1746416 - Crash in [@ nsTSubstring<T>::Truncate]

Status: RESOLVED FIXED

(Core :: Networking, defect)

Description

[Calixte Denizet (:calixte)]

Maybe Fission related. (DOMFissionEnabled=1)

Crash report: https://crash-stats.mozilla.org/report/index/b0272f60-7b6c-4b96-9496-c73430211216

Reason: EXCEPTION_ACCESS_VIOLATION_READ

Top 10 frames of crashing thread:

0 xul.dll nsTSubstring<char>::Truncate xpcom/string/nsTSubstring.cpp:939
1 xul.dll mozilla::net::ProxyAutoConfig::GetProxyForURI netwerk/base/ProxyAutoConfig.cpp:919
2 xul.dll mozilla::net::ProxyAutoConfigChild::RecvGetProxyForURI netwerk/ipc/ProxyAutoConfigChild.cpp:165
3 xul.dll mozilla::detail::RunnableFunction<`lambda at /builds/worker/checkouts/gecko/netwerk/ipc/ProxyAutoConfigChild.cpp:158:9'>::Run xpcom/threads/nsThreadUtils.h:531
4 xul.dll nsThread::ProcessNextEvent xpcom/threads/nsThread.cpp:1177
5 xul.dll mozilla::ipc::MessagePumpForNonMainThreads::Run ipc/glue/MessagePump.cpp:300
6 xul.dll MessageLoop::RunHandler ipc/chromium/src/base/message_loop.cc:324
7 xul.dll MessageLoop::Run ipc/chromium/src/base/message_loop.cc:306
8 xul.dll static nsThread::ThreadFunc xpcom/threads/nsThread.cpp:391
9 nss3.dll _PR_NativeRunThread nsprpub/pr/src/threads/combined/pruthr.c:399

There are 12 crashes in nightly 97 starting with buildid 20211213214351.
The pushlog for this build is:
https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=0afa754df085&tochange=c9d499871dc8
It could be related to bug 1745385, :kershaw, wdyt ?

Comment 1

[Kershaw Chang [:kershaw]]

This looks like a dup of bug 1746300?
I'll keep the ni for tracking this.

Comment 3

[Kershaw Chang [:kershaw]]

This should be fixed by backing out bug 1745385.