Description: tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop.
References:
Notes:
 carnil> Commit fixes bf41a158cacba ("ring-buffer: make reentrant").
Bugs:
upstream: released (5.14-rc3) [67f0d6d9883c13174669f88adac4f0ee656cc16a]
5.10-upstream-stable: released (5.10.54) [757bdba8026be19b4f447487695cd0349a648d9e]
4.19-upstream-stable: released (4.19.199) [6a99bfee7f5625d2577a5c3b09a2bd2a845feb8a]
4.9-upstream-stable: released (4.9.277) [7db12bae1a239d872d17e128fd5271da789bf99c]
sid: released (5.14.6-1)
5.10-bullseye-security: released (5.10.46-5) [bugfix/all/tracing-Fix-bug-in-rb_per_cpu_empty-that-might-cause.patch]
4.19-buster-security: released (4.19.208-1)
4.9-stretch-security: released (4.9.290-1)