2031243 - Intermittent TV modules/libjar/test/unit/test_bug1550815.js | xpcshell return code: -7

Status: RESOLVED FIXED

(Core :: Networking: JAR, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: agoloman [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=559648133&repo=autoland&task=J6bWcR0xTVapA0BEzTHqFQ.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/J6bWcR0xTVapA0BEzTHqFQ/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/default/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/J6bWcR0xTVapA0BEzTHqFQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

[task 2026-04-13T09:00:41.212+00:00] 09:00:41     INFO - TEST-START | modules/libjar/test/unit/test_bug1550815.js
[task 2026-04-13T09:00:41.516+00:00] 09:00:41     INFO - TEST-UNEXPECTED-FAIL | modules/libjar/test/unit/test_bug1550815.js | xpcshell return code: -7
[task 2026-04-13T09:00:41.516+00:00] 09:00:41     INFO - TEST-INFO took 305ms
[task 2026-04-13T09:00:41.516+00:00] 09:00:41     INFO - >>>>>>> Begin of full log for modules/libjar/test/unit/test_bug1550815.js
[task 2026-04-13T09:00:41.517+00:00] 09:00:41     INFO - (xpcshell/head.js) | test MAIN run_test pending (1)
[task 2026-04-13T09:00:41.518+00:00] 09:00:41     INFO - (xpcshell/head.js) | test run_next_test 0 pending (2)
[task 2026-04-13T09:00:41.518+00:00] 09:00:41     INFO - (xpcshell/head.js) | test MAIN run_test finished (2)
[task 2026-04-13T09:00:41.519+00:00] 09:00:41     INFO - running event loop
[task 2026-04-13T09:00:41.519+00:00] 09:00:41     INFO - modules/libjar/test/unit/test_bug1550815.js | Starting test_truncate
[task 2026-04-13T09:00:41.520+00:00] 09:00:41     INFO - (xpcshell/head.js) | test test_truncate pending (2)
[task 2026-04-13T09:00:41.521+00:00] 09:00:41     INFO - TEST-PASS | modules/libjar/test/unit/test_bug1550815.js | test_truncate - [test_truncate : 27] 2152857618 == 2152857618
[task 2026-04-13T09:00:41.521+00:00] 09:00:41     INFO - (xpcshell/head.js) | test run_next_test 0 finished (2)
[task 2026-04-13T09:00:41.522+00:00] 09:00:41     INFO - (xpcshell/head.js) | test run_next_test 1 pending (2)
[task 2026-04-13T09:00:41.522+00:00] 09:00:41     INFO - (xpcshell/head.js) | test test_truncate finished (2)
[task 2026-04-13T09:00:41.523+00:00] 09:00:41     INFO - "CONSOLE_MESSAGE: (info) No chrome package registered for chrome://branding/locale/brand.properties"
[task 2026-04-13T09:00:41.523+00:00] 09:00:41     INFO - modules/libjar/test/unit/test_bug1550815.js | Starting test_inner
[task 2026-04-13T09:00:41.524+00:00] 09:00:41     INFO - (xpcshell/head.js) | test test_inner pending (2)
[task 2026-04-13T09:00:41.524+00:00] 09:00:41     INFO - <<<<<<< End of full log for modules/libjar/test/unit/test_bug1550815.js
[task 2026-04-13T09:00:41.525+00:00] 09:00:41     INFO - TEST-START | modules/libjar/test/unit/test_bug1550815.js

Comment 2

[Valentin Gosu [:valentin] {{ IETF until 25 July - PTO until 3 August }}]

The issue seems to be that MmapSIGBUSHandler calls siglongjmp to escape the SIGBUS, but TSAN wraps signal delivery internally and doesn't support non-local jumps out of signal handlers — siglongjmp from within a TSAN-intercepted signal handler corrupts TSAN's internal state, causing the crash. I think it's fine to just skip this test on TSAN.

Comment 3

[Valentin Gosu [:valentin] {{ IETF until 25 July - PTO until 3 August }}]

Attachment: Bug 2031243 - Skip test_bug1550815.js under tsan r=#necko

MmapSIGBUSHandler calls siglongjmp to escape the SIGBUS, but TSAN wraps signal
delivery internally and doesn't support non-local jumps out of signal handlers.

We skip this test under tsan.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/c2823807de7e
https://hg.mozilla.org/integration/autoland/rev/96cfd7ae68df
Skip test_bug1550815.js under tsan r=necko-reviewers,kershaw

Comment 5

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/96cfd7ae68df

Comment 6

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Table

	no_variant
linux2404-x86_64/tsan	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2031243&startday=2026-04-08&endday=2026-04-14&tree=all

Comment 7

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Table

	no_variant
linux2404-x86_64/tsan	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2031243&startday=2026-04-13&endday=2026-04-19&tree=all