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* [REGRESSION] 6.6.129 tools/perf cannot build due to eddddf4ed7f6
@ 2026-03-06 18:10 Kenta Akagi
  0 siblings, 0 replies; only message in thread
From: Kenta Akagi @ 2026-03-06 18:10 UTC (permalink / raw)
  To: regressions; +Cc: stable, sashal

Hi,

It seems that build of tools/perf fails due to commit 
eddddf4ed7f6 ("perf unwind-libdw: Fix invalid reference counts") backported in v6.6.128.

util/unwind-libdw.c: In function ‘unwind__get_entries’:
util/unwind-libdw.c:323:17: error: implicit declaration of function ‘map_symbol__exit’; did you mean ‘symbol__exit’? [-Wimplicit-function-declaration]
  323 |                 map_symbol__exit(&ui->entries[i].ms);
      |                 ^~~~~~~~~~~~~~~~
      |                 symbol__exit

This backport adds a call to map_symbol__exit, but upstream 
commit 56e144fe9826 ("perf mem_info: Add and use map_symbol__exit and addr_map_symbol__exit"), 
which added this function, has not been backported to v6.6.

I was able to build it by simply reverting eddddf4ed7f6, but I haven't tested perf though...

Thanks,
Akagi

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