On Dec 30, 2025, at 21:39, Vivian Wang wangruikang@iscas.ac.cn wrote:
Since commit 4b47a3aefb29 ("kbuild: Restore pattern to avoid stripping .rela.dyn from vmlinux") vmlinux has .rel*.dyn preserved. Therefore, use vmlinux to produce Image, not vmlinux.unstripped.
Doing so fixes booting a RELOCATABLE=y Image with kexec. The problem is caused by this chain of events:
- Since commit 3e86e4d74c04 ("kbuild: keep .modinfo section in
vmlinux.unstripped"), vmlinux.unstripped gets a .modinfo section.
- The .modinfo section has SHF_ALLOC, so it ends up in Image, at the end
of it.
- The Image header's image_size field does not expect to include
.modinfo and does not account for it, since it should not be in Image.
- If .modinfo is large enough, the file size of Image ends up larger
than image_size, which eventually leads to it failing sanity_check_segment_list().
Using vmlinux instead of vmlinux.unstripped means that the unexpected .modinfo section is gone from Image, fixing the file size problem.
Cc: stable@vger.kernel.org Fixes: 3e86e4d74c04 ("kbuild: keep .modinfo section in vmlinux.unstripped") Signed-off-by: Vivian Wang wangruikang@iscas.ac.cn
arch/riscv/boot/Makefile | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile index bfc3d0b75b9b..5301adf5f3f5 100644 --- a/arch/riscv/boot/Makefile +++ b/arch/riscv/boot/Makefile @@ -31,11 +31,7 @@ $(obj)/xipImage: vmlinux FORCE
endif
-ifdef CONFIG_RELOCATABLE -$(obj)/Image: vmlinux.unstripped FORCE -else $(obj)/Image: vmlinux FORCE -endif $(call if_changed,objcopy)
$(obj)/Image.gz: $(obj)/Image FORCE
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8 change-id: 20251230-riscv-vmlinux-not-unstripped-30ec0c930fd2
Best regards,
Vivian "dramforever" Wang
Tested-by: Han Gao gaohan@iscas.ac.cn