From: Coiby Xu <coiby.xu@gmail.com>
To: kexec@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org, Baoquan He <bhe@redhat.com>,
Dave Young <dyoung@redhat.com>, Will Deacon <will@kernel.org>,
"Eric W . Biederman" <ebiederm@xmission.com>,
Coiby Xu <coxu@redhat.com>, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT
AND 64-BIT))
Subject: [RESEND PATCH v3 2/3] kexec, KEYS: make the code in bzImage64_verify_sig generic
Date: Fri, 4 Mar 2022 10:03:40 +0800 [thread overview]
Message-ID: <20220304020341.85583-3-coiby.xu@gmail.com> (raw)
In-Reply-To: <20220304020341.85583-1-coiby.xu@gmail.com>
From: Coiby Xu <coxu@redhat.com>
The code in bzImage64_verify_sig could make use of system keyrings including
.buitin_trusted_keys, .secondary_trusted_keys and .platform keyring to verify
signed kernel image as PE file. Make it generic so both x86_64 and arm64 can
use it.
Signed-off-by: Coiby Xu <coiby.xu@gmail.com>
---
arch/x86/kernel/kexec-bzimage64.c | 13 +------------
include/linux/kexec.h | 7 +++++++
kernel/kexec_file.c | 17 +++++++++++++++++
3 files changed, 25 insertions(+), 12 deletions(-)
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index 170d0fd68b1f..f73aab3fde33 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -17,7 +17,6 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/efi.h>
-#include <linux/verification.h>
#include <asm/bootparam.h>
#include <asm/setup.h>
@@ -531,17 +530,7 @@ static int bzImage64_cleanup(void *loader_data)
#ifdef CONFIG_KEXEC_BZIMAGE_VERIFY_SIG
static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len)
{
- int ret;
-
- ret = verify_pefile_signature(kernel, kernel_len,
- VERIFY_USE_SECONDARY_KEYRING,
- VERIFYING_KEXEC_PE_SIGNATURE);
- if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) {
- ret = verify_pefile_signature(kernel, kernel_len,
- VERIFY_USE_PLATFORM_KEYRING,
- VERIFYING_KEXEC_PE_SIGNATURE);
- }
- return ret;
+ return kexec_kernel_verify_pe_sig(kernel, kernel_len);
}
#endif
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 755fed183224..2fe39e946988 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -19,6 +19,7 @@
#include <asm/io.h>
#include <uapi/linux/kexec.h>
+#include <linux/verification.h>
#ifdef CONFIG_KEXEC_CORE
#include <linux/list.h>
@@ -196,6 +197,12 @@ int arch_kexec_apply_relocations(struct purgatory_info *pi,
const Elf_Shdr *relsec,
const Elf_Shdr *symtab);
int arch_kimage_file_post_load_cleanup(struct kimage *image);
+#ifdef CONFIG_KEXEC_SIG
+#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION
+int kexec_kernel_verify_pe_sig(const char *kernel,
+ unsigned long kernel_len);
+#endif
+#endif
int arch_kexec_locate_mem_hole(struct kexec_buf *kbuf);
extern int kexec_add_buffer(struct kexec_buf *kbuf);
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 3720435807eb..754885b96aab 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -165,6 +165,23 @@ void kimage_file_post_load_cleanup(struct kimage *image)
}
#ifdef CONFIG_KEXEC_SIG
+#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION
+int kexec_kernel_verify_pe_sig(const char *kernel, unsigned long kernel_len)
+{
+ int ret;
+
+ ret = verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_SECONDARY_KEYRING,
+ VERIFYING_KEXEC_PE_SIGNATURE);
+ if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) {
+ ret = verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_PLATFORM_KEYRING,
+ VERIFYING_KEXEC_PE_SIGNATURE);
+ }
+ return ret;
+}
+#endif
+
static int kexec_image_verify_sig(struct kimage *image, void *buf,
unsigned long buf_len)
{
--
2.34.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-03-04 2:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 2:03 [RESEND PATCH v3 0/3] use more system keyrings to verify arm64 kdump kernel image signature Coiby Xu
2022-03-04 2:03 ` [RESEND PATCH v3 1/3] kexec: clean up arch_kexec_kernel_verify_sig Coiby Xu
2022-03-17 12:45 ` Baoquan He
2022-03-18 2:48 ` Coiby Xu
2022-03-18 3:27 ` Baoquan He
2022-03-18 7:18 ` Coiby Xu
2022-03-18 8:54 ` Baoquan He
2022-03-18 9:43 ` Coiby Xu
2022-03-04 2:03 ` Coiby Xu [this message]
2022-03-04 2:03 ` [RESEND PATCH v3 3/3] arm64: kexec_file: use more system keyrings to verify kernel image signature Coiby Xu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220304020341.85583-3-coiby.xu@gmail.com \
--to=coiby.xu@gmail.com \
--cc=bhe@redhat.com \
--cc=bp@alien8.de \
--cc=coxu@redhat.com \
--cc=dave.hansen@linux.intel.com \
--cc=dyoung@redhat.com \
--cc=ebiederm@xmission.com \
--cc=hpa@zytor.com \
--cc=kexec@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).