svn commit: r357915 - stable/11/sys/compat/linux

[Konstantin Belousov]

Author: kib
Date: Fri Feb 14 13:22:38 2020
New Revision: 357915
URL: https://svnweb.freebsd.org/changeset/base/357915

Log:
  MFC r357668:
  linux futex_put(): do not touch futex after dropping our reference.

Modified:
  stable/11/sys/compat/linux/linux_futex.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/compat/linux/linux_futex.c
==============================================================================
--- stable/11/sys/compat/linux/linux_futex.c	Fri Feb 14 13:14:19 2020	(r357914)
+++ stable/11/sys/compat/linux/linux_futex.c	Fri Feb 14 13:22:38 2020	(r357915)
@@ -338,9 +338,9 @@ futex_put(struct futex *f, struct waiting_proc *wp)
 	    f->f_key.shared);
 	LINUX_CTR3(sys_futex, "futex_put uaddr %p ref %d shared %d",
 	    f->f_uaddr, f->f_refcount, f->f_key.shared);
-	FUTEXES_UNLOCK;
 	if (FUTEX_LOCKED(f))
 		futex_unlock(f);
+	FUTEXES_UNLOCK;
 
 	LIN_SDT_PROBE0(futex, futex_put, return);
 }