fuzz: avoid assertion for ExecContext.private_var_tmp triggered

Follow-up for 6156bec7a464815084fa5218fe782ea6cb20ad52.

Fixes #38037 and oss-fuzz#429112745.

diff --git a/src/core/fuzz-execute-serialize.c b/src/core/fuzz-execute-serialize.c
index a0875dc35ab84b6ae4a61bdf6741216ee95a8618..8114a67eef2d45216755bdf1f9c01f7374db599e 100644 (file)
--- a/src/core/fuzz-execute-serialize.c
+++ b/src/core/fuzz-execute-serialize.c
@@ -45,10 +45,10 @@ static void exec_fuzz_one(FILE *f, FDSet *fdset) {
         };
 
         exec_context_init(&exec_context);
-        exec_context.private_var_tmp = PRIVATE_TMP_DISCONNECTED;
         cgroup_context_init(&cgroup_context);
 
         (void) exec_deserialize_invocation(f, fdset, &exec_context, &command, &params, &runtime, &cgroup_context);
+        exec_context.private_var_tmp = PRIVATE_TMP_DISCONNECTED; /* The deserialization in the above may set an invalid value. */
         (void) exec_serialize_invocation(f, fdset, &exec_context, &command, &params, &runtime, &cgroup_context);
         (void) exec_deserialize_invocation(f, fdset, &exec_context, &command, &params, &runtime, &cgroup_context);
 

diff --git a/test/fuzz/fuzz-execute-serialize/oss-fuzz-429112745 b/test/fuzz/fuzz-execute-serialize/oss-fuzz-429112745
new file mode 100644 (file)
index 0000000..7940ad8
Binary files /dev/null and b/test/fuzz/fuzz-execute-serialize/oss-fuzz-429112745 differ