From 255112b27b106f70d9c9ef38cd8dff62777ba657 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 1 Jan 2023 11:38:03 +0100
Subject: boot: Fix memory leak on S_io_read error

---
 boot/boot.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'boot/boot.c')

diff --git a/boot/boot.c b/boot/boot.c
index 1f02947f..0a7091e3 100644
--- a/boot/boot.c
+++ b/boot/boot.c
@@ -1460,6 +1460,8 @@ S_io_read (mach_port_t object,
       if (amount > *datalen)
 	*data = mmap (0, amount, PROT_READ|PROT_WRITE, MAP_ANON, 0, 0);
       *datalen = read (0, *data, amount);
+      if (*datalen == -1)
+	munmap (*data, amount);
       unlock_readlock ();
       return *datalen == -1 ? errno : 0;
     }
-- 
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