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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-12 10:39:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-12 10:39:53 -0700
commita667cb7a94d48a483fb5d6006fe04a440f1a42ce (patch)
treeccb9e596db96d53fcc4ba13a3370ec84912d0f22 /tools/testing/selftests
parentcb1d150d809e2409725ba275c5101c4fc4465b8e (diff)
parent586187d7de71b4da7956ba588ae42253b9ff6482 (diff)
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: - a few misc things - the rest of MM - remove flex_arrays, replace with new simple radix-tree implementation * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (38 commits) Drop flex_arrays sctp: convert to genradix proc: commit to genradix generic radix trees selinux: convert to kvmalloc md: convert to kvmalloc openvswitch: convert to kvmalloc of: fix kmemleak crash caused by imbalance in early memory reservation mm: memblock: update comments and kernel-doc memblock: split checks whether a region should be skipped to a helper function memblock: remove memblock_{set,clear}_region_flags memblock: drop memblock_alloc_*_nopanic() variants memblock: memblock_alloc_try_nid: don't panic treewide: add checks for the return value of memblock_alloc*() swiotlb: add checks for the return value of memblock_alloc*() init/main: add checks for the return value of memblock_alloc*() mm/percpu: add checks for the return value of memblock_alloc*() sparc: add checks for the return value of memblock_alloc*() ia64: add checks for the return value of memblock_alloc*() arch: don't memset(0) memory returned by memblock_alloc() ...
Diffstat (limited to 'tools/testing/selftests')
-rwxr-xr-xtools/testing/selftests/sysctl/sysctl.sh55
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/testing/selftests/sysctl/sysctl.sh b/tools/testing/selftests/sysctl/sysctl.sh
index 584eb8ea780a..780ce7123374 100755
--- a/tools/testing/selftests/sysctl/sysctl.sh
+++ b/tools/testing/selftests/sysctl/sysctl.sh
@@ -290,6 +290,58 @@ run_numerictests()
test_rc
}
+check_failure()
+{
+ echo -n "Testing that $1 fails as expected..."
+ reset_vals
+ TEST_STR="$1"
+ orig="$(cat $TARGET)"
+ echo -n "$TEST_STR" > $TARGET 2> /dev/null
+
+ # write should fail and $TARGET should retain its original value
+ if [ $? = 0 ] || [ "$(cat $TARGET)" != "$orig" ]; then
+ echo "FAIL" >&2
+ rc=1
+ else
+ echo "ok"
+ fi
+ test_rc
+}
+
+run_wideint_tests()
+{
+ # sysctl conversion functions receive a boolean sign and ulong
+ # magnitude; here we list the magnitudes we want to test (each of
+ # which will be tested in both positive and negative forms). Since
+ # none of these values fit in 32 bits, writing them to an int- or
+ # uint-typed sysctl should fail.
+ local magnitudes=(
+ # common boundary-condition values (zero, +1, -1, INT_MIN,
+ # and INT_MAX respectively) if truncated to lower 32 bits
+ # (potential for being falsely deemed in range)
+ 0x0000000100000000
+ 0x0000000100000001
+ 0x00000001ffffffff
+ 0x0000000180000000
+ 0x000000017fffffff
+
+ # these look like negatives, but without a leading '-' are
+ # actually large positives (should be rejected as above
+ # despite being zero/+1/-1/INT_MIN/INT_MAX in the lower 32)
+ 0xffffffff00000000
+ 0xffffffff00000001
+ 0xffffffffffffffff
+ 0xffffffff80000000
+ 0xffffffff7fffffff
+ )
+
+ for sign in '' '-'; do
+ for mag in "${magnitudes[@]}"; do
+ check_failure "${sign}${mag}"
+ done
+ done
+}
+
# Your test must accept digits 3 and 4 to use this
run_limit_digit()
{
@@ -556,6 +608,7 @@ sysctl_test_0001()
TEST_STR=$(( $ORIG + 1 ))
run_numerictests
+ run_wideint_tests
run_limit_digit
}
@@ -580,6 +633,7 @@ sysctl_test_0003()
TEST_STR=$(( $ORIG + 1 ))
run_numerictests
+ run_wideint_tests
run_limit_digit
run_limit_digit_int
}
@@ -592,6 +646,7 @@ sysctl_test_0004()
TEST_STR=$(( $ORIG + 1 ))
run_numerictests
+ run_wideint_tests
run_limit_digit
run_limit_digit_uint
}