tor/changes/bug32673

  o Minor bugfixes (TLS bug handling):
    - When encountering a bug in buf_read_freom_tls(), return a
      "MISC" error code rather than "WANTWRITE".  This change might
      help avoid some CPU-wasting loops if the bug is ever triggered.
      Bug reported by opara.    Fixes bug 32673; bugfix on 0.3.0.4-alpha.
buf_read_from_tls: Return ERROR_MISC, not WANTWRITE, on BUG(). Fixes bug 32673; bugfix on 0.3.0.4-alpha. We introduced these checks in ee5471f9aab5526 to help diagnose 21369, but we used "-1" when "TOR_TLS_ERROR_MISC" would have been correct. Found by opara. I don't think that this is actually getting triggered in the wild, but if it were, it could cause nasty behavior: spurious WANTREAD/WANTWRITE returns have a way of turning into CPU-eating busy-loops. 2020-01-29 14:49:01 +01:00			`o Minor bugfixes (TLS bug handling):`
			`- When encountering a bug in buf_read_freom_tls(), return a`
			`"MISC" error code rather than "WANTWRITE". This change might`
			`help avoid some CPU-wasting loops if the bug is ever triggered.`
			`Bug reported by opara. Fixes bug 32673; bugfix on 0.3.0.4-alpha.`