Differential D21952

Remove adapters from t4_list earlier during detach.
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Authored by jhb on Oct 9 2019, 12:24 AM.

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rS353369: Remove adapters from t4_list earlier during detach.

Summary

This ensures the clip task won't race with t4_destroy_clip_table.

While here, make some mutex destroys unconditional since attach
always initializes them.

Test Plan

kldunload of if_cxgbe panicked due to the clip task racing with the clip table being destroyed
with this change and the fix for vmem_destroy, kldunload of if_cxgbe no longer panics

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Build Status

Buildable 26944
Build 25247: arc lint + arc unit

Event Timeline

jhb created this revision.Oct 9 2019, 12:24 AM

Herald added a subscriber: ae. · View Herald TranscriptOct 9 2019, 12:24 AM

Harbormaster completed remote builds in B26944: Diff 63068.Oct 9 2019, 12:24 AM

np accepted this revision.Oct 9 2019, 7:18 PM

This revision is now accepted and ready to land.Oct 9 2019, 7:18 PM

Closed by commit rS353369: Remove adapters from t4_list earlier during detach. (authored by jhb). · Explain WhyOct 9 2019, 9:09 PM

This revision was automatically updated to reflect the committed changes.

jhb added a commit: rS353369: Remove adapters from t4_list earlier during detach..

Herald added a subscriber: imp. · View Herald TranscriptOct 9 2019, 9:09 PM

Revision Contents
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sys/

dev/

cxgbe/

t4_main.c

18 lines

Diff 63068

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Remove adapters from t4_list earlier during detach.ClosedPublicActions