.Foundation        0x92c0f01c -[NSConnectionHTTPURLProtocol
attemptRetryAfter3xxResponse] + 540
3   com.apple.Foundation        0x92d2235c -[NSConnectionHTTPURLProtocol
performHTTPHeaderRead] + 696
4   com.apple.Foundation        0x92c0e844 readStreamCallback2 + 592
5   com.apple.CoreFoundation    0x9082af3c _CFStreamSignalEventSynch + 332
6   com.apple.CoreFoundation    0x907de4fc __CFRunLoopDoSources0 + 384


-- 
Configure bugmail: http://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.