Hi, This is regarding the subj patch: https://bugzilla.kernel.org/show_bug.cgi?id=203573 https://www.spinics.net/lists/linux-bcache/msg07474.html (don't see a way to reply to the patch)
This looks like a serious bug that would have been caught by use-after-scope mode in KASAN given any coverage of the involved code (i.e. any tests that executes the function once) if I am reading this correctly. But use-after-scope detection was removed in: 7771bdbbfd3d kasan: remove use after scope bugs detection. because it does not catch enough bugs. Hard to say if this bug is enough rationale to bring use-after-scope back, but it is a data point. FWIW this bug would have been detected during patch testing with no debugging required.
