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Sat, 9 Sep 2023 08:27:59 GMT (envelope-from git) Date: Sat, 9 Sep 2023 08:27:59 GMT Message-Id: <202309090827.3898Rx6k054117@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: 52ea025eba6c - stable/13 - kthread_add(): do not allow to attach the thread to a dead or dying process List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 52ea025eba6c4b9cf560f0dc90ed6c49846637ef Auto-Submitted: auto-generated The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=52ea025eba6c4b9cf560f0dc90ed6c49846637ef commit 52ea025eba6c4b9cf560f0dc90ed6c49846637ef Author: Konstantin Belousov AuthorDate: 2023-09-05 10:54:36 +0000 Commit: Konstantin Belousov CommitDate: 2023-09-09 08:27:32 +0000 kthread_add(): do not allow to attach the thread to a dead or dying process (cherry picked from commit 96362992330894787a4485f0adc5e867879c5893) --- sys/kern/kern_kthread.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/kern/kern_kthread.c b/sys/kern/kern_kthread.c index 5e32aea1f56d..6f7fd8b3d555 100644 --- a/sys/kern/kern_kthread.c +++ b/sys/kern/kern_kthread.c @@ -281,6 +281,10 @@ kthread_add1(void (*func)(void *), void *arg, struct proc *p, return (ENOMEM); PROC_LOCK(p); + if (p->p_state == PRS_ZOMBIE || (p->p_flag2 & P2_WEXIT) != 0) { + PROC_UNLOCK(p); + return (ESRCH); + } oldtd = FIRST_THREAD_IN_PROC(p); bzero(&newtd->td_startzero,