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authorLucas De Marchi <lucas.demarchi@intel.com>2020-03-10 01:17:12 -0700
committerLucas De Marchi <lucas.demarchi@intel.com>2020-03-13 09:23:58 -0700
commit3c1073e17af877ff27ed7d1906494723f969710e (patch)
tree16051b4c213e5660b7bb47e89f7db4d28ee0d303
parent0262531556a3543f33c7a553b43e697377f8bd99 (diff)
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testsuite: check for ill-formed kcmdline
Commit ca3bf5d47cec ("iommu/amd: Introduces ivrs_acpihid kernel parameter") in the kernel introduced an ill-formed kernel parameter, ivrs_acpihid. The problem is that it may have a dot on the key side: "ivrs_acpihid[00:14.5]=AMD0020:0". This could potentially trip our parser of module options, but right now it's working as intended: the only thing that happens is that after deciding "ivrs_acpihid[00:14" is a module name, it will fail the underscores() routine and the option will be ignored from the kmod pov (not kernel's pov since that driver parsers the kernel command line by itself).
-rw-r--r--testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/correct.txt6
-rw-r--r--testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/proc/cmdline1
-rw-r--r--testsuite/test-modprobe.c25
3 files changed, 32 insertions, 0 deletions
diff --git a/testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/correct.txt b/testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/correct.txt
new file mode 100644
index 0000000..7a087ef
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/correct.txt
@@ -0,0 +1,6 @@
+options psmouse foo=2
+options psmouse bar=1
+options psmouse zinga=test
+
+# End of configuration files. Dumping indexes now:
+
diff --git a/testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/proc/cmdline b/testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/proc/cmdline
new file mode 100644
index 0000000..14bbd2e
--- /dev/null
+++ b/testsuite/rootfs-pristine/test-modprobe/module-param-kcmdline6/proc/cmdline
@@ -0,0 +1 @@
+psmouse.foo=2 ivrs_acpihid[14:00.5]=AMD0020:00 psmouse.bar=1 psmouse.zinga=test
diff --git a/testsuite/test-modprobe.c b/testsuite/test-modprobe.c
index 1cace82..f908d56 100644
--- a/testsuite/test-modprobe.c
+++ b/testsuite/test-modprobe.c
@@ -328,6 +328,31 @@ DEFINE_TEST(modprobe_param_kcmdline5,
);
+static noreturn int modprobe_param_kcmdline6(const struct test *t)
+{
+ const char *progname = ABS_TOP_BUILDDIR "/tools/modprobe";
+ const char *const args[] = {
+ progname,
+ "-c",
+ NULL,
+ };
+
+ test_spawn_prog(progname, args);
+ exit(EXIT_FAILURE);
+}
+DEFINE_TEST(modprobe_param_kcmdline6,
+ .description = "check if dots on other parts of kcmdline don't confuse our parser",
+ .config = {
+ [TC_UNAME_R] = "4.4.4",
+ [TC_ROOTFS] = TESTSUITE_ROOTFS "test-modprobe/module-param-kcmdline6",
+ },
+ .output = {
+ .out = TESTSUITE_ROOTFS "test-modprobe/module-param-kcmdline6/correct.txt",
+ },
+ .modules_loaded = "",
+ );
+
+
static noreturn int modprobe_force(const struct test *t)
{
const char *progname = ABS_TOP_BUILDDIR "/tools/modprobe";