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Vivian Wang 64a0d47e0c riscv: boot: Always make Image from vmlinux, not vmlinux.unstripped 
commit 66562b66dc upstream.

Since commit 4b47a3aefb ("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 3e86e4d74c ("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: 3e86e4d74c ("kbuild: keep .modinfo section in vmlinux.unstripped")
Signed-off-by: Vivian Wang <wangruikang@iscas.ac.cn>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Han Gao <gaohan@iscas.ac.cn>
Link: https://patch.msgid.link/20251230-riscv-vmlinux-not-unstripped-v1-1-15f49df880df@iscas.ac.cn
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-01-17 16:35:12 +01:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.