Merge branch 'task-local-data-bug-fixes-and-improvement'

Amery Hung says:

====================
Task local data bug fixes and improvement

This patchset fixed three task local data bugs, improved the
memory allocation code, and dropped unnecessary TLD_READ_ONCE. Please
find the detail in each patch's commit msg.

One thing worth mentioning is that Patch 3 allows us to renable task
local data selftests as the library now always calls aligned_alloc()
with size matching alignment under default configuration.

v1 -> v2
 - Fix potential memory leak
 - Drop TLD_READ_ONCE()
Link: https://lore.kernel.org/bpf/20260326052437.590158-1-ameryhung@gmail.com/
====================

Link: https://patch.msgid.link/20260331213555.1993883-1-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>