GWP-ASan: Replace DCHECK for reachable conditiion

Currently, GetErrorType() sanity checks that a crash never happens when
accessing an allocated page; however, while testing locally I was able
to trigger this DCHECK very infrequently. Replace it with a LOG and
return kUnknown instead to be safe.

Change-Id: I2a970ac4ff22b88155598988a4ce23aada542b36
Reviewed-on: https://chromium-review.googlesource.com/c/1354652
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612467}
1 file changed