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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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Repository
rS FreeBSD src repository - subversion
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head/
sys/
dev/
cxgbe/
18 lines

Diff 63099

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head/sys/dev/cxgbe/t4_main.c

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