git: 6071292d39ab - main - libthr: Return EDEADLK if it is held by ourself

The branch main has been updated by aokblast:

URL: https://cgit.FreeBSD.org/src/commit/?id=6071292d39ab1b571b7e6b6858c4b59b652784d7

commit 6071292d39ab1b571b7e6b6858c4b59b652784d7
Author:     ShengYi Hung <aokblast@FreeBSD.org>
AuthorDate: 2026-10-21 06:09:00 +0000
Commit:     ShengYi Hung <aokblast@FreeBSD.org>
CommitDate: 2026-11-03 06:51:49 +0000

    libthr: Return EDEADLK if it is held by ourself
    
    Reviewed by:    kib, markj
    MFC after:      2 weeks
    Differential Revision: https://reviews.freebsd.org/D60959
---
 lib/libthr/thread/thr_rwlock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/libthr/thread/thr_rwlock.c b/lib/libthr/thread/thr_rwlock.c
index 5fd1e1dcb14a..8bc22814f45b 100644
--- a/lib/libthr/thread/thr_rwlock.c
+++ b/lib/libthr/thread/thr_rwlock.c
@@ -217,6 +217,9 @@ rwlock_rdlock_common(pthread_rwlock_t *rwlock, const struct timespec *abstime)
 		return (ret);
 	}
 
+	if (__predict_false(prwlock->owner == TID(curthread)))
+		return (EDEADLK);
+
 	if (__predict_false(abstime_invalid(abstime)))
 		return (EINVAL);
 
@@ -311,6 +314,9 @@ rwlock_wrlock_common(pthread_rwlock_t *rwlock, const struct timespec *abstime)
 		return (ret);
 	}
 
+	if (__predict_false(prwlock->owner == TID(curthread)))
+		return (EDEADLK);
+
 	if (__predict_false(abstime_invalid(abstime)))
 		return (EINVAL);