Botond Dénes 62f399d8db db/row_cache: make_nonpopulating_reader(): pass cache tracker to snapshot ...

The API contract in partition_version.hh states that when dealing with
evictable entries, a real cache tracker pointer has to be passed to all
methods that ask for it. The nonpopulating reader violates this, passing
a nullptr to the snapshot. This was observed to cause a crash when a
concurrent cache read accessed the snapshot with the null tracker.

A reproducer is included which fails before and passes after the fix.

Fixes: #26847

Closes scylladb/scylladb#28163

(cherry picked from commit a53f989d2f)

Closes scylladb/scylladb#28279

2026-01-22 12:38:00 +02:00

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