247368 2022-11-02 09:22:40 -0700 Crash in gamepads in WKWebView apps that also listen to the GameController framework themselves 2022-11-02 16:28:56 -0700 1 1 1 Unclassified WebKit WebKit Misc. Safari 16 Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 beidson beidson ggaren webkit-bug-importer oldest_to_newest 1909793 0 beidson 2022-11-02 09:22:40 -0700 Crash in gamepads in WKWebView apps that also listen to the GameController framework themselves If an app's UI process uses GameController framework directly before a web page in a WKWebView does, then the GameController framework tells that app about attached controllers ahead of time. This subtlely gets WebKit's notion of attached game controllers out of sync with reality. If the user then moves a joystick on the gamepad to cause input (but not press a button to cause the gamepad to be exposed to the web page) then we crash. (And ASSERT in debug builds) 1909801 1 463363 beidson 2022-11-02 10:05:12 -0700 Created attachment 463363 Patch 1909804 2 beidson 2022-11-02 10:35:06 -0700 <rdar://problem/100036005> 1909805 3 463363 ggaren 2022-11-02 10:38:13 -0700 Comment on attachment 463363 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=463363&action=review r=me > Source/WebKit/UIProcess/Gamepad/UIGamepadProvider.cpp:118 > + for (size_t i = 0; i < m_gamepads.size() && i < platformGamepads.size(); ++i) { You can compute 'auto end = std::min(m_gamepads.size(), platformGamepads.size())' outside the loop. A bit clearer and a bit more efficient. 1909882 4 beidson 2022-11-02 15:03:15 -0700 Pull request: https://github.com/WebKit/WebKit/pull/6054 1909915 5 ews-feeder 2022-11-02 16:28:53 -0700 Committed 256255@main (809586a6b81e): <https://commits.webkit.org/256255@main> Reviewed commits have been landed. Closing PR #6054 and removing active labels. 463363 2022-11-02 10:05:12 -0700 2022-11-02 10:38:13 -0700 Patch bug-247368-20221102100511.patch text/plain 1965 beidson RnJvbSBiMTc1ZmQ3NTQxMmM0ZDVjZTE2MjE3ZmMxZjU0NjBlMzAwZDEwZGE5IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBCcmFkeSBFaWRzb24gPGJlaWRzb25AYXBwbGUuY29tPgpEYXRl OiBXZWQsIDIgTm92IDIwMjIgMDk6NDA6NDAgLTA3MDAKU3ViamVjdDogW1BBVENIXSBDcmFzaCBp biBnYW1lcGFkcyBpbiBXS1dlYlZpZXcgYXBwcyB0aGF0IGFsc28gbGlzdGVuIHRvIHRoZQogR2Ft ZUNvbnRyb2xsZXIgZnJhbWV3b3JrIHRoZW1zZWx2ZXMuIHJkYXI6Ly8xMDAwMzYwMDUgYW5kCiBo dHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MjQ3MzY4CgpSZXZpZXdlZCBi eSBOT0JPRFkgKE9PUFMhKS4KCk5vIHRlc3QgcG9zc2libGUgZm9yIG5vdy4KCiogU291cmNlL1dl YktpdC9VSVByb2Nlc3MvR2FtZXBhZC9VSUdhbWVwYWRQcm92aWRlci5jcHA6CihXZWJLaXQ6OlVJ R2FtZXBhZFByb3ZpZGVyOjpwbGF0Zm9ybUdhbWVwYWRJbnB1dEFjdGl2aXR5KTogSGFuZGxlIGEg bWlzbWF0Y2ggYmV0d2VlbiBwbGF0Zm9ybSBnYW1lcGFkcwogIGFuZCBlc3RhYmxpc2hlZCBnYW1l cGFkcy4gVGhpcyBjYW4gaGFwcGVuIHdoZW4gdGhlcmUncyAiaW52aXNpYmxlIiBnYW1lcGFkcyBz dGlsbCwgYW5kIHRoZSBjdXJyZW50CiAgaW5wdXQgZXZlbnQgd2lsbCBub3QgcmV2ZWFsIHRoZW0g dG8gV2ViQ29udGVudC4gQW5kIGl0J3MgZmluZTogVGhpbmdzIGdldCByZXNvbHZlZCB3aGVuIGFu IGlucHV0CiAgZXZlbiAqZG9lcyogcmV2ZWFsIHRoZSBnYW1lcGFkcyB0byB0aGUgd2ViIHBhZ2Uu Ci0tLQogU291cmNlL1dlYktpdC9VSVByb2Nlc3MvR2FtZXBhZC9VSUdhbWVwYWRQcm92aWRlci5j cHAgfCA4ICsrLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgMiBpbnNlcnRpb25zKCspLCA2IGRlbGV0 aW9ucygtKQoKZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJLaXQvVUlQcm9jZXNzL0dhbWVwYWQvVUlH YW1lcGFkUHJvdmlkZXIuY3BwIGIvU291cmNlL1dlYktpdC9VSVByb2Nlc3MvR2FtZXBhZC9VSUdh bWVwYWRQcm92aWRlci5jcHAKaW5kZXggODU2NjJjYzJiMzc0Li41NmU2ZDA2ZWY4NTMgMTAwNjQ0 Ci0tLSBhL1NvdXJjZS9XZWJLaXQvVUlQcm9jZXNzL0dhbWVwYWQvVUlHYW1lcGFkUHJvdmlkZXIu Y3BwCisrKyBiL1NvdXJjZS9XZWJLaXQvVUlQcm9jZXNzL0dhbWVwYWQvVUlHYW1lcGFkUHJvdmlk ZXIuY3BwCkBAIC0xMTQsMTUgKzExNCwxMSBAQCB2b2lkIFVJR2FtZXBhZFByb3ZpZGVyOjpwbGF0 Zm9ybUdhbWVwYWREaXNjb25uZWN0ZWQoUGxhdGZvcm1HYW1lcGFkJiBnYW1lcGFkKQogdm9pZCBV SUdhbWVwYWRQcm92aWRlcjo6cGxhdGZvcm1HYW1lcGFkSW5wdXRBY3Rpdml0eShFdmVudE1ha2Vz R2FtZXBhZHNWaXNpYmxlIGV2ZW50VmlzaWJpbGl0eSkKIHsKICAgICBhdXRvIHBsYXRmb3JtR2Ft ZXBhZHMgPSBHYW1lcGFkUHJvdmlkZXI6OnNpbmdsZXRvbigpLnBsYXRmb3JtR2FtZXBhZHMoKTsK LSAgICBBU1NFUlQocGxhdGZvcm1HYW1lcGFkcy5zaXplKCkgPT0gbV9nYW1lcGFkcy5zaXplKCkp OwogCi0gICAgZm9yIChzaXplX3QgaSA9IDA7IGkgPCBwbGF0Zm9ybUdhbWVwYWRzLnNpemUoKTsg KytpKSB7Ci0gICAgICAgIGlmICghcGxhdGZvcm1HYW1lcGFkc1tpXSkgewotICAgICAgICAgICAg QVNTRVJUKCFtX2dhbWVwYWRzW2ldKTsKKyAgICBmb3IgKHNpemVfdCBpID0gMDsgaSA8IG1fZ2Ft ZXBhZHMuc2l6ZSgpICYmIGkgPCBwbGF0Zm9ybUdhbWVwYWRzLnNpemUoKTsgKytpKSB7CisgICAg ICAgIGlmICghbV9nYW1lcGFkc1tpXSB8fCAhcGxhdGZvcm1HYW1lcGFkc1tpXSkKICAgICAgICAg ICAgIGNvbnRpbnVlOwotICAgICAgICB9CiAKLSAgICAgICAgQVNTRVJUKG1fZ2FtZXBhZHNbaV0p OwogICAgICAgICBtX2dhbWVwYWRzW2ldLT51cGRhdGVGcm9tUGxhdGZvcm1HYW1lcGFkKCpwbGF0 Zm9ybUdhbWVwYWRzW2ldKTsKICAgICB9CiAK