Hello Simon,
on qemu-arm_defconfig fails with
=> ut overlay Running 9 overlay tests Test: fdt_overlay_add_node_by_path test/overlay/cmd_ut_overlay.c:127, fdt_overlay_add_node_by_path(): off >= 0 Test: fdt_overlay_add_node_by_phandle test/overlay/cmd_ut_overlay.c:113, fdt_overlay_add_node_by_phandle(): off >= 0 Test: fdt_overlay_add_str_property test/overlay/cmd_ut_overlay.c:100, fdt_overlay_add_str_property(): 0 == fdt_getprop_str(fdt, "/test-node", "test-str-property-2", &val): Expected 0, got -9 Test: fdt_overlay_add_subnode_property test/overlay/cmd_ut_overlay.c:141, fdt_overlay_add_subnode_property(): off >= 0 Test: fdt_overlay_change_int_property test/overlay/cmd_ut_overlay.c:74, fdt_overlay_change_int_property(): 0 == ut_fdt_getprop_u32(fdt, "/test-node", "test-int-property", &val): Expected 0, got -9 Test: fdt_overlay_change_str_property test/overlay/cmd_ut_overlay.c:87, fdt_overlay_change_str_property(): 0 == fdt_getprop_str(fdt, "/test-node", "test-str-property", &val): Expected 0, got -9 Test: fdt_overlay_local_phandle test/overlay/cmd_ut_overlay.c:158, fdt_overlay_local_phandle(): off >= 0 Test: fdt_overlay_local_phandles test/overlay/cmd_ut_overlay.c:183, fdt_overlay_local_phandles(): off >= 0 Test: fdt_overlay_stacked test/overlay/cmd_ut_overlay.c:212, fdt_overlay_stacked(): 0 == ut_fdt_getprop_u32(fdt, "/new-local-node", "stacked-test-int-property", &val): Expected 0, got -9 Failures: 9
This is reproducable with v2018.03, v2018.05, v2018.07, v2018.09, v2018.11 and with current origin/master (358902586727 "Merge branch '2018-12-06-master-imports'").
For the elder releases I had to apply d796735c334b "test: overlay: add missing include"
The value of off is -9 in the tests above. This is -FDT_ERR_BADMAGIC.
Adding some debug output sheds more light:
test/overlay/cmd_ut_overlay.c(290) do_ut_overlay: fdt_base_copy 000000007ef33340 test/overlay/cmd_ut_overlay.c(291) do_ut_overlay: uts->priv 000000007ef33340 Running 9 overlay tests Test: fdt_overlay_add_node_by_path test/overlay/cmd_ut_overlay.c(127) fdt_overlay_add_node_by_path: uts->priv 0000000000000000
This is the patch that led to problem: e93232e15ec9 ("test: overlay: Use cmd_ut_category()")
The uts created in do_ut_overlay() is not the one used in cmd_ut_category().
The easiest fix would be using a static variable for passing the fdt.
The neatest solution would be cmd_ut_category() calling an initialization function for the category so that we can use a single instance of uts for the whole test.
As this API is your design I would prefer leaving the resolution to you.
Besides resolving the error I think we should run 'ut overlay' on Travis CI for all qemu platforms.
Best regards
Heinrich