220776 2021-01-20 11:34:39 -0800 Fix nullptr dereference introduced in r268228 2021-04-27 14:38:01 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 achristensen achristensen bugmail cdumez feross jhiesey lwarlow webkit-bug-importer oldest_to_newest 1720943 0 achristensen 2021-01-20 11:34:39 -0800 Fix nullptr dereference introduced in r268228 1720945 1 417983 achristensen 2021-01-20 11:36:50 -0800 Created attachment 417983 Patch 1720948 2 417983 cdumez 2021-01-20 11:40:49 -0800 Comment on attachment 417983 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=417983&action=review > Source/WebCore/fileapi/Blob.cpp:274 > + if (bytesLoaded == m_loader->totalBytes()&& !m_bytesRead) nit: missing space before && 1720949 3 417983 cdumez 2021-01-20 11:42:11 -0800 Comment on attachment 417983 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=417983&action=review >> Source/WebCore/fileapi/Blob.cpp:274 >> + if (bytesLoaded == m_loader->totalBytes()&& !m_bytesRead) > > nit: missing space before && Also may want to use FileReaderLoader::isCompleted() for clarity. 1720950 4 417984 achristensen 2021-01-20 11:44:33 -0800 Created attachment 417984 Patch 1720974 5 ews-feeder 2021-01-20 13:10:00 -0800 Committed r271669: <https://trac.webkit.org/changeset/271669> All reviewed patches have been landed. Closing bug and clearing flags on attachment 417984. 1720975 6 webkit-bug-importer 2021-01-20 13:10:15 -0800 <rdar://problem/73417187> 1721053 7 achristensen 2021-01-20 17:26:48 -0800 This was rdar://problem/71627170 1754473 8 jhiesey 2021-04-26 19:08:32 -0700 It is unfortunate that Safari 14.1 shipped with Blob.stream() but without this fix. Our web app, wormhole.app, uses feature detection to determine if Blob.stream() is available, so it broke when Safari 14.1 was released. We had to quickly add a patch to disable using Blob.stream() in Safari, since it would immediately crash the renderer process. If the feature was known to be buggy, I wish it hadn't shipped, or that the fix had been applied before shipping it. We did test in Safari Technology Preview, but it already had this fix applied so we didn't encounter the crash. 1754730 9 cdumez 2021-04-27 11:55:29 -0700 (In reply to John Hiesey from comment #8) > It is unfortunate that Safari 14.1 shipped with Blob.stream() but without > this fix. > > Our web app, wormhole.app, uses feature detection to determine if > Blob.stream() is available, so it broke when Safari 14.1 was released. We > had to quickly add a patch to disable using Blob.stream() in Safari, since > it would immediately crash the renderer process. > > If the feature was known to be buggy, I wish it hadn't shipped, or that the > fix had been applied before shipping it. > > We did test in Safari Technology Preview, but it already had this fix > applied so we didn't encounter the crash. Thanks for bringing this to our attention. We'll look into what happened. 417983 2021-01-20 11:36:50 -0800 2021-01-20 11:44:31 -0800 Patch bug-220776-20210120113649.patch text/plain 5962 achristensen SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDI3MTY2MSkKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDIzIEBACisyMDIxLTAxLTIwICBBbGV4IENo cmlzdGVuc2VuICA8YWNocmlzdGVuc2VuQHdlYmtpdC5vcmc+CisKKyAgICAgICAgRml4IG51bGxw dHIgZGVyZWZlcmVuY2UgaW50cm9kdWNlZCBpbiByMjY4MjI4CisgICAgICAgIGh0dHBzOi8vYnVn cy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0yMjA3NzYKKworICAgICAgICBSZXZpZXdlZCBi eSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBJbnN0ZWFkIG9mIHRha2luZyBkYXRhIGZyb20g dGhlIEZpbGVSZWFkZXJMb2FkZXIsIHdoaWNoIGl0IGFzc3VtZXMgaXQgc3RpbGwgaGFzIGxhdGVy LAorICAgICAgICBvbmx5IGdpdmUgdGhlIGJ5dGVzIHRvIEphdmFTY3JpcHQgdGhhdCBoYXZlIGJl 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