[Bug 262633] Missing mtx protecting variable prison->pr_prison_racct

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 18 Mar 2022 18:45:49 UTC

firk@cantconnect.ru changed:

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--- Comment #3 from firk@cantconnect.ru ---
Created attachment 232558
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=232558&action=edit
test program

Added a test program.

How to use:

./bug-262633-test 100000 3

Second value:
  0 = fake run;
  1 = only spam racct increment/decrement;
  2 = only spam jail renaming (may be used to verify time consumed in
  3 = do both - will lead to panic

First value:
  number of prison_racct structs to populate (note that they don't get
depopulated until system reboot)
  I made a panic with this value = 10000 once;  value = 30000 leads to a panic
very fast (but need to wait initializing of rctls).

Panic reasons vary, but I think the source of all them is this bug.

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