https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282713
--- Comment #16 from commit-h...@freebsd.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=df436036e82b895a6233d803bc8bf14d2cfe90d7 commit df436036e82b895a6233d803bc8bf14d2cfe90d7 Author: Bojan Novković <bnov...@freebsd.org> AuthorDate: 2025-01-30 15:10:04 +0000 Commit: Bojan Novković <bnov...@freebsd.org> CommitDate: 2025-02-17 16:40:34 +0000 umtx: Don't sleep after casueword32 failure in do_sem2_wake When a casueword32 operation fails, 'do_sem2_wake' will call 'thread_check_susp' to avoid a potential livelock. However, it instructs 'thread_check_susp' to sleep while holding a previously busied umtxq key. This is explicitly discouraged by the comments in 'thread_check_susp' which state that a thread shouldn't sleep if it owns a kernel resource. Fix this by passing 'false' to 'thread_check_susp'. Reviewed by: kib PR: 282713 Differential Revision: https://reviews.freebsd.org/D48728 Sponsored by: Klara Inc. sys/kern/kern_umtx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- You are receiving this mail because: You are on the CC list for the bug.
