svn commit: r358242 - stable/12/sys/kern
Konstantin Belousov
kib at FreeBSD.org
Sat Feb 22 10:55:50 UTC 2020
Author: kib
Date: Sat Feb 22 10:55:49 2020
New Revision: 358242
URL: https://svnweb.freebsd.org/changeset/base/358242
Log:
MFC r357984:
sem_remove(): fix the loop that compacts sem array on semaphores removal.
Modified:
stable/12/sys/kern/sysv_sem.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/kern/sysv_sem.c
==============================================================================
--- stable/12/sys/kern/sysv_sem.c Sat Feb 22 10:54:11 2020 (r358241)
+++ stable/12/sys/kern/sysv_sem.c Sat Feb 22 10:55:49 2020 (r358242)
@@ -584,8 +584,9 @@ sem_remove(int semidx, struct ucred *cred)
sema[i].u.__sem_base > semakptr->u.__sem_base)
mtx_lock_flags(&sema_mtx[i], LOP_DUPOK);
}
- for (i = semakptr->u.__sem_base - sem; i < semtot; i++)
- sem[i] = sem[i + semakptr->u.sem_nsems];
+ for (i = semakptr->u.__sem_base - sem + semakptr->u.sem_nsems;
+ i < semtot; i++)
+ sem[i - semakptr->u.sem_nsems] = sem[i];
for (i = 0; i < seminfo.semmni; i++) {
if ((sema[i].u.sem_perm.mode & SEM_ALLOC) &&
sema[i].u.__sem_base > semakptr->u.__sem_base) {
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