The patch titled
Subject: lib/Kconfig.debug: TEST_IOV_ITER depends on MMU
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
lib-kconfigdebug-test_iov_iter-depends-on-mmu.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-kconfigdebug-test_iov_iter-depends-on-mmu.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Guenter Roeck <linux@xxxxxxxxxxxx>
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@xxxxxxxxxxxx
Fixes: 2d71340ff1d4 ("iov_iter: Kunit tests for copying to/from an iterator")
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxx are
lib-kconfigdebug-test_iov_iter-depends-on-mmu.patch
