From e6316749d603fe9c4c91f6ec3694e06e4de632a3 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 8 Feb 2024 07:30:10 -0800 Subject: [PATCH] lib/Kconfig.debug: TEST_IOV_ITER depends on MMU commit 1eb1e984379e2da04361763f66eec90dd75cf63e upstream. 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 Cc: David Howells Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- lib/Kconfig.debug | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1331f3186f2a..d2f73bb4121b 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2225,6 +2225,7 @@ 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