Bug 1633342 Comment 16 Edit History

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Hello Kim,
Thanks for weighing in and pointing out the issues in 79. It helps to identify some regression.

I take a look for the first 50 crashes at the stack of [@shutdownhang | mozilla::net::nsHttpConnectionMgr::Shutdown](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T19%3A49%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) in beta.  
I believe HTTP3 and nss are new crashes which is not covered in bug 1158189. 
This crashes could be eased to <20% once we have those fixed.
Another 10% of crashes are from haning in poll.
bug 1435962 comment 3 showes it could be a network driver bug.
We could address the last mile once later. However, we don't have much things to do with haning Poll.

I don't have strong feeling that it would be solved by not spinning main thread.
HTTP3 are mostly owing to slow string operation and nss lives in non-main thread.
If we don't spin the main thread loop, it still crashes or hangs elsewhere.
I'll ni? dragana, who chases this crashes for a long time, in the next comment for more input.
And file the responding bug to each components. 

I list the crashes reported which I triaged at the bottom of this comment.
And I take another look on [the crashes in nightly](https://crash-stats.mozilla.org/signature/?product=Firefox&version=80.0a1&signature=shutdownhang%20%7C%20__pthread_cond_wait%20%7C%20%3Cname%20omitted%3E%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&date=%3E%3D2020-07-01T20%3A25%3A00.000Z&date=%3C2020-07-08T20%3A25%3A00.000Z&_columns=date&_columns=product&_columns=version&_columns=build_id&_columns=platform&_columns=reason&_columns=address&_columns=install_time&_columns=startup_crash&_sort=-date&page=1#reports). All 7 crashes are H3 with different symbol.

I also take a look at [the release crashes]()
Around 
* fflush hangs, much more than beta
https://crash-stats.mozilla.org/report/index/eab6ec5b-76c9-487f-b3ba-43dfa0200708#allthreads
* deadlock ` nsNSSSocketInfo::CloseSocketAndDestroy()`, which disappears or is turned to other symbol  in beta
https://crash-stats.mozilla.org/report/index/a2ec85a3-383a-4925-993f-5f6910200708#allthreads
* PR_POLL
* other nss symboal
* random

To me, focusing on beta could be a good idea at this stage.

As for other crash signature, 
[@ shutdownhang | __psynch_cvwait | <name omitted> | mozilla::TaskController::GetRunnableForMTTask ](https://crash-stats.mozilla.org/search/?release_channel=nightly&signature=%3Dshutdownhang%20%7C%20__psynch_cvwait%20%7C%20%3Cname%20omitted%3E%20%7C%20mozilla%3A%3ATaskController%3A%3AGetRunnableForMTTask&product=Firefox&version=80.0a1&date=%3E%3D2020-07-01T00%3A00%3A00.000Z&date=%3C2020-07-08T20%3A00%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) and other mozilla::TaskController::GetRunnableForMTTask  are the mostly crashes in QuotaManager (some of them are even without socket thread). Only few of them are about H3 and nss, which are the known cases. 

[@ shutdownhang | mozilla::net::ShutdownEvent::PostAndWait ](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AShutdownEvent%3A%3APostAndWait&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T20%3A07%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) are about the `CacheFileIOManager::Shutdown`, which is a different issue.

[shutdownhang | nsThread::Shutdown | mozilla::net::nsSocketTransportService::ShutdownThread ](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20nsThread%3A%3AShutdown%20%7C%20mozilla%3A%3Anet%3A%3AnsSocketTransportService%3A%3AShutdownThread&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T20%3A08%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) is interesting. Half of them are known nss issues. Another half happens for deadlock in shutdown thread for ssl [here](https://hg.mozilla.org/releases/mozilla-beta/file/6e11fb81cbfb151d2c92ea050deca01d6c53babc/security/manager/ssl/SSLServerCertVerification.cpp#l187)
Here's some reports:
https://crash-stats.mozilla.org/report/index/a071e81d-0955-497f-bc3d-036210200708#allthreads
https://crash-stats.mozilla.org/report/index/011da31f-1aeb-46cd-a81f-eac870200708#allthreads
https://crash-stats.mozilla.org/report/index/3d063176-b728-437b-a4c9-c00410200708#allthreads



This is the analysis for [@shutdownhang | mozilla::net::nsHttpConnectionMgr::Shutdown](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T19%3A49%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) in beta.
* HTTP3 (23)
  * [neqo_glue::neqo_http3conn_fetch](https://searchfox.org/mozilla-central/rev/85ae3b911d5fcabd38ef315725df32e25edef83b/netwerk/socket/neqo_glue/src/lib.rs#267)
https://crash-stats.mozilla.org/report/index/232d2d2e-e059-416c-84fc-4896e0200708#allthreads
https://crash-stats.mozilla.org/report/index/27c83b2b-1977-45ca-8947-203520200708#allthreads
https://crash-stats.mozilla.org/report/index/ce130f9f-2137-4d7f-b791-7b51d0200708#allthreads
https://crash-stats.mozilla.org/report/index/4617e7fb-b701-40b0-871f-143f70200708#allthreads
https://crash-stats.mozilla.org/report/index/ee901bb2-abc4-489e-9f7d-79f3f0200708#allthreads
https://crash-stats.mozilla.org/report/index/76dc9ec3-abac-4490-8bea-5e55c0200708#allthreads
https://crash-stats.mozilla.org/report/index/e369ceab-448b-4d14-8aba-899980200708#allthreads
https://crash-stats.mozilla.org/report/index/cd15b360-f85c-44f4-a272-01a6d0200708#allthreads
https://crash-stats.mozilla.org/report/index/a63fdd66-6a6d-4f9b-a658-6745b0200708#allthreads
https://crash-stats.mozilla.org/report/index/69fdc1e0-912b-46ec-b278-7af360200708#allthreads
https://crash-stats.mozilla.org/report/index/273cc629-48db-4f7f-b817-303970200708#allthreads
https://crash-stats.mozilla.org/report/index/2be978fa-1e54-442d-ba98-4051f0200708#allthreads
https://crash-stats.mozilla.org/report/index/eee87582-2bdb-4398-bcce-043c80200708#allthreads
  * slow nsTString<char>::Find in mozilla::net::Http3Stream::FindRequestContentLength()
https://crash-stats.mozilla.org/report/index/e74302ff-a5bc-456b-9f62-7456b0200708#allthreads
https://crash-stats.mozilla.org/report/index/f4d7beae-1758-4f7b-8ddf-cff990200708#allthreads
https://crash-stats.mozilla.org/report/index/94ad5e0f-cdaa-4039-ae04-c680b0200708#allthreads
https://crash-stats.mozilla.org/report/index/1546f888-d3c2-48b5-b1c5-c08b30200708#allthreads
https://crash-stats.mozilla.org/report/index/5a584924-3e59-45f2-a637-0c6800200708#allthreads
https://crash-stats.mozilla.org/report/index/b7159d2d-1570-4ffc-87f5-2b2a60200708#allthreads
https://crash-stats.mozilla.org/report/index/05024233-a580-4315-af02-8580d0200708#allthreads
  * slow nsTString<char>::Find in mozilla::net::Http3Stream::GetHeadersString
https://crash-stats.mozilla.org/report/index/2595aabb-e2d5-44c0-9479-bce420200708#allthreads
https://crash-stats.mozilla.org/report/index/50b9aaf2-419d-4832-9dfd-368850200708#allthreads
https://crash-stats.mozilla.org/report/index/f447bc10-2cf9-4ad2-9ff9-9fe760200708#allthreads
* Deadlock with nss (17): Note to myself: search `RtlpWaitOnCriticalSection` for deadlock
https://crash-stats.mozilla.org/report/index/0c967088-a97e-4dde-8bbe-e23570200708#allthreads
https://crash-stats.mozilla.org/report/index/7bb239d5-c863-4ca8-9ad3-128ac0200708#allthreads
https://crash-stats.mozilla.org/report/index/053f0a6b-b7d1-4ce4-bbc6-beb4c0200708#allthreads
https://crash-stats.mozilla.org/report/index/763ae655-0a70-4422-97f7-0b86b0200708#allthreads
https://crash-stats.mozilla.org/report/index/749aea7f-cfdc-4b49-8373-ed8db0200708#allthreads
https://crash-stats.mozilla.org/report/index/6cb693ad-b88c-42e8-afef-5eceb0200708#allthreads
https://crash-stats.mozilla.org/report/index/915564b0-e7b7-4ea1-bc55-1d7a20200708#allthreads
https://crash-stats.mozilla.org/report/index/f2523d26-c4d4-4922-8231-5c7510200708#allthreads
https://crash-stats.mozilla.org/report/index/88299646-ecf5-47e3-adb5-39b6b0200708#allthreads
https://crash-stats.mozilla.org/report/index/b1286c47-7a56-4d38-ab7f-4c3530200708#allthreads
https://crash-stats.mozilla.org/report/index/ec485865-dedb-4d43-b906-ac6320200708#allthreads
https://crash-stats.mozilla.org/report/index/ba379840-e967-4e7c-bb37-962e90200708#allthreads
https://crash-stats.mozilla.org/report/index/a1bf9f5c-ebe3-41e7-809b-a38ff0200708#allthreads
https://crash-stats.mozilla.org/report/index/c6a3fff4-264e-4ffb-9b7a-2f55c0200708#allthreads
https://crash-stats.mozilla.org/report/index/15cc0996-9cdd-47f3-a8cf-5c8500200708#allthreads
https://crash-stats.mozilla.org/report/index/208140d4-60a6-403c-ba59-334a30200708#allthreads
https://crash-stats.mozilla.org/report/index/62db5f81-1e2a-4eb9-bc8a-2b0780200708#allthreads
* fflush hang in ssl 
https://crash-stats.mozilla.org/report/index/a524b967-5c38-46f9-885b-80b0b0200708#allthreads
* Good old poll
https://crash-stats.mozilla.org/report/index/dd4b29f7-99eb-4775-ad10-770fc0200708#allthreads
https://crash-stats.mozilla.org/report/index/d9b215a1-bdab-4ed4-87df-04ceb0200708#allthreads
https://crash-stats.mozilla.org/report/index/bbe33082-cc99-494c-b38c-930b40200708#allthreads
https://crash-stats.mozilla.org/report/index/9e64769b-e785-4681-a319-e13320200708#allthreads
https://crash-stats.mozilla.org/report/index/0c869f8c-f2e7-4754-8997-b6b9f0200708#allthreads
https://crash-stats.mozilla.org/report/index/9198e493-305a-4eeb-86a0-c35020200708#allthreads
* Random
  * Hang in PR_Write  https://crash-stats.mozilla.org/report/index/ea70ecc5-30e1-442b-8743-deea60200708#allthreads
  * doing it's shutdown job. not hanging: https://crash-stats.mozilla.org/report/index/c8f012d0-5121-488a-a6f9-7d5070200708#allthreads
  * je_realloc https://crash-stats.mozilla.org/report/index/7e0cf42f-852c-4150-a2e0-0ec2d0200708#allthreads
Hello Kim,
Thanks for weighing in and pointing out the issues in 79. It helps to identify some regression.

I take a look for the first 50 crashes at the stack of [@shutdownhang | mozilla::net::nsHttpConnectionMgr::Shutdown](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T19%3A49%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) in beta.  
I believe HTTP3 and nss are new crashes which is not covered in bug 1158189. 
This crashes could be eased to <20% once we have those fixed.
Another 10% of crashes are from haning in poll.
bug 1435962 comment 3 showes it could be a network driver bug.
We could address the last mile once later. However, we don't have much things to do with haning Poll.

I don't have strong feeling that it would be solved by not spinning main thread.
HTTP3 are mostly owing to slow string operation and nss lives in non-main thread.
If we don't spin the main thread loop, it still crashes or hangs elsewhere.
I'll ni? dragana, who chases this crashes for a long time, in the next comment for more input.
And file the responding bug to each components. 

I list the crashes reported which I triaged at the bottom of this comment.
And I take another look on [the crashes in nightly](https://crash-stats.mozilla.org/signature/?product=Firefox&version=80.0a1&signature=shutdownhang%20%7C%20__pthread_cond_wait%20%7C%20%3Cname%20omitted%3E%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&date=%3E%3D2020-07-01T20%3A25%3A00.000Z&date=%3C2020-07-08T20%3A25%3A00.000Z&_columns=date&_columns=product&_columns=version&_columns=build_id&_columns=platform&_columns=reason&_columns=address&_columns=install_time&_columns=startup_crash&_sort=-date&page=1#reports). All 7 crashes are H3 with different symbol.

I also take a look at [the release crashes](https://crash-stats.mozilla.org/signature/?product=Firefox&version=78.0.1&signature=shutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&date=%3E%3D2020-07-01T20%3A18%3A00.000Z&date=%3C2020-07-08T20%3A18%3A00.000Z&_columns=date&_columns=product&_columns=version&_columns=build_id&_columns=platform&_columns=reason&_columns=address&_columns=install_time&_columns=startup_crash&_sort=-date&page=1)
* fflush hangs, much more than beta
https://crash-stats.mozilla.org/report/index/eab6ec5b-76c9-487f-b3ba-43dfa0200708#allthreads
* deadlock ` nsNSSSocketInfo::CloseSocketAndDestroy()`, which disappears or is turned to other symbol  in beta
https://crash-stats.mozilla.org/report/index/a2ec85a3-383a-4925-993f-5f6910200708#allthreads
* PR_POLL
* other nss symboal
* random

To me, focusing on beta could be a good idea at this stage.

As for other crash signature, 
[@ shutdownhang | __psynch_cvwait | <name omitted> | mozilla::TaskController::GetRunnableForMTTask ](https://crash-stats.mozilla.org/search/?release_channel=nightly&signature=%3Dshutdownhang%20%7C%20__psynch_cvwait%20%7C%20%3Cname%20omitted%3E%20%7C%20mozilla%3A%3ATaskController%3A%3AGetRunnableForMTTask&product=Firefox&version=80.0a1&date=%3E%3D2020-07-01T00%3A00%3A00.000Z&date=%3C2020-07-08T20%3A00%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) and other mozilla::TaskController::GetRunnableForMTTask  are the mostly crashes in QuotaManager (some of them are even without socket thread). Only few of them are about H3 and nss, which are the known cases. 

[@ shutdownhang | mozilla::net::ShutdownEvent::PostAndWait ](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AShutdownEvent%3A%3APostAndWait&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T20%3A07%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) are about the `CacheFileIOManager::Shutdown`, which is a different issue.

[shutdownhang | nsThread::Shutdown | mozilla::net::nsSocketTransportService::ShutdownThread ](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20nsThread%3A%3AShutdown%20%7C%20mozilla%3A%3Anet%3A%3AnsSocketTransportService%3A%3AShutdownThread&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T20%3A08%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) is interesting. Half of them are known nss issues. Another half happens for deadlock in shutdown thread for ssl [here](https://hg.mozilla.org/releases/mozilla-beta/file/6e11fb81cbfb151d2c92ea050deca01d6c53babc/security/manager/ssl/SSLServerCertVerification.cpp#l187)
Here's some reports:
https://crash-stats.mozilla.org/report/index/a071e81d-0955-497f-bc3d-036210200708#allthreads
https://crash-stats.mozilla.org/report/index/011da31f-1aeb-46cd-a81f-eac870200708#allthreads
https://crash-stats.mozilla.org/report/index/3d063176-b728-437b-a4c9-c00410200708#allthreads



This is the analysis for [@shutdownhang | mozilla::net::nsHttpConnectionMgr::Shutdown](https://crash-stats.mozilla.org/search/?release_channel=beta&release_channel=aurora&signature=%3Dshutdownhang%20%7C%20mozilla%3A%3Anet%3A%3AnsHttpConnectionMgr%3A%3AShutdown&product=Firefox&version=78.0&version=78.0b7&version=78.0b8&version=78.0b9&version=79.0b1&version=79.0b2&version=79.0b3&version=79.0b4&version=79.0b5&date=%3E%3D2020-06-12T00%3A00%3A00.000Z&date=%3C2020-07-08T19%3A49%3A00.000Z&_facets=url&_facets=user_comments&_facets=install_time&_facets=version&_facets=address&_facets=moz_crash_reason&_facets=reason&_facets=build_id&_facets=platform_pretty_version&_facets=signature&_facets=useragent_locale&_sort=-date&_columns=date&_columns=signature&_columns=product&_columns=version&_columns=build_id&_columns=platform#crash-reports) in beta.
* HTTP3 (23)
  * [neqo_glue::neqo_http3conn_fetch](https://searchfox.org/mozilla-central/rev/85ae3b911d5fcabd38ef315725df32e25edef83b/netwerk/socket/neqo_glue/src/lib.rs#267)
https://crash-stats.mozilla.org/report/index/232d2d2e-e059-416c-84fc-4896e0200708#allthreads
https://crash-stats.mozilla.org/report/index/27c83b2b-1977-45ca-8947-203520200708#allthreads
https://crash-stats.mozilla.org/report/index/ce130f9f-2137-4d7f-b791-7b51d0200708#allthreads
https://crash-stats.mozilla.org/report/index/4617e7fb-b701-40b0-871f-143f70200708#allthreads
https://crash-stats.mozilla.org/report/index/ee901bb2-abc4-489e-9f7d-79f3f0200708#allthreads
https://crash-stats.mozilla.org/report/index/76dc9ec3-abac-4490-8bea-5e55c0200708#allthreads
https://crash-stats.mozilla.org/report/index/e369ceab-448b-4d14-8aba-899980200708#allthreads
https://crash-stats.mozilla.org/report/index/cd15b360-f85c-44f4-a272-01a6d0200708#allthreads
https://crash-stats.mozilla.org/report/index/a63fdd66-6a6d-4f9b-a658-6745b0200708#allthreads
https://crash-stats.mozilla.org/report/index/69fdc1e0-912b-46ec-b278-7af360200708#allthreads
https://crash-stats.mozilla.org/report/index/273cc629-48db-4f7f-b817-303970200708#allthreads
https://crash-stats.mozilla.org/report/index/2be978fa-1e54-442d-ba98-4051f0200708#allthreads
https://crash-stats.mozilla.org/report/index/eee87582-2bdb-4398-bcce-043c80200708#allthreads
  * slow nsTString<char>::Find in mozilla::net::Http3Stream::FindRequestContentLength()
https://crash-stats.mozilla.org/report/index/e74302ff-a5bc-456b-9f62-7456b0200708#allthreads
https://crash-stats.mozilla.org/report/index/f4d7beae-1758-4f7b-8ddf-cff990200708#allthreads
https://crash-stats.mozilla.org/report/index/94ad5e0f-cdaa-4039-ae04-c680b0200708#allthreads
https://crash-stats.mozilla.org/report/index/1546f888-d3c2-48b5-b1c5-c08b30200708#allthreads
https://crash-stats.mozilla.org/report/index/5a584924-3e59-45f2-a637-0c6800200708#allthreads
https://crash-stats.mozilla.org/report/index/b7159d2d-1570-4ffc-87f5-2b2a60200708#allthreads
https://crash-stats.mozilla.org/report/index/05024233-a580-4315-af02-8580d0200708#allthreads
  * slow nsTString<char>::Find in mozilla::net::Http3Stream::GetHeadersString
https://crash-stats.mozilla.org/report/index/2595aabb-e2d5-44c0-9479-bce420200708#allthreads
https://crash-stats.mozilla.org/report/index/50b9aaf2-419d-4832-9dfd-368850200708#allthreads
https://crash-stats.mozilla.org/report/index/f447bc10-2cf9-4ad2-9ff9-9fe760200708#allthreads
* Deadlock with nss (17): Note to myself: search `RtlpWaitOnCriticalSection` for deadlock
https://crash-stats.mozilla.org/report/index/0c967088-a97e-4dde-8bbe-e23570200708#allthreads
https://crash-stats.mozilla.org/report/index/7bb239d5-c863-4ca8-9ad3-128ac0200708#allthreads
https://crash-stats.mozilla.org/report/index/053f0a6b-b7d1-4ce4-bbc6-beb4c0200708#allthreads
https://crash-stats.mozilla.org/report/index/763ae655-0a70-4422-97f7-0b86b0200708#allthreads
https://crash-stats.mozilla.org/report/index/749aea7f-cfdc-4b49-8373-ed8db0200708#allthreads
https://crash-stats.mozilla.org/report/index/6cb693ad-b88c-42e8-afef-5eceb0200708#allthreads
https://crash-stats.mozilla.org/report/index/915564b0-e7b7-4ea1-bc55-1d7a20200708#allthreads
https://crash-stats.mozilla.org/report/index/f2523d26-c4d4-4922-8231-5c7510200708#allthreads
https://crash-stats.mozilla.org/report/index/88299646-ecf5-47e3-adb5-39b6b0200708#allthreads
https://crash-stats.mozilla.org/report/index/b1286c47-7a56-4d38-ab7f-4c3530200708#allthreads
https://crash-stats.mozilla.org/report/index/ec485865-dedb-4d43-b906-ac6320200708#allthreads
https://crash-stats.mozilla.org/report/index/ba379840-e967-4e7c-bb37-962e90200708#allthreads
https://crash-stats.mozilla.org/report/index/a1bf9f5c-ebe3-41e7-809b-a38ff0200708#allthreads
https://crash-stats.mozilla.org/report/index/c6a3fff4-264e-4ffb-9b7a-2f55c0200708#allthreads
https://crash-stats.mozilla.org/report/index/15cc0996-9cdd-47f3-a8cf-5c8500200708#allthreads
https://crash-stats.mozilla.org/report/index/208140d4-60a6-403c-ba59-334a30200708#allthreads
https://crash-stats.mozilla.org/report/index/62db5f81-1e2a-4eb9-bc8a-2b0780200708#allthreads
* fflush hang in ssl 
https://crash-stats.mozilla.org/report/index/a524b967-5c38-46f9-885b-80b0b0200708#allthreads
* Good old poll
https://crash-stats.mozilla.org/report/index/dd4b29f7-99eb-4775-ad10-770fc0200708#allthreads
https://crash-stats.mozilla.org/report/index/d9b215a1-bdab-4ed4-87df-04ceb0200708#allthreads
https://crash-stats.mozilla.org/report/index/bbe33082-cc99-494c-b38c-930b40200708#allthreads
https://crash-stats.mozilla.org/report/index/9e64769b-e785-4681-a319-e13320200708#allthreads
https://crash-stats.mozilla.org/report/index/0c869f8c-f2e7-4754-8997-b6b9f0200708#allthreads
https://crash-stats.mozilla.org/report/index/9198e493-305a-4eeb-86a0-c35020200708#allthreads
* Random
  * Hang in PR_Write  https://crash-stats.mozilla.org/report/index/ea70ecc5-30e1-442b-8743-deea60200708#allthreads
  * doing it's shutdown job. not hanging: https://crash-stats.mozilla.org/report/index/c8f012d0-5121-488a-a6f9-7d5070200708#allthreads
  * je_realloc https://crash-stats.mozilla.org/report/index/7e0cf42f-852c-4150-a2e0-0ec2d0200708#allthreads

Back to Bug 1633342 Comment 16