Bug 219686

Summary:	[Regression clang 18-->19]: Two new link warnings with lto
Product:	Linux	Reporter:	Klaus Kusche (klaus.kusche)
Component:	Kernel	Assignee:	Virtual assignee for kernel bugs (linux-kernel)
Status:	RESOLVED ANSWERED
Severity:	normal
Priority:	P3
Hardware:	All
OS:	Linux
Kernel Version:		Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	.config

Description Klaus Kusche 2025-01-12 11:07:53 UTC

Gentoo linux on x86_64, kernel gentoo-sources 6.12.[89],
locally compiled with clang+lld and full lto, .config attached.

When switching from clang+lld 18.* to 19.1.6,
I got two new warnings in the lto link step when building the kernel:

  LD      vmlinux.o
ld.lld: warning: <unknown>:0:0: stack frame size (2056) exceeds limit (2048) in function 'dml_core_mode_support'
vmlinux.o: warning: objtool: start_unlink_intr+0xb7: can't find switch jump table

Comment 1 Klaus Kusche 2025-01-12 11:08:18 UTC

Created attachment 307479 [details]
.config

Comment 2 Artem S. Tashkinov 2025-01-13 07:54:17 UTC

This bug report will die here.

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