The pre-compiled binary blobs nv-kernel.o_binary and nv-modeset-kernel.o_binary shipped with driver 590.48.01 fail objtool validation on kernel 6.19 when CONFIG_MITIGATION_RETHUNK is enabled. The blobs were compiled without -mfunction-return=thunk-extern and -mharden-sls=all, causing hundreds of er…

Thanks for the explanation and work-around. Modules built and loaded fine (with the warning) in 6.19.

Thank you for the report. Tracked internally on Bug #4452776. Currently under Engineering investigation.

Thanks for being that quick about reacting. I responded with the make.log in the other thread, but I’ll also post it here for consistency. make.log (1.6 MB)

fwiw In Gentoo we pass CONFIG_WERROR= and CONFIG_OBJTOOL_WERROR= to makewhen building out-of-tree modules (incl. nvidia) which overrides the kernel’s in the event that it is set (usually not for us, but it can be given users often configure their own kernels). As such it builds fine even with 6.19.…

Sadly, although the new 595.58.03 driver lists Fixed kernel module build issue with Linux kernel v6.19. the issue re: the building of the DKMS still persists. Find the make.log in the attachment. make.log (1.6 MB)

Objtool: 'naked' return found in MITIGATION_RETHUNK build with pre-compiled blobs on kernel 6.19

Graphics / Linux Linux

PCP_2024 March 6, 2026, 10:58pm 3

The (initial) issue is still present with the 595.54.04 BETA driver release. Thanks to the OP for reporting it.

Edit: I referenced this thread in the 595 release thread:

Topic		Replies	Views
Objtool: 'naked' return found in RETHUNK build. when build DKMS 525.53 in kernel 6.0.x gcc12.2.0 Linux	1	1796	November 15, 2022
Objtool: 'call without frame pointer save/setup' errors with pre-compiled blobs on kernel 6.19 with CONFIG_UNWINDER_FRAME_POINTER Linux	0	65	February 22, 2026
Problem installing NVIDIA 470.94 on openSuSE 15.3 with kernel 5.3.18-59.10 Linux kernel , driver	0	1069	January 7, 2022
[SOLVED] Linux openSUSE Leap 15.0 64bit unable to link .o files compiled by the nvidia installer Linux	20	1956	January 25, 2019
Nvidia driver 590.48.01 fails to install on 6.19-rcX kernel Linux	8	1466	February 23, 2026
375.39 does not build on kernel 4.2.0 Linux	2	719	April 19, 2017
[SOLVED] Faulty 340.9x drivers with kernels 4.2.x and 4.3.x Linux	2	6527	December 15, 2015
Can't install NVIDIA-Linux-x86_64-535.154.05 Linux	1	1163	February 14, 2024
465.31 Nvidia driver with Clang LTO enabled fails to load with 5.13 Linux	6	1777	December 20, 2021
Linux-6.1.27 compile 3080 driver error; uses GPL-only symbol ‘lockdep_rcu_suspicious’ Linux kernel , jetson	4	137	February 22, 2025

Objtool: 'naked' return found in MITIGATION_RETHUNK build with pre-compiled blobs on kernel 6.19

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