github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 01:53:29 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

sysctl: Add 0012 to test the u8 range check

Browse Source 
Add a sysctl test that uses the new u8 test ctl files in a created by
the sysctl test module. Check that the u8 proc file that is valid is
created and that there are two messages in dmesg for the files that were
out of range.

Reviewed-by: Kees Cook <kees@kernel.org>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
This commit is contained in:
Joel Granados 2025-03-21 09:44:39 +01:00
parent 138303ec6c
commit 8e4acabdc8
1 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
tools/testing/selftests/sysctl/sysctl.sh
View File

@ -36,6 +36,7 @@ ALL_TESTS="$ALL_TESTS 0008:1:1:match_int:1"
ALL_TESTS="$ALL_TESTS 0009:1:1:unregister_error:0"
ALL_TESTS="$ALL_TESTS 0010:1:1:mnt/mnt_error:0"
ALL_TESTS="$ALL_TESTS 0011:1:1:empty_add:0"
ALL_TESTS="$ALL_TESTS 0012:1:1:u8_valid:0"
function allow_user_defaults()
{
@ -851,6 +852,34 @@ sysctl_test_0011()
return 0
}
sysctl_test_0012()
{
TARGET="${SYSCTL}/$(get_test_target 0012)"
echo -n "Testing u8 range check in sysctl table check in ${TARGET} ... "
if [ ! -f ${TARGET} ]; then
echo -e "FAIL\nCould not create ${TARGET}" >&2
rc=1
test_rc
fi
local u8over_msg=$(dmesg | grep "u8_over range value" | wc -l)
if [ ! ${u8over_msg} -eq 1 ]; then
echo -e "FAIL\nu8 overflow not detected" >&2
rc=1
test_rc
fi
local u8under_msg=$(dmesg | grep "u8_under range value" | wc -l)
if [ ! ${u8under_msg} -eq 1 ]; then
echo -e "FAIL\nu8 underflow not detected" >&2
rc=1
test_rc
fi
echo "OK"
return 0
}
list_tests()
{
echo "Test ID list:"
@ -870,6 +899,7 @@ list_tests()
echo "0009 x $(get_test_count 0009) - tests sysct unregister"
echo "0010 x $(get_test_count 0010) - tests sysct mount point"
echo "0011 x $(get_test_count 0011) - tests empty directories"
echo "0012 x $(get_test_count 0012) - tests range check for u8 proc_handler"
}
usage()