git: b03535a3b559 - stable/13 - hwpmc: on process exit, ensure that the owned log is closed

The branch stable/13 has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=b03535a3b5591f460fe49256aa28313c9e17b37b

commit b03535a3b5591f460fe49256aa28313c9e17b37b
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2023-08-13 13:42:49 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2023-08-28 00:27:48 +0000

    hwpmc: on process exit, ensure that the owned log is closed
    
    (cherry picked from commit 3c872a70b883e4e2b38135bd6bd114ac9d2ea579)
---
 sys/dev/hwpmc/hwpmc_mod.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sys/dev/hwpmc/hwpmc_mod.c b/sys/dev/hwpmc/hwpmc_mod.c
index 714e1f550144..c402c764d0a9 100644
--- a/sys/dev/hwpmc/hwpmc_mod.c
+++ b/sys/dev/hwpmc/hwpmc_mod.c
@@ -5078,13 +5078,13 @@ pmc_process_exit(void *arg __unused, struct proc *p)
 		    pmclog_process_sysexit(po, p->p_pid);
 	PMC_EPOCH_EXIT();
 
-	if (!is_using_hwpmcs)
-		return;
-
 	PMC_GET_SX_XLOCK();
 	PMCDBG3(PRC,EXT,1,"process-exit proc=%p (%d, %s)", p, p->p_pid,
 	    p->p_comm);
 
+	if (!is_using_hwpmcs)
+		goto out;
+
 	/*
 	 * Since this code is invoked by the last thread in an exiting
 	 * process, we would have context switched IN at some prior
@@ -5222,6 +5222,8 @@ pmc_process_exit(void *arg __unused, struct proc *p)
 	 * memory.
 	 */
 	if ((po = pmc_find_owner_descriptor(p)) != NULL) {
+		if ((po->po_flags & PMC_PO_OWNS_LOGFILE) != 0)
+			pmclog_close(po);
 		pmc_remove_owner(po);
 		pmc_destroy_owner_descriptor(po);
 	}