Bug 858794 – app-emulation/virtualbox-modules-6.1.34 fails to compile against 5.18.12 kernel (error: __write_overflow_field declared with attribute warning: detected write beyond size of field (1st parameter); maybe use struct_group)

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Alexey Mikhailov 2022-07-18 13:04:52 UTC]

Created attachment 792152 [details]
emerge @module-rebuild + emerge --info

virtualbox-modules-6.1.34 fails to build anymore. Tested with gcc 12.1.1 and 11.3.0, 5.18.9 and 5.8.12 kernels.

[Comment 1 Sam James 2022-07-18 13:06:02 UTC]

*** This bug has been marked as a duplicate of bug 847094 ***

[Comment 2 Alexey Mikhailov 2022-07-18 16:48:30 UTC]

I'd seen #847094, but that's another issue.

[Comment 3 Sam James 2022-07-18 23:38:14 UTC]

Can you try without -Werror?

[Comment 4 Alexey Mikhailov 2022-07-19 08:49:04 UTC]

I'm not sure where is -Werror coming from. I'd finished up modifying Makefile by adding '-Wno-error=attribute-warning' to VBOXMOD_CFLAGS in Makefile - looks like it fixed this issue. Going to investigate more.

[Comment 5 Alexey Mikhailov 2022-07-19 09:22:37 UTC]

I'd met error from #847094 afterwards. Patched VBoxNetFlt-linux.c by hands:

+#if RTLNX_VER_MIN(5,18,0)
+                local_bh_disable();
+                err = netif_rx(pBuf);
+                local_bh_enable();
+#else
                 err = netif_rx_ni(pBuf);
+#endif

Compilation finished successfully.