OS-6308 fix for OS-6275 blows assert on debug kernel

Reviewed by: Patrick Mooney <patrick.mooney@joyent.com> Approved by: Patrick Mooney <patrick.mooney@joyent.com>
TritonDataCenter · Aug 24, 2017 · 959bbe4 · 959bbe4
1 parent 980510c
commit 959bbe4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/usr/src/uts/common/brand/lx/syscall/lx_pipe.c b/usr/src/uts/common/brand/lx/syscall/lx_pipe.c
@@ -186,7 +186,9 @@ lx_hd_pipe(intptr_t arg, int flags)
 	 * the pipe capacity is limited to "Fifohiwat" which is a compile-time
 	 * limit set to FIFOHIWAT.
 	 */
+	mutex_enter(&VTOF(vp1)->fn_lock->flk_lock);
 	fifo_fastoff(VTOF(vp1));
+	mutex_exit(&VTOF(vp1)->fn_lock->flk_lock);
 
 	/*
 	 * Set the O_NONBLOCK flag if requested.