Bug: High frequency FATAL ERROR: Non-local network connections are disabled and a connection attempt to firefox.settings.services.mozilla.com (52.85.132.97) was made.
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2021-06-04 16:08:03+00:00
Resolved: 2023-08-28 06:29:17+00:00

**Filed by:** abutkovits [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=341771896&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/MrOkzgg3ROCCOUdX299fYQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-06-04T15:41:12.064Z] 15:41:12     INFO -  TEST-PASS | netwerk/test/unit/test_http2-proxy.js | proxy_bad_gateway_failure_isolated - [proxy_bad_gateway_failure_isolated : 609] "undefined" == "undefined"
[task 2021-06-04T15:41:12.064Z] 15:41:12     INFO -  TEST-PASS | netwerk/test/unit/test_http2-proxy.js | proxy_bad_gateway_failure_isolated - [proxy_bad_gateway_failure_isolated : 610] No new session created by 502 - 2 == 2
[task 2021-06-04T15:41:12.064Z] 15:41:12     INFO -  (xpcshell/head.js) | test run_next_test 12 pending (2)
[task 2021-06-04T15:41:12.064Z] 15:41:12     INFO -  (xpcshell/head.js) | test proxy_bad_gateway_failure_isolated finished (2)
[task 2021-06-04T15:41:12.064Z] 15:41:12     INFO -  (xpcshell/head.js) | test run_next_test 12 finished (1)
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  exiting test
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 | FATAL ERROR: Non-local network connections are disabled and a connection attempt to firefox.settings.services.mozilla.com (52.85.132.97) was made.
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 | You should only access hostnames available via the test networking proxy (if running mochitests) or from a test-specific httpd.js server (if running xpcshell tests). Browser services should be disabled or redirected to a local server.
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 | AddressSanitizer:DEADLYSIGNAL
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 | =================================================================
[task 2021-06-04T15:41:12.065Z] 15:41:12    ERROR -  PID 22665 | ==22665==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000001 (pc 0x7f8509ae6343 bp 0x7f84f524bff0 sp 0x7f84f524b820 T4)
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 | ==22665==The signal is caused by a WRITE memory access.
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 | ==22665==Hint: address points to the zero page.
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 |     #0 0x7f8509ae6343 in mozilla::net::nsSocketTransport::InitiateSocket() /builds/worker/checkouts/gecko/netwerk/base/nsSocketTransport2.cpp:1276:7
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 |     #1 0x7f8509aeb5a9 in mozilla::net::nsSocketTransport::OnSocketEvent(unsigned int, nsresult, nsISupports*) /builds/worker/checkouts/gecko/netwerk/base/nsSocketTransport2.cpp:2024:22
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 |     #2 0x7f8509b30cca in mozilla::net::nsSocketEvent::Run() /builds/worker/checkouts/gecko/netwerk/base/nsSocketTransport2.cpp:94:17
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 |     #3 0x7f85097a6fea in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1153:16
[task 2021-06-04T15:41:12.065Z] 15:41:12     INFO -  PID 22665 |     #4 0x7f85097b14fc in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:548:10
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #5 0x7f8509afbd41 in mozilla::net::nsSocketTransportService::Run() /builds/worker/checkouts/gecko/netwerk/base/nsSocketTransportService2.cpp:1204:11
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #6 0x7f8509afd9ec in non-virtual thunk to mozilla::net::nsSocketTransportService::Run() /builds/worker/checkouts/gecko/netwerk/base/nsSocketTransportService2.cpp
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #7 0x7f85097a6fea in nsThread::ProcessNextEvent(bool, bool*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:1153:16
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #8 0x7f85097b14fc in NS_ProcessNextEvent(nsIThread*, bool) /builds/worker/checkouts/gecko/xpcom/threads/nsThreadUtils.cpp:548:10
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #9 0x7f850a8404b8 in mozilla::ipc::MessagePumpForNonMainThreads::Run(base::MessagePump::Delegate*) /builds/worker/checkouts/gecko/ipc/glue/MessagePump.cpp:300:20
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #10 0x7f850a769981 in RunInternal /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:335:10
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #11 0x7f850a769981 in RunHandler /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:328:3
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #12 0x7f850a769981 in MessageLoop::Run() /builds/worker/checkouts/gecko/ipc/chromium/src/base/message_loop.cc:310:3
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #13 0x7f85097a0ab2 in nsThread::ThreadFunc(void*) /builds/worker/checkouts/gecko/xpcom/threads/nsThread.cpp:395:10
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #14 0x7f852107345e in _pt_root /builds/worker/checkouts/gecko/nsprpub/pr/src/pthreads/ptthread.c:201:5
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #15 0x7f8520c7d6da in start_thread /build/glibc-2ORdQG/glibc-2.27/nptl/pthread_create.c:463
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 |     #16 0x7f8502fa4a3e in clone /build/glibc-2ORdQG/glibc-2.27/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 | AddressSanitizer can not provide additional info.
[task 2021-06-04T15:41:12.066Z] 15:41:12     INFO -  PID 22665 | SUMMARY: AddressSanitizer: SEGV /builds/worker/checkouts/gecko/netwerk/base/nsSocketTransport2.cpp:1276:7 in mozilla::net::nsSocketTransport::InitiateSocket()
```