linux-kernel - [PATCH v2 2/2] x86: kexec_file: print appropriate variable

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Date:   Thu, 30 Apr 2020 18:31:42 +0200
From:   Łukasz Stelmach <l.stelmach@...sung.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Vivek Goyal <vgoyal@...hat.com>,
        Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>,
        AKASHI Takahiro <takahiro.akashi@...aro.org>,
        James Morse <james.morse@....com>,
        Bhupesh Sharma <bhsharma@...hat.com>,
        Łukasz Stelmach <l.stelmach@...sung.com>
Subject: [PATCH v2 2/2] x86: kexec_file: print appropriate variable

The value of kbuf->memsz may be different than kbuf->bufsz after calling
kexec_add_buffer(). Hence both values should be logged.

Fixes: ec2b9bfaac44e ("kexec_file: Change kexec_add_buffer to take kexec_buf as argument.")
Fixes: 27f48d3e633be ("kexec-bzImage64: support for loading bzImage using 64bit entry")
Fixes: dd5f726076cc7 ("kexec: support for kexec on panic using new system call")
Cc: Vivek Goyal <vgoyal@...hat.com>
Cc: Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>
Signed-off-by: Łukasz Stelmach <l.stelmach@...sung.com>
---
 arch/x86/kernel/crash.c           | 2 +-
 arch/x86/kernel/kexec-bzimage64.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index fd87b59452a3..d408e5b536fa 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -420,7 +420,7 @@ int crash_load_segments(struct kimage *image)
 	}
 	image->arch.elf_load_addr = kbuf.mem;
 	pr_debug("Loaded ELF headers at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
-		 image->arch.elf_load_addr, kbuf.bufsz, kbuf.bufsz);
+		 image->arch.elf_load_addr, kbuf.bufsz, kbuf.memsz);
 
 	return ret;
 }
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index db6578d45157..420393c58a73 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -434,7 +434,7 @@ static void *bzImage64_load(struct kimage *image, char *kernel,
 		goto out_free_params;
 	bootparam_load_addr = kbuf.mem;
 	pr_debug("Loaded boot_param, command line and misc at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
-		 bootparam_load_addr, kbuf.bufsz, kbuf.bufsz);
+		 bootparam_load_addr, kbuf.bufsz, kbuf.memsz);
 
 	/* Load kernel */
 	kbuf.buffer = kernel + kern16_size;
@@ -464,7 +464,7 @@ static void *bzImage64_load(struct kimage *image, char *kernel,
 		initrd_load_addr = kbuf.mem;
 
 		pr_debug("Loaded initrd at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
-				initrd_load_addr, initrd_len, initrd_len);
+				initrd_load_addr, kbuf.bufsz, kbuf.memsz);
 
 		setup_initrd(params, initrd_load_addr, initrd_len);
 	}
-- 
2.25.0