linux-next: build failure in final build

Hi all,

After in the final build, today's linux-next build (arm64 allyesconfig)
failed like this:

ld: drivers/net/wireless/mediatek/mt76/usb_trace.o:(.bss+0x40): multiple definition of `__bpf_trace_btf_ids_dev_reg_evt'; drivers/net/wireless/mediatek/mt76/trace.o:(.bss+0x80): first defined here
ld: drivers/media/platform/nvidia/tegra-vde/vde.o:(.bss+0x180): multiple definition of `__bpf_trace_btf_ids_register_access'; drivers/gpu/drm/tegra/trace.o:(.bss+0x0): first defined here

Caused by commit

   eadc0725ab8d3 (tracing: Expose tracepoint BTF ids via tracefs)

which I have reverted for today.

On Wed, Jul 29, 2026 at 4:34 PM Mark Brown [off-list ref] wrote:

Hi all,

After in the final build, today's linux-next build (arm64 allyesconfig)
failed like this:

ld: drivers/net/wireless/mediatek/mt76/usb_trace.o:(.bss+0x40): multiple definition of `__bpf_trace_btf_ids_dev_reg_evt'; drivers/net/wireless/mediatek/mt76/trace.o:(.bss+0x80): first defined here
ld: drivers/media/platform/nvidia/tegra-vde/vde.o:(.bss+0x180): multiple definition of `__bpf_trace_btf_ids_register_access'; drivers/gpu/drm/tegra/trace.o:(.bss+0x0): first defined here

Caused by commit

   eadc0725ab8d3 (tracing: Expose tracepoint BTF ids via tracefs)

which I have reverted for today.

Thanks, I'll investigate.

On Wed, Jul 29, 2026 at 04:34:28PM +0100, Mark Brown wrote:

Hi all,

After in the final build, today's linux-next build (arm64 allyesconfig)
failed like this:

ld: drivers/net/wireless/mediatek/mt76/usb_trace.o:(.bss+0x40): multiple definition of `__bpf_trace_btf_ids_dev_reg_evt'; drivers/net/wireless/mediatek/mt76/trace.o:(.bss+0x80): first defined here
ld: drivers/media/platform/nvidia/tegra-vde/vde.o:(.bss+0x180): multiple definition of `__bpf_trace_btf_ids_register_access'; drivers/gpu/drm/tegra/trace.o:(.bss+0x0): first defined here

This issue is still present today.

On Mon, Aug 3, 2026 at 5:35 PM Mark Brown [off-list ref] wrote:

On Wed, Jul 29, 2026 at 04:34:28PM +0100, Mark Brown wrote:

quoted

Hi all,

After in the final build, today's linux-next build (arm64 allyesconfig)
failed like this:

ld: drivers/net/wireless/mediatek/mt76/usb_trace.o:(.bss+0x40): multiple definition of `__bpf_trace_btf_ids_dev_reg_evt'; drivers/net/wireless/mediatek/mt76/trace.o:(.bss+0x80): first defined here
ld: drivers/media/platform/nvidia/tegra-vde/vde.o:(.bss+0x180): multiple definition of `__bpf_trace_btf_ids_register_access'; drivers/gpu/drm/tegra/trace.o:(.bss+0x0): first defined here

This issue is still present today.

My fix for the issue:
https://lore.kernel.org/all/20260730-b4-fix_btf_tracefs-v2-1-6b66da8dc103@meta.com/
Steven, did you get a chance to look at it?

On Tue, Aug 4, 2026 at 12:35 PM Mykyta Yatsenko [off-list ref] wrote:

On Mon, Aug 3, 2026 at 5:35 PM Mark Brown [off-list ref] wrote:

quoted

On Wed, Jul 29, 2026 at 04:34:28PM +0100, Mark Brown wrote:

quoted

Hi all,

After in the final build, today's linux-next build (arm64 allyesconfig)
failed like this:

ld: drivers/net/wireless/mediatek/mt76/usb_trace.o:(.bss+0x40): multiple definition of `__bpf_trace_btf_ids_dev_reg_evt'; drivers/net/wireless/mediatek/mt76/trace.o:(.bss+0x80): first defined here
ld: drivers/media/platform/nvidia/tegra-vde/vde.o:(.bss+0x180): multiple definition of `__bpf_trace_btf_ids_register_access'; drivers/gpu/drm/tegra/trace.o:(.bss+0x0): first defined here

This issue is still present today.

My fix for the issue:
https://lore.kernel.org/all/20260730-b4-fix_btf_tracefs-v2-1-6b66da8dc103@meta.com/
Steven, did you get a chance to look at it?

It looks like Steven is on vacation, I'm adding Masami and Mathieu to
the thread.

On Tue, 4 Aug 2026 12:48:37 +0100
Mykyta Yatsenko [off-list ref] wrote:

It looks like Steven is on vacation, I'm adding Masami and Mathieu to
the thread.

I'm back. I'll start testing it today.

-- Steve