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s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer

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Since commit 3e86e4d74c ("kbuild: keep .modinfo section in
vmlinux.unstripped") the .modinfo section which has SHF_ALLOC ends up
in bzImage after the SecureBoot trailer. This breaks SecureBoot because
the bootloader can no longer find the SecureBoot trailer with kernel's
signature at the expected location in bzImage. To fix the bug,
move discarded sections before the ELF_DETAILS macro and discard
the .modinfo section which is not needed by the decompressor.

Fixes: 3e86e4d74c ("kbuild: keep .modinfo section in vmlinux.unstripped")
Cc: stable@vger.kernel.org
Suggested-by: Vasily Gorbik <gor@linux.ibm.com>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Tested-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Alexander Egorenkov 2026-01-21 14:59:50 +01:00 • committed by Heiko Carstens
parent 3317785a88
commit ddc6cbef3e
1 changed files with 9 additions and 8 deletions
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17
arch/s390/boot/vmlinux.lds.S
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@ -137,6 +137,15 @@ SECTIONS
}
_end = .;
/* Sections to be discarded */
/DISCARD/ : {
COMMON_DISCARDS
*(.eh_frame)
*(*__ksymtab*)
*(___kcrctab*)
*(.modinfo)
}
DWARF_DEBUG
ELF_DETAILS
@ -161,12 +170,4 @@ SECTIONS
*(.rela.*) *(.rela_*)
}
ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!")
/* Sections to be discarded */
/DISCARD/ : {
COMMON_DISCARDS
*(.eh_frame)
*(*__ksymtab*)
*(___kcrctab*)
}
}