[Webkit-unassigned] [Bug 243880] New: Crash in WebKit::allDataStores

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=243880

            Bug ID: 243880
           Summary: Crash in WebKit::allDataStores
           Product: WebKit
           Version: Safari 15
          Hardware: iPhone / iPad
                OS: iOS 15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Website Storage
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: danielo at opera.com
                CC: sihui_liu at apple.com

We are getting a significant amount of crashes with this stack trace:

Crashed: WebThread
0  WebKit                         0x17c90 WTFCrashWithInfo(int, char const*, char const*, int) + 20
1  WebKit                         0x6af064 WebKit::allDataStores() + 76
2  WebKit                         0x6aef78 WebKit::WebsiteDataStore::forEachWebsiteDataStore(WTF::Function<void (WebKit::WebsiteDataStore&)>&&) + 28
3  WebKit                         0x3f3a88 WebKit::WebProcessPool::updateProcessSuppressionState() + 112
4  WebKit                         0x59f168 WebKit::WebPageProxy::updateThrottleState() + 192
5  WebKit                         0x5ae300 WebKit::WebPageProxy::dispatchActivityStateChange() + 1008
6  CoreFoundation                 0x410c4 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
7  CoreFoundation                 0x10080 __CFRunLoopDoObservers + 592
8  CoreFoundation                 0x1ec1c CFRunLoopRunSpecific + 684
9  WebCore                        0xbe9d3c <redacted> + 760
10 libsystem_pthread.dylib        0x19ac _pthread_start + 148
11 libsystem_pthread.dylib        0xe68 thread_start + 8

All the other threads are idle at the time of the crash.

The crash seems to affect iOS 15.2.0+ and 16.0.0.
It started appearing in late July 2022 for us.

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