From: "tip-bot2 for Kees Cook" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: linux-ia64@vger.kernel.org,
Dave Hansen <dave.hansen@linux.intel.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
David Howells <dhowells@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>, Will Deacon <will@kernel.org>,
Ingo Molnar <mingo@kernel.org>,
linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
linux-c6x-dev@linux-c6x.org,
Yoshinori Sato <ysato@users.sourceforge.jp>,
x86-ml <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@suse.de>, Dave Young <dyoung@redhat.com>,
Thomas Lendacky <Thomas.Lendacky@amd.com>,
Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Juergen Gross <jgross@suse.com>, Michal Simek <monstr@monstr.eu>,
linux-kernel@vger.kernel.org,
Robert Richter <rrichter@marvell.com>,
linux-alpha@vger.kernel.org,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [tip: x86/build] x86/mm: Report actual image regions in /proc/iomem
Date: Tue, 05 Nov 2019 09:27:26 -0000 [thread overview]
Message-ID: <157294604609.29376.12550972363918870518.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20191029211351.13243-29-keescook@chromium.org>
The following commit has been merged into the x86/build branch of tip:
Commit-ID: a329975491aafcb1fb6e2fad0de22cae5c16154f
Gitweb: https://git.kernel.org/tip/a329975491aafcb1fb6e2fad0de22cae5c16154f
Author: Kees Cook <keescook@chromium.org>
AuthorDate: Tue, 29 Oct 2019 14:13:50 -07:00
Committer: Borislav Petkov <bp@suse.de>
CommitterDate: Mon, 04 Nov 2019 19:02:25 +01:00
x86/mm: Report actual image regions in /proc/iomem
The resource reservations in /proc/iomem made for the kernel image did
not reflect the gaps between text, rodata, and data. Add the "rodata"
resource and update the start/end calculations to match the respective
calls to free_kernel_image_pages().
Before (booted with "nokaslr" for easier comparison):
00100000-bffd9fff : System RAM
01000000-01e011d0 : Kernel code
01e011d1-025619bf : Kernel data
02a95000-035fffff : Kernel bss
After:
00100000-bffd9fff : System RAM
01000000-01e011d0 : Kernel code
02000000-023d4fff : Kernel rodata
02400000-025619ff : Kernel data
02a95000-035fffff : Kernel bss
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: linux-alpha@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-ia64@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Robert Richter <rrichter@marvell.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: https://lkml.kernel.org/r/20191029211351.13243-29-keescook@chromium.org
---
arch/x86/kernel/setup.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 77ea96b..591e885 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -143,6 +143,13 @@ struct boot_params boot_params;
/*
* Machine setup..
*/
+static struct resource rodata_resource = {
+ .name = "Kernel rodata",
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
+};
+
static struct resource data_resource = {
.name = "Kernel data",
.start = 0,
@@ -951,7 +958,9 @@ void __init setup_arch(char **cmdline_p)
code_resource.start = __pa_symbol(_text);
code_resource.end = __pa_symbol(_etext)-1;
- data_resource.start = __pa_symbol(_etext);
+ rodata_resource.start = __pa_symbol(__start_rodata);
+ rodata_resource.end = __pa_symbol(__end_rodata)-1;
+ data_resource.start = __pa_symbol(_sdata);
data_resource.end = __pa_symbol(_edata)-1;
bss_resource.start = __pa_symbol(__bss_start);
bss_resource.end = __pa_symbol(__bss_stop)-1;
@@ -1040,6 +1049,7 @@ void __init setup_arch(char **cmdline_p)
/* after parse_early_param, so could debug it */
insert_resource(&iomem_resource, &code_resource);
+ insert_resource(&iomem_resource, &rodata_resource);
insert_resource(&iomem_resource, &data_resource);
insert_resource(&iomem_resource, &bss_resource);
next prev parent reply other threads:[~2019-11-05 9:37 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-29 21:13 [PATCH v3 00/29] vmlinux.lds.h: Refactor EXCEPTION_TABLE and NOTES Kees Cook
2019-10-29 21:13 ` [PATCH v3 01/29] powerpc: Rename "notes" PT_NOTE to "note" Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 02/29] powerpc: Remove PT_NOTE workaround Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 03/29] powerpc: Rename PT_LOAD identifier "kernel" to "text" Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 04/29] alpha: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 05/29] ia64: Rename PT_LOAD identifier "code" " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 06/29] s390: Move RO_DATA into "text" PT_LOAD Program Header Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 07/29] x86: Restore "text" Program Header with dummy section Kees Cook
2019-11-05 9:27 ` [tip: x86/build] x86/vmlinux: " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 08/29] vmlinux.lds.h: Provide EMIT_PT_NOTE to indicate export of .notes Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 09/29] vmlinux.lds.h: Move Program Header restoration into NOTES macro Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 10/29] vmlinux.lds.h: Move NOTES into RO_DATA Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 11/29] vmlinux.lds.h: Replace RODATA with RO_DATA Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 12/29] vmlinux.lds.h: Replace RO_DATA_SECTION " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 13/29] vmlinux.lds.h: Replace RW_DATA_SECTION with RW_DATA Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 14/29] vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 15/29] x86: Actually use _etext for end of text segment Kees Cook
2019-11-05 9:27 ` [tip: x86/build] x86/vmlinux: Actually use _etext for the end of the " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 16/29] x86: Move EXCEPTION_TABLE to RO_DATA segment Kees Cook
2019-11-05 9:27 ` [tip: x86/build] x86/vmlinux: " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 17/29] alpha: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 18/29] arm64: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 19/29] c6x: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 20/29] h8300: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 21/29] ia64: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 22/29] microblaze: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 23/29] parisc: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 24/29] powerpc: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 25/29] xtensa: " Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 26/29] x86/mm: Remove redundant &s on addresses Kees Cook
2019-11-05 9:27 ` [tip: x86/build] x86/mm: Remove redundant address-of operators " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 27/29] x86/mm: Report which part of kernel image is freed Kees Cook
2019-11-05 9:27 ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 28/29] x86/mm: Report actual image regions in /proc/iomem Kees Cook
2019-11-05 9:27 ` tip-bot2 for Kees Cook [this message]
2019-10-29 21:13 ` [PATCH v3 29/29] x86: Use INT3 instead of NOP for linker fill bytes Kees Cook
2019-11-05 9:27 ` [tip: x86/build] x86/vmlinux: " tip-bot2 for Kees Cook
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