From 071369803e47def31a870d70536c0706db88ce6e Mon Sep 17 00:00:00 2001
From: Alexander Motin <alexander.motin@TrueNAS.com>
Date: Tue, 25 Nov 2025 05:07:00 -0500
Subject: [PATCH] raidz_test: Restore rand_data protection

It feels dirty to modify protection of a memory allocated via libc,
but at least we should try to restore it before freeing.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #17977
---
 cmd/raidz_test/raidz_test.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cmd/raidz_test/raidz_test.c b/cmd/raidz_test/raidz_test.c
index 84a28708f..f8bcba5cb 100644
--- a/cmd/raidz_test/raidz_test.c
+++ b/cmd/raidz_test/raidz_test.c
@@ -847,6 +847,8 @@ main(int argc, char **argv)
 		err = run_test(NULL);
 	}
 
+	mprotect(rand_data, SPA_MAXBLOCKSIZE, PROT_READ | PROT_WRITE);
+
 	umem_free(rand_data, SPA_MAXBLOCKSIZE);
 	kernel_fini();