Merge/sound upstream 20260105 #8103

Job	Run time
GCC build X86_64	19m 56s
GCC build X86_64 with W=1	3m 4s
GCC build i386	17m 13s
GCC static -fanalyzer	4m 24s
GCC build X86_64 with W=1 allmodconfig	1m 53s
Sparse check	3m 12s
Clang build x86_64	5m 57s
GCC build arm64 allmodconfig	2m 1s
GCC build arm64	23m 1s
	1h 20m 41s

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