Date: Sat, 22 Feb 2020 11:08:01 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r358245 - stable/11/sys/kern Message-ID: <202002221108.01MB81cs077981@repo.freebsd.org>
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Author: kib Date: Sat Feb 22 11:08:01 2020 New Revision: 358245 URL: https://svnweb.freebsd.org/changeset/base/358245 Log: MFC r357984: sem_remove(): fix the loop that compacts sem array on semaphores removal. Modified: stable/11/sys/kern/sysv_sem.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/kern/sysv_sem.c ============================================================================== --- stable/11/sys/kern/sysv_sem.c Sat Feb 22 11:05:27 2020 (r358244) +++ stable/11/sys/kern/sysv_sem.c Sat Feb 22 11:08:01 2020 (r358245) @@ -576,8 +576,9 @@ 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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