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In do_sem2_wait(), balance umtx_key_get() with umtx_key_release() on retry.

Description

In do_sem2_wait(), balance umtx_key_get() with umtx_key_release() on retry.

Reported by: ler
Bisected and reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 12 days

Details

Provenance
kibAuthored on
Parents
rS350004: Implement software access and dirty bit management for arm64.
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