The patch titled
Subject: userfaultfd: selftest: return an error if BOUNCE_VERIFY fails
has been added to the -mm tree. Its filename is
userfaultfd-selftest-return-an-error-if-bounce_verify-fails.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/userfaultfd-selftest-return-an-error-if-bounce_verify-fails.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/userfaultfd-selftest-return-an-error-if-bounce_verify-fails.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: userfaultfd: selftest: return an error if BOUNCE_VERIFY fails
This will report the error in the exit code, in addition of the
fprintf.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Dr. David Alan Gilbert <dgilbert@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
Cc: Thierry Reding <treding@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/userfaultfd.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff -puN tools/testing/selftests/vm/userfaultfd.c~userfaultfd-selftest-return-an-error-if-bounce_verify-fails tools/testing/selftests/vm/userfaultfd.c
--- a/tools/testing/selftests/vm/userfaultfd.c~userfaultfd-selftest-return-an-error-if-bounce_verify-fails
+++ a/tools/testing/selftests/vm/userfaultfd.c
@@ -422,7 +422,7 @@ static int userfaultfd_stress(void)
struct uffdio_register uffdio_register;
struct uffdio_api uffdio_api;
unsigned long cpu;
- int uffd_flags;
+ int uffd_flags, err;
unsigned long userfaults[nr_cpus];
if (posix_memalign(&area, page_size, nr_pages * page_size)) {
@@ -499,6 +499,7 @@ static int userfaultfd_stress(void)
pthread_attr_init(&attr);
pthread_attr_setstacksize(&attr, 16*1024*1024);
+ err = 0;
while (bounces--) {
unsigned long expected_ioctls;
@@ -583,8 +584,9 @@ static int userfaultfd_stress(void)
area_dst + nr * page_size,
sizeof(pthread_mutex_t))) {
fprintf(stderr,
- "error mutex 2 %lu\n",
+ "error mutex %lu\n",
nr);
+ err = 1;
bounces = 0;
}
if (*area_count(area_dst, nr) != count_verify[nr]) {
@@ -593,6 +595,7 @@ static int userfaultfd_stress(void)
*area_count(area_src, nr),
count_verify[nr],
nr);
+ err = 1;
bounces = 0;
}
}
@@ -609,7 +612,7 @@ static int userfaultfd_stress(void)
printf("\n");
}
- return 0;
+ return err;
}
int main(int argc, char **argv)
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
userfaultfd-revert-userfaultfd-waitqueue-add-nr-wake-parameter-to-__wake_up_locked_key.patch
userfaultfd-selftest-headers-fixup.patch
userfaultfd-selftest-avoid-my_bcmp-false-positives-with-powerpc.patch
userfaultfd-selftest-return-an-error-if-bounce_verify-fails.patch
userfaultfd-selftest-dont-error-out-if-pthread_mutex_t-isnt-identical.patch
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