[merged mm-hotfixes-stable] lib-kconfigdebug-test_iov_iter-depends-on-mmu.patch removed from -mm tree

[merged mm-hotfixes-stable] lib-kconfigdebug-test_iov_iter-depends-on-mmu.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: lib/Kconfig.debug: TEST_IOV_ITER depends on MMU
has been removed from the -mm tree.  Its filename was
     lib-kconfigdebug-test_iov_iter-depends-on-mmu.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Guenter Roeck <linux@roeck-us.net>
Subject: lib/Kconfig.debug: TEST_IOV_ITER depends on MMU
Date: Thu, 8 Feb 2024 07:30:10 -0800

Trying to run the iov_iter unit test on a nommu system such as the qemu
kc705-nommu emulation results in a crash.

    KTAP version 1
    # Subtest: iov_iter
    # module: kunit_iov_iter
    1..9
BUG: failure at mm/nommu.c:318/vmap()!
Kernel panic - not syncing: BUG!

The test calls vmap() directly, but vmap() is not supported on nommu
systems, causing the crash.  TEST_IOV_ITER therefore needs to depend on
MMU.

Link: https://lkml.kernel.org/r/20240208153010.1439753-1-linux@roeck-us.net
Fixes: 2d71340ff1d4 ("iov_iter: Kunit tests for copying to/from an iterator")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: David Howells <dhowells@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/Kconfig.debug |    1 +
 1 file changed, 1 insertion(+)

--- a/lib/Kconfig.debug~lib-kconfigdebug-test_iov_iter-depends-on-mmu
+++ a/lib/Kconfig.debug
@@ -2235,6 +2235,7 @@ config TEST_DIV64
 config TEST_IOV_ITER
 	tristate "Test iov_iter operation" if !KUNIT_ALL_TESTS
 	depends on KUNIT
+	depends on MMU
 	default KUNIT_ALL_TESTS
 	help
 	  Enable this to turn on testing of the operation of the I/O iterator
_

Patches currently in -mm which might be from linux@roeck-us.net are