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Accepting request 888430 from Kernel:kdump

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OBS-URL: https://build.opensuse.org/request/show/888430
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/kexec-tools?expand=0&rev=139
This commit is contained in:
Dominique Leuenberger 2021-04-26 14:38:37 +00:00 committed by Git OBS Bridge
commit fb2d2f5268
13 changed files with 57 additions and 915 deletions
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3
kexec-tools-2.0.20.tar.xz
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@ -1,3 +0,0 @@
version https://git-lfs.github.com/spec/v1
oid sha256:dad8077f0315445d1f6335579fc4ade222facf82a67124974c7be5303ba4f8c8
size 297476

3
kexec-tools-2.0.21.tar.xz Normal file
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@ -0,0 +1,3 @@
version https://git-lfs.github.com/spec/v1
oid sha256:e113142dee891638ad96e0f72cf9277b244477619470b30c41999d312e8e8702
size 303300

92
kexec-tools-Remove-duplicated-variable-declarations.patch
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@ -1,92 +0,0 @@
From cc087b11462af9f971a2c090d07e8d780a867b50 Mon Sep 17 00:00:00 2001
From: Kairui Song <kasong@redhat.com>
Date: Wed, 29 Jan 2020 13:38:19 +0800
Subject: kexec-tools: Remove duplicated variable declarations
References: boo#1160399
Upstream: merged
Git-commit: cc087b11462af9f971a2c090d07e8d780a867b50
When building kexec-tools for Fedora 32, following error is observed:
/usr/bin/ld: kexec/arch/x86_64/kexec-bzImage64.o:(.bss+0x0): multiple definition of `bzImage_support_efi_boot';
kexec/arch/i386/kexec-bzImage.o:(.bss+0x0): first defined here
/builddir/build/BUILD/kexec-tools-2.0.20/kexec/arch/arm/../../fs2dt.h:33: multiple definition of `my_debug';
kexec/fs2dt.o:/builddir/build/BUILD/kexec-tools-2.0.20/kexec/fs2dt.h:33: first defined here
/builddir/build/BUILD/kexec-tools-2.0.20/kexec/arch/arm64/kexec-arm64.h:68: multiple definition of `arm64_mem';
kexec/fs2dt.o:/builddir/build/BUILD/kexec-tools-2.0.20/././kexec/arch/arm64/kexec-arm64.h:68: first defined here
/builddir/build/BUILD/kexec-tools-2.0.20/kexec/arch/arm64/kexec-arm64.h:54: multiple definition of `initrd_size';
kexec/fs2dt.o:/builddir/build/BUILD/kexec-tools-2.0.20/././kexec/arch/arm64/kexec-arm64.h:54: first defined here
/builddir/build/BUILD/kexec-tools-2.0.20/kexec/arch/arm64/kexec-arm64.h:53: multiple definition of `initrd_base';
kexec/fs2dt.o:/builddir/build/BUILD/kexec-tools-2.0.20/././kexec/arch/arm64/kexec-arm64.h:53: first defined here
And apparently, these variables are wrongly declared multiple times. So
remove duplicated declaration.
Signed-off-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
kexec/arch/arm64/kexec-arm64.h | 6 +++---
kexec/arch/ppc64/kexec-elf-ppc64.c | 2 --
kexec/arch/x86_64/kexec-bzImage64.c | 1 -
kexec/fs2dt.h | 2 +-
4 files changed, 4 insertions(+), 7 deletions(-)
--- a/kexec/arch/arm64/kexec-arm64.h
+++ b/kexec/arch/arm64/kexec-arm64.h
@@ -50,8 +50,8 @@ int zImage_arm64_load(int argc, char **a
void zImage_arm64_usage(void);
-off_t initrd_base;
-off_t initrd_size;
+extern off_t initrd_base;
+extern off_t initrd_size;
/**
* struct arm64_mem - Memory layout info.
@@ -65,7 +65,7 @@ struct arm64_mem {
};
#define arm64_mem_ngv UINT64_MAX
-struct arm64_mem arm64_mem;
+extern struct arm64_mem arm64_mem;
uint64_t get_phys_offset(void);
uint64_t get_vp_offset(void);
--- a/kexec/arch/ppc64/kexec-elf-ppc64.c
+++ b/kexec/arch/ppc64/kexec-elf-ppc64.c
@@ -44,8 +44,6 @@
uint64_t initrd_base, initrd_size;
unsigned char reuse_initrd = 0;
const char *ramdisk;
-/* Used for enabling printing message from purgatory code */
-int my_debug = 0;
int elf_ppc64_probe(const char *buf, off_t len)
{
--- a/kexec/arch/x86_64/kexec-bzImage64.c
+++ b/kexec/arch/x86_64/kexec-bzImage64.c
@@ -42,7 +42,6 @@
#include <arch/options.h>
static const int probe_debug = 0;
-int bzImage_support_efi_boot;
int bzImage64_probe(const char *buf, off_t len)
{
--- a/kexec/fs2dt.h
+++ b/kexec/fs2dt.h
@@ -30,7 +30,7 @@ extern struct bootblock bb[1];
/* Used for enabling printing message from purgatory code
* Only has implemented for PPC64 */
-int my_debug;
+extern int my_debug;
extern int dt_no_old_root;
void reserve(unsigned long long where, unsigned long long length);

84
kexec-tools-add-variant-helper-functions.patch
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@ -1,84 +0,0 @@
From: AKASHI Takahiro <takahiro.akashi@linaro.org>
Date: Fri, 11 Jan 2019 01:59:44 +0900
Subject: kexec: add variant helper functions for handling memory regions
References: jsc#SLE-9943
Upstream: not yet, it's under review in upstream
mem_regions_alloc_and_add() and mem_regions_alloc_and_exclude() are
functionally equivalent to, respectively, mem_regions_add() and
mem_regions_exclude() except the formers will re-allocate memory
dynamically when no more entries are available in 'ranges' array.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Chester Lin <clin@suse.com>
---
kexec/mem_regions.c | 42 ++++++++++++++++++++++++++++++++++++++++++
kexec/mem_regions.h | 7 +++++++
2 files changed, 49 insertions(+)
diff --git a/kexec/mem_regions.c b/kexec/mem_regions.c
index 50c8abccb93a..ad7d3f13fd84 100644
--- a/kexec/mem_regions.c
+++ b/kexec/mem_regions.c
@@ -125,3 +125,45 @@ int mem_regions_exclude(struct memory_ranges *ranges,
}
return 0;
}
+
+#define KEXEC_MEMORY_RANGES 16
+
+int mem_regions_alloc_and_add(struct memory_ranges *ranges,
+ unsigned long long base,
+ unsigned long long length, int type)
+{
+ void *new_ranges;
+
+ if (ranges->size >= ranges->max_size) {
+ new_ranges = realloc(ranges->ranges,
+ sizeof(struct memory_range) *
+ (ranges->max_size + KEXEC_MEMORY_RANGES));
+ if (!new_ranges)
+ return -1;
+
+ ranges->ranges = new_ranges;
+ ranges->max_size += KEXEC_MEMORY_RANGES;
+ }
+
+ return mem_regions_add(ranges, base, length, type);
+}
+
+int mem_regions_alloc_and_exclude(struct memory_ranges *ranges,
+ const struct memory_range *range)
+{
+ void *new_ranges;
+
+ /* for safety, we should have at least one free entry in ranges */
+ if (ranges->size >= ranges->max_size) {
+ new_ranges = realloc(ranges->ranges,
+ sizeof(struct memory_range) *
+ (ranges->max_size + KEXEC_MEMORY_RANGES));
+ if (!new_ranges)
+ return -1;
+
+ ranges->ranges = new_ranges;
+ ranges->max_size += KEXEC_MEMORY_RANGES;
+ }
+
+ return mem_regions_exclude(ranges, range);
+}
diff --git a/kexec/mem_regions.h b/kexec/mem_regions.h
index ae9e972b0206..e306d67e3261 100644
--- a/kexec/mem_regions.h
+++ b/kexec/mem_regions.h
@@ -12,4 +12,11 @@ int mem_regions_exclude(struct memory_ranges *ranges,
int mem_regions_add(struct memory_ranges *ranges, unsigned long long base,
unsigned long long length, int type);
+int mem_regions_alloc_and_exclude(struct memory_ranges *ranges,
+ const struct memory_range *range);
+
+int mem_regions_alloc_and_add(struct memory_ranges *ranges,
+ unsigned long long base,
+ unsigned long long length, int type);
+
#endif

77
kexec-tools-arm64-kdump-deal-with-resource-entries-in-proc-iomem.patch
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@ -1,77 +0,0 @@
From: AKASHI Takahiro <takahiro.akashi@linaro.org>
Date: Fri, 11 Jan 2019 01:59:46 +0900
Subject: arm64: kdump: deal with a lot of resource entries in /proc/iomem
References: jsc#SLE-9943
Upstream: not yet, it's under review in upstream
As described in the commit ("arm64: kexec: allocate memory space avoiding
reserved regions"), /proc/iomem now has a lot of "reserved" entries, and
it's not just enough to have a fixed size of memory range array.
With this patch, kdump is allowed to handle arbitrary number of memory
ranges, using mem_regions_alloc_and_xxx() functions.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Chester Lin <clin@suse.com>
---
kexec/arch/arm64/crashdump-arm64.c | 25 ++++++++++---------------
1 file changed, 10 insertions(+), 15 deletions(-)
diff --git a/kexec/arch/arm64/crashdump-arm64.c b/kexec/arch/arm64/crashdump-arm64.c
index 4fd7aa8fd43c..38d1a0f3000d 100644
--- a/kexec/arch/arm64/crashdump-arm64.c
+++ b/kexec/arch/arm64/crashdump-arm64.c
@@ -23,13 +23,8 @@
#include "kexec-elf.h"
#include "mem_regions.h"
-/* memory ranges on crashed kernel */
-static struct memory_range system_memory_ranges[CRASH_MAX_MEMORY_RANGES];
-static struct memory_ranges system_memory_rgns = {
- .size = 0,
- .max_size = CRASH_MAX_MEMORY_RANGES,
- .ranges = system_memory_ranges,
-};
+/* memory ranges of crashed kernel */
+static struct memory_ranges system_memory_rgns;
/* memory range reserved for crashkernel */
struct memory_range crash_reserved_mem;
@@ -82,7 +77,7 @@ static uint64_t get_kernel_page_offset(void)
*
* This function is called once for each memory region found in /proc/iomem.
* It locates system RAM and crashkernel reserved memory and places these to
- * variables, respectively, system_memory_ranges and crash_reserved_mem.
+ * variables, respectively, system_memory_rgns and usablemem_rgns.
*/
static int iomem_range_callback(void *UNUSED(data), int UNUSED(nr),
@@ -90,11 +85,11 @@ static int iomem_range_callback(void *UNUSED(data), int UNUSED(nr),
unsigned long long length)
{
if (strncmp(str, CRASH_KERNEL, strlen(CRASH_KERNEL)) == 0)
- return mem_regions_add(&usablemem_rgns,
- base, length, RANGE_RAM);
+ return mem_regions_alloc_and_add(&usablemem_rgns,
+ base, length, RANGE_RAM);
else if (strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) == 0)
- return mem_regions_add(&system_memory_rgns,
- base, length, RANGE_RAM);
+ return mem_regions_alloc_and_add(&system_memory_rgns,
+ base, length, RANGE_RAM);
else if (strncmp(str, KERNEL_CODE, strlen(KERNEL_CODE)) == 0)
elf_info.kern_paddr_start = base;
else if (strncmp(str, KERNEL_DATA, strlen(KERNEL_DATA)) == 0)
@@ -135,9 +130,9 @@ static int crash_get_memory_ranges(void)
dbgprint_mem_range("Reserved memory range", &crash_reserved_mem, 1);
- if (mem_regions_exclude(&system_memory_rgns, &crash_reserved_mem)) {
- fprintf(stderr,
- "Error: Number of crash memory ranges excedeed the max limit\n");
+ if (mem_regions_alloc_and_exclude(&system_memory_rgns,
+ &crash_reserved_mem)) {
+ fprintf(stderr, "Cannot allocate memory for ranges\n");
return -ENOMEM;
}

247
kexec-tools-arm64-kexec-allocate-memory-space-avoiding-reserved-regions.patch
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@ -1,247 +0,0 @@
From: AKASHI Takahiro <takahiro.akashi@linaro.org>
Date: Fri, 11 Jan 2019 01:59:45 +0900
Subject: arm64: kexec: allocate memory space avoiding reserved regions
References: jsc#SLE-9943
Upstream: not yet, it's under review in upstream
On UEFI/ACPI-only system, some memory regions, including but not limited
to UEFI memory map and ACPI tables, must be preserved across kexec'ing.
Otherwise, they can be corrupted and result in early failure in booting
a new kernel.
In recent kernels, /proc/iomem now has an extended file format like:
40000000-5871ffff : System RAM
41800000-426affff : Kernel code
426b0000-42aaffff : reserved
42ab0000-42c64fff : Kernel data
54400000-583fffff : Crash kernel
58590000-585effff : reserved
58700000-5871ffff : reserved
58720000-58b5ffff : reserved
58b60000-5be3ffff : System RAM
58b61000-58b61fff : reserved
59a77000-59a77fff : reserved
5be40000-5becffff : reserved
5bed0000-5bedffff : System RAM
5bee0000-5bffffff : reserved
5c000000-5fffffff : System RAM
5da00000-5e9fffff : reserved
5ec00000-5edfffff : reserved
5ef6a000-5ef6afff : reserved
5ef6b000-5efcafff : reserved
5efcd000-5efcffff : reserved
5efd0000-5effffff : reserved
5f000000-5fffffff : reserved
where the "reserved" entries at the top level or under System RAM (and
its descendant resources) are ones of such kind and should not be regarded
as usable memory ranges where several free spaces for loading kexec data
will be allocated.
With this patch, get_memory_ranges() will handle this format of file
correctly. Note that, for safety, unknown regions, in addition to
"reserved" ones, will also be excluded.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Chester Lin <clin@suse.com>
---
kexec/arch/arm64/kexec-arm64.c | 146 ++++++++++++++++++++-------------
1 file changed, 87 insertions(+), 59 deletions(-)
diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
index 1cde75d1a771..2e923b54f5b1 100644
--- a/kexec/arch/arm64/kexec-arm64.c
+++ b/kexec/arch/arm64/kexec-arm64.c
@@ -10,7 +10,9 @@
#include <inttypes.h>
#include <libfdt.h>
#include <limits.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <sys/stat.h>
#include <linux/elf-em.h>
#include <elf.h>
@@ -29,6 +31,7 @@
#include "fs2dt.h"
#include "iomem.h"
#include "kexec-syscall.h"
+#include "mem_regions.h"
#include "arch/options.h"
#define ROOT_NODE_ADDR_CELLS_DEFAULT 1
@@ -899,19 +902,33 @@ int get_phys_base_from_pt_load(unsigned long *phys_offset)
return 0;
}
+static bool to_be_excluded(char *str)
+{
+ if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)) ||
+ !strncmp(str, KERNEL_CODE, strlen(KERNEL_CODE)) ||
+ !strncmp(str, KERNEL_DATA, strlen(KERNEL_DATA)) ||
+ !strncmp(str, CRASH_KERNEL, strlen(CRASH_KERNEL)))
+ return false;
+ else
+ return true;
+}
+
/**
- * get_memory_ranges_iomem_cb - Helper for get_memory_ranges_iomem.
+ * get_memory_ranges - Try to get the memory ranges from
+ * /proc/iomem.
*/
-
-static int get_memory_ranges_iomem_cb(void *data, int nr, char *str,
- unsigned long long base, unsigned long long length)
+int get_memory_ranges(struct memory_range **range, int *ranges,
+ unsigned long kexec_flags)
{
- int ret;
unsigned long phys_offset = UINT64_MAX;
- struct memory_range *r;
-
- if (nr >= KEXEC_SEGMENT_MAX)
- return -1;
+ FILE *fp;
+ const char *iomem = proc_iomem();
+ char line[MAX_LINE], *str;
+ unsigned long long start, end;
+ int n, consumed;
+ struct memory_ranges memranges;
+ struct memory_range *last, excl_range;
+ int ret;
if (!try_read_phys_offset_from_kcore) {
/* Since kernel version 4.19, 'kcore' contains
@@ -945,17 +962,65 @@ static int get_memory_ranges_iomem_cb(void *data, int nr, char *str,
try_read_phys_offset_from_kcore = true;
}
- r = (struct memory_range *)data + nr;
+ fp = fopen(iomem, "r");
+ if (!fp)
+ die("Cannot open %s\n", iomem);
+
+ memranges.ranges = NULL;
+ memranges.size = memranges.max_size = 0;
+
+ while (fgets(line, sizeof(line), fp) != 0) {
+ n = sscanf(line, "%llx-%llx : %n", &start, &end, &consumed);
+ if (n != 2)
+ continue;
+ str = line + consumed;
+
+ if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM))) {
+ ret = mem_regions_alloc_and_add(&memranges,
+ start, end - start + 1, RANGE_RAM);
+ if (ret) {
+ fprintf(stderr,
+ "Cannot allocate memory for ranges\n");
+ return -ENOMEM;
+ }
- if (!strncmp(str, SYSTEM_RAM, strlen(SYSTEM_RAM)))
- r->type = RANGE_RAM;
- else if (!strncmp(str, IOMEM_RESERVED, strlen(IOMEM_RESERVED)))
- r->type = RANGE_RESERVED;
- else
- return 1;
+ dbgprintf("%s:+[%d] %016llx - %016llx\n", __func__,
+ memranges.size - 1,
+ memranges.ranges[memranges.size - 1].start,
+ memranges.ranges[memranges.size - 1].end);
+ } else if (to_be_excluded(str)) {
+ if (!memranges.size)
+ continue;
+
+ /*
+ * Note: mem_regions_exclude() doesn't guarantee
+ * that the ranges are sorted out, but as long as
+ * we cope with /proc/iomem, we only operate on
+ * the last entry and so it is safe.
+ */
- r->start = base;
- r->end = base + length - 1;
+ /* The last System RAM range */
+ last = &memranges.ranges[memranges.size - 1];
+
+ if (last->end < start)
+ /* New resource outside of System RAM */
+ continue;
+ if (end < last->start)
+ /* Already excluded by parent resource */
+ continue;
+
+ excl_range.start = start;
+ excl_range.end = end;
+ mem_regions_alloc_and_exclude(&memranges, &excl_range);
+ dbgprintf("%s:- %016llx - %016llx\n",
+ __func__, start, end);
+ }
+ }
+
+ fclose(fp);
+
+ *range = memranges.ranges;
+ *ranges = memranges.size;
/* As a fallback option, we can try determining the PHYS_OFFSET
* value from the '/proc/iomem' entries as well.
@@ -976,52 +1041,15 @@ static int get_memory_ranges_iomem_cb(void *data, int nr, char *str,
* between the user-space and kernel space 'PHYS_OFFSET'
* value.
*/
- set_phys_offset(r->start, "iomem");
+ if (memranges.size)
+ set_phys_offset(memranges.ranges[0].start, "iomem");
- dbgprintf("%s: %016llx - %016llx : %s", __func__, r->start,
- r->end, str);
+ dbgprint_mem_range("System RAM ranges;",
+ memranges.ranges, memranges.size);
return 0;
}
-/**
- * get_memory_ranges_iomem - Try to get the memory ranges from
- * /proc/iomem.
- */
-
-static int get_memory_ranges_iomem(struct memory_range *array,
- unsigned int *count)
-{
- *count = kexec_iomem_for_each_line(NULL,
- get_memory_ranges_iomem_cb, array);
-
- if (!*count) {
- dbgprintf("%s: failed: No RAM found.\n", __func__);
- return EFAILED;
- }
-
- return 0;
-}
-
-/**
- * get_memory_ranges - Try to get the memory ranges some how.
- */
-
-int get_memory_ranges(struct memory_range **range, int *ranges,
- unsigned long kexec_flags)
-{
- static struct memory_range array[KEXEC_SEGMENT_MAX];
- unsigned int count;
- int result;
-
- result = get_memory_ranges_iomem(array, &count);
-
- *range = result ? NULL : array;
- *ranges = result ? 0 : count;
-
- return result;
-}
-
int arch_compat_trampoline(struct kexec_info *info)
{
return 0;

70
kexec-tools-build-multiboot2-for-i386.patch
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@ -1,70 +0,0 @@
From: Chris Packham <chris.packham@alliedtelesis.co.nz>
Date: Sun, 17 Nov 2019 15:52:15 -0800
Subject: kexec: build multiboot2 for i386
References: jsc#SLE-9943
Upstream: Queued, http://lists.infradead.org/pipermail/kexec/2020-January/024311.html
This addresses the following compilation issues when building for i386.
kexec/arch/i386/kexec-x86.c:39:22: error: 'multiboot2_x86_probe' undeclared here (not in a function); did you mean 'multiboot_x86_probe'?
{ "multiboot2-x86", multiboot2_x86_probe, multiboot2_x86_load,
^~~~~~~~~~~~~~~~~~~~
multiboot_x86_probe
kexec/arch/i386/kexec-x86.c:39:44: error: 'multiboot2_x86_load' undeclared here (not in a function); did you mean 'multiboot_x86_load'?
{ "multiboot2-x86", multiboot2_x86_probe, multiboot2_x86_load,
^~~~~~~~~~~~~~~~~~~
multiboot_x86_load
kexec/arch/i386/kexec-x86.c:40:4: error: 'multiboot2_x86_usage' undeclared here (not in a function); did you mean 'multiboot_x86_usage'?
multiboot2_x86_usage },
^~~~~~~~~~~~~~~~~~~~
multiboot_x86_usage
make: *** [Makefile:114: kexec/arch/i386/kexec-x86.o] Error 1
make: *** Waiting for unfinished jobs....
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Chester Lin <clin@suse.com>
---
I wasn't sure whether this should be fixed by linking with kexec-mb2-x86.o or
by removing the code from kexec-x86.c. I went for the former but I'd happily
change to the latter.
kexec/arch/i386/Makefile | 2 +-
kexec/arch/i386/kexec-x86.h | 5 +++++
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/kexec/arch/i386/Makefile b/kexec/arch/i386/Makefile
index 105cefd..f486103 100644
--- a/kexec/arch/i386/Makefile
+++ b/kexec/arch/i386/Makefile
@@ -7,6 +7,7 @@ i386_KEXEC_SRCS += kexec/arch/i386/kexec-elf-x86.c
i386_KEXEC_SRCS += kexec/arch/i386/kexec-elf-rel-x86.c
i386_KEXEC_SRCS += kexec/arch/i386/kexec-bzImage.c
i386_KEXEC_SRCS += kexec/arch/i386/kexec-multiboot-x86.c
+i386_KEXEC_SRCS += kexec/arch/i386/kexec-mb2-x86.c
i386_KEXEC_SRCS += kexec/arch/i386/kexec-beoboot-x86.c
i386_KEXEC_SRCS += kexec/arch/i386/kexec-nbi.c
i386_KEXEC_SRCS += kexec/arch/i386/x86-linux-setup.c
@@ -14,7 +15,6 @@ i386_KEXEC_SRCS += kexec/arch/i386/crashdump-x86.c
dist += kexec/arch/i386/Makefile $(i386_KEXEC_SRCS) \
kexec/arch/i386/crashdump-x86.h \
- kexec/arch/i386/kexec-mb2-x86.c \
kexec/arch/i386/kexec-x86.h \
kexec/arch/i386/x86-linux-setup.h \
kexec/arch/i386/include/arch/options.h
diff --git a/kexec/arch/i386/kexec-x86.h b/kexec/arch/i386/kexec-x86.h
index 1b58c3b..0f941df 100644
--- a/kexec/arch/i386/kexec-x86.h
+++ b/kexec/arch/i386/kexec-x86.h
@@ -60,6 +60,11 @@ int multiboot_x86_load(int argc, char **argv, const char *buf, off_t len,
struct kexec_info *info);
void multiboot_x86_usage(void);
+int multiboot2_x86_load(int argc, char **argv, const char *buf, off_t len,
+ struct kexec_info *info);
+void multiboot2_x86_usage(void);
+int multiboot2_x86_probe(const char *buf, off_t buf_len);
+
int elf_x86_probe(const char *buf, off_t len);
int elf_x86_load(int argc, char **argv, const char *buf, off_t len,
struct kexec_info *info);

231
kexec-tools-fix-kexec_file_load-error-handling.patch
View File

@ -1,231 +0,0 @@
From 0ec1fd23847ba103f967e3377e2a1b13712cff6e Mon Sep 17 00:00:00 2001
From: Petr Tesarik <ptesarik@suse.com>
Date: Thu, 12 Mar 2020 20:12:12 +0100
Subject: Fix kexec_file_load(2) error handling
References: bsc#1166105
Upstream: merged
Git-commit: 4f77da6340356de40af70473d3c3ae6ec663fbdf
The handling of kexec_file_load() error conditions needs some
improvement.
First, on failure, the system call itself returns -1 and sets
errno. It is wrong to check the return value itself.
Second, do_kexec_file_load() mixes different types of error
codes (-1, return value of a load method, negative kernel error
number). Let it always return one of the reason codes defined in
kexec/kexec.h.
Third, the caller of do_kexec_file_load() cannot know what exactly
failed inside that function, so it should not check errno directly.
All it needs to know is whether it makes sense to fall back to the
other syscall. Add an error code for that purpose (EFALLBACK), and
let do_kexec_file_load() decide.
Fourth, do_kexec_file_load() should not print any error message if
it returns EFALLBACK, because the fallback syscall may succeed
later, and the user is confused whether the command failed, or not.
Move the error message towards the end of main().
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
kexec/kexec.c | 114 ++++++++++++++++++++++++++++++----------------------------
kexec/kexec.h | 1 +
2 files changed, 61 insertions(+), 54 deletions(-)
diff --git a/kexec/kexec.c b/kexec/kexec.c
index bc6ab3d..33c1b4b 100644
--- a/kexec/kexec.c
+++ b/kexec/kexec.c
@@ -836,11 +836,21 @@ static int kexec_file_unload(unsigned long kexec_file_flags)
{
int ret = 0;
+ if (!is_kexec_file_load_implemented())
+ return EFALLBACK;
+
ret = kexec_file_load(-1, -1, 0, NULL, kexec_file_flags);
if (ret != 0) {
- /* The unload failed, print some debugging information */
- fprintf(stderr, "kexec_file_load(unload) failed\n: %s\n",
- strerror(errno));
+ if (errno == ENOSYS) {
+ ret = EFALLBACK;
+ } else {
+ /*
+ * The unload failed, print some debugging
+ * information */
+ fprintf(stderr, "kexec_file_load(unload) failed: %s\n",
+ strerror(errno));
+ ret = EFAILED;
+ }
}
return ret;
}
@@ -1182,15 +1192,13 @@ static int do_kexec_file_load(int fileind, int argc, char **argv,
info.file_mode = 1;
info.initrd_fd = -1;
- if (!is_kexec_file_load_implemented()) {
- fprintf(stderr, "syscall kexec_file_load not available.\n");
- return -ENOSYS;
- }
+ if (!is_kexec_file_load_implemented())
+ return EFALLBACK;
if (argc - fileind <= 0) {
fprintf(stderr, "No kernel specified\n");
usage();
- return -1;
+ return EFAILED;
}
kernel = argv[fileind];
@@ -1199,7 +1207,7 @@ static int do_kexec_file_load(int fileind, int argc, char **argv,
if (kernel_fd == -1) {
fprintf(stderr, "Failed to open file %s:%s\n", kernel,
strerror(errno));
- return -1;
+ return EFAILED;
}
/* slurp in the input kernel */
@@ -1225,7 +1233,7 @@ static int do_kexec_file_load(int fileind, int argc, char **argv,
if (i == file_types) {
fprintf(stderr, "Cannot determine the file type " "of %s\n",
kernel);
- return -1;
+ return EFAILED;
}
ret = file_type[i].load(argc, argv, kernel_buf, kernel_size, &info);
@@ -1243,9 +1251,43 @@ static int do_kexec_file_load(int fileind, int argc, char **argv,
ret = kexec_file_load(kernel_fd, info.initrd_fd, info.command_line_len,
info.command_line, info.kexec_flags);
- if (ret != 0)
- fprintf(stderr, "kexec_file_load failed: %s\n",
- strerror(errno));
+ if (ret != 0) {
+ switch (errno) {
+ /*
+ * Something failed with signature verification.
+ * Reject the image.
+ */
+ case ELIBBAD:
+ case EKEYREJECTED:
+ case ENOPKG:
+ case ENOKEY:
+ case EBADMSG:
+ case EMSGSIZE:
+ /* Reject by default. */
+ default:
+ ret = EFAILED;
+ break;
+
+ /* Not implemented. */
+ case ENOSYS:
+ /*
+ * Parsing image or other options failed
+ * The image may be invalid or image
+ * type may not supported by kernel so
+ * retry parsing in kexec-tools.
+ */
+ case EINVAL:
+ case ENOEXEC:
+ /*
+ * ENOTSUP can be unsupported image
+ * type or unsupported PE signature
+ * wrapper type, duh.
+ */
+ case ENOTSUP:
+ ret = EFALLBACK;
+ break;
+ }
+ }
close(kernel_fd);
return ret;
@@ -1496,7 +1538,7 @@ int main(int argc, char *argv[])
if (do_unload) {
if (do_kexec_file_syscall) {
result = kexec_file_unload(kexec_file_flags);
- if ((result == -ENOSYS) && do_kexec_fallback)
+ if (result == EFALLBACK && do_kexec_fallback)
do_kexec_file_syscall = 0;
}
if (!do_kexec_file_syscall)
@@ -1506,46 +1548,8 @@ int main(int argc, char *argv[])
if (do_kexec_file_syscall) {
result = do_kexec_file_load(fileind, argc, argv,
kexec_file_flags);
- if (do_kexec_fallback) switch (result) {
- /*
- * Something failed with signature verification.
- * Reject the image.
- */
- case -ELIBBAD:
- case -EKEYREJECTED:
- case -ENOPKG:
- case -ENOKEY:
- case -EBADMSG:
- case -EMSGSIZE:
- /*
- * By default reject or do nothing if
- * succeded
- */
- default: break;
- case -ENOSYS: /* not implemented */
- /*
- * Parsing image or other options failed
- * The image may be invalid or image
- * type may not supported by kernel so
- * retry parsing in kexec-tools.
- */
- case -EINVAL:
- case -ENOEXEC:
- /*
- * ENOTSUP can be unsupported image
- * type or unsupported PE signature
- * wrapper type, duh
- *
- * The kernel sometimes wrongly
- * returns ENOTSUPP (524) - ignore
- * that. It is not supposed to be seen
- * by userspace so seeing it is a
- * kernel bug
- */
- case -ENOTSUP:
- do_kexec_file_syscall = 0;
- break;
- }
+ if (result == EFALLBACK && do_kexec_fallback)
+ do_kexec_file_syscall = 0;
}
if (!do_kexec_file_syscall)
result = my_load(type, fileind, argc, argv,
@@ -1570,6 +1574,8 @@ int main(int argc, char *argv[])
if ((result == 0) && do_load_jump_back_helper) {
result = my_load_jump_back_helper(kexec_flags, entry);
}
+ if (result == EFALLBACK)
+ fputs("syscall kexec_file_load not available.\n", stderr);
fflush(stdout);
fflush(stderr);
diff --git a/kexec/kexec.h b/kexec/kexec.h
index a97b9ce..28fd129 100644
--- a/kexec/kexec.h
+++ b/kexec/kexec.h
@@ -63,6 +63,7 @@
*/
#define EFAILED -1 /* default error code */
#define ENOCRASHKERNEL -2 /* no memory reserved for crashkernel */
+#define EFALLBACK -3 /* fallback to kexec_load(2) may work */
/*
* This function doesn't actually exist. The idea is that when someone
--
2.16.4

22
kexec-tools-remove-duplicate-ramdisk-definition.patch Normal file
View File

@ -0,0 +1,22 @@
From: Petr Tesarik <ptesarik@suse.com>
Subject: Remove duplicate definition of ramdisk
Upstream: not yet, sent on 2021-04-26
The ramdisk variable is defined in kexec/arch/ppc/kexec-ppc.c. This
other definition is not needed and breaks build with -fno-common.
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
kexec/arch/ppc/kexec-elf-ppc.c | 1 -
1 file changed, 1 deletion(-)
--- a/kexec/arch/ppc/kexec-elf-ppc.c
+++ b/kexec/arch/ppc/kexec-elf-ppc.c
@@ -33,7 +33,6 @@
static const int probe_debug = 0;
unsigned char reuse_initrd;
-const char *ramdisk;
int create_flatten_tree(struct kexec_info *, unsigned char **, unsigned long *,
char *);

55
kexec-tools-reset-getopt-before-falling-back-to-legacy.patch
View File

@ -1,55 +0,0 @@
From dadafc4664c7b78ea1561ccca33986c9639106ec Mon Sep 17 00:00:00 2001
From: Petr Tesarik <ptesarik@suse.com>
Date: Fri, 13 Mar 2020 14:54:00 +0100
Subject: Reset getopt before falling back to legacy syscall
References: bsc#1166105
Upstream: merged
Git-commit: 9cf721279f6cb0dec09c8752e471f15fb662406b
The modules may need to parse the arguments again after
kexec_file_load(2) failed, but getopt is not reset.
This change fixes the --initrd option on s390x. Without this patch,
it will fail to load the initrd on kernels that do not implement
kexec_file_load(2).
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
kexec/kexec.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/kexec/kexec.c b/kexec/kexec.c
index 33c1b4b..6601f1f 100644
--- a/kexec/kexec.c
+++ b/kexec/kexec.c
@@ -1538,8 +1538,12 @@ int main(int argc, char *argv[])
if (do_unload) {
if (do_kexec_file_syscall) {
result = kexec_file_unload(kexec_file_flags);
- if (result == EFALLBACK && do_kexec_fallback)
+ if (result == EFALLBACK && do_kexec_fallback) {
+ /* Reset getopt for fallback */
+ opterr = 1;
+ optind = 1;
do_kexec_file_syscall = 0;
+ }
}
if (!do_kexec_file_syscall)
result = k_unload(kexec_flags);
@@ -1548,8 +1552,12 @@ int main(int argc, char *argv[])
if (do_kexec_file_syscall) {
result = do_kexec_file_load(fileind, argc, argv,
kexec_file_flags);
- if (result == EFALLBACK && do_kexec_fallback)
+ if (result == EFALLBACK && do_kexec_fallback) {
+ /* Reset getopt for fallback */
+ opterr = 1;
+ optind = 1;
do_kexec_file_syscall = 0;
+ }
}
if (!do_kexec_file_syscall)
result = my_load(type, fileind, argc, argv,
--
2.16.4

32
kexec-tools-s390-Reset-kernel-command-line-on-syscal.patch
View File

@ -1,32 +0,0 @@
From: Petr Tesarik <ptesarik@suse.com>
Date: Fri, 3 Apr 2020 13:12:00 +0200
Subject: kexec-tools: s390: Reset kernel command line on syscall fallback
References: bsc#1167868
Upstream: merged
Git-commit: 5dc72ded6050a5bb161e3b832867e660c9ca009e
The command line is duplicated on s390 if kexec_file_load(2) is not
implemented. That's because the corresponding variable is not reset
to an empty string before re-parsing the kexec command line.
Fixes: 9cf721279f6c ("Reset getopt before falling back to legacy syscall")
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
kexec/arch/s390/kexec-image.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kexec/arch/s390/kexec-image.c b/kexec/arch/s390/kexec-image.c
index 8b39566..3c24fdf 100644
--- a/kexec/arch/s390/kexec-image.c
+++ b/kexec/arch/s390/kexec-image.c
@@ -112,6 +112,7 @@ image_s390_load(int argc, char **argv, const char *kernel_buf,
};
static const char short_options[] = KEXEC_OPT_STR "";
+ command_line[0] = 0;
ramdisk = NULL;
ramdisk_len = 0;
ramdisk_origin = 0;
--
2.16.4

25
kexec-tools.changes
View File

@ -1,3 +1,28 @@
-------------------------------------------------------------------
Mon Apr 26 09:35:21 UTC 2021 - Petr Tesařík <ptesarik@suse.com>
- kexec-tools-remove-duplicate-ramdisk-definition.patch:
Remove duplicate definition of ramdisk (fix ppc build).
-------------------------------------------------------------------
Mon Apr 26 08:07:47 UTC 2021 - Petr Tesařík <ptesarik@suse.com>
- Bump version to 2.0.21
- Drop patches from upstream git:
* kexec-tools-add-variant-helper-functions.patch
* kexec-tools-arm64-kexec-allocate-memory-space-avoiding-reserved-regions.patch
* kexec-tools-arm64-kdump-deal-with-resource-entries-in-proc-iomem.patch
* kexec-tools-build-multiboot2-for-i386.patch
* kexec-tools-fix-kexec_file_load-error-handling.patch
* kexec-tools-reset-getopt-before-falling-back-to-legacy.patch
* kexec-tools-s390-Reset-kernel-command-line-on-syscal.patch
* kexec-tools-Remove-duplicated-variable-declarations.patch
-------------------------------------------------------------------
Tue Apr 20 12:01:43 UTC 2021 - Wolfgang Frisch <wolfgang.frisch@suse.com>
- Hardening: Link as PIE (bsc#1185020).
-------------------------------------------------------------------
Tue Nov 24 16:54:57 UTC 2020 - Ludwig Nussel <lnussel@suse.de>

31
kexec-tools.spec
View File

@ -1,7 +1,7 @@
#
# spec file for package kexec-tools
#
# Copyright (c) 2020 SUSE LLC
# Copyright (c) 2021 SUSE LLC
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -17,7 +17,7 @@
Name: kexec-tools
Version: 2.0.20
Version: 2.0.21
Release: 0
Summary: Tools for loading replacement kernels into memory
License: GPL-2.0-or-later
@ -29,16 +29,9 @@ Source3: kexec-load.service
Source4: %{name}-rpmlintrc
Patch3: %{name}-disable-test.patch
Patch4: %{name}-vmcoreinfo-in-xen.patch
Patch5: %{name}-add-variant-helper-functions.patch
Patch6: %{name}-arm64-kexec-allocate-memory-space-avoiding-reserved-regions.patch
Patch7: %{name}-arm64-kdump-deal-with-resource-entries-in-proc-iomem.patch
Patch8: %{name}-build-multiboot2-for-i386.patch
Patch9: %{name}-video-capability.patch
Patch10: %{name}-SYS_getrandom.patch
Patch11: %{name}-fix-kexec_file_load-error-handling.patch
Patch12: %{name}-reset-getopt-before-falling-back-to-legacy.patch
Patch13: %{name}-s390-Reset-kernel-command-line-on-syscal.patch
Patch14: %{name}-Remove-duplicated-variable-declarations.patch
Patch11: %{name}-remove-duplicate-ramdisk-definition.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: systemd-rpm-macros
@ -47,7 +40,7 @@ BuildRequires: zlib-devel
#!BuildIgnore: gcc-PIE
Requires: perl-Bootloader
Requires(post): suse-module-tools
Requires(postun): suse-module-tools
Requires(postun):suse-module-tools
%{?systemd_requires}
%ifarch x86_64
BuildRequires: pkgconfig
@ -62,23 +55,13 @@ the loaded kernel after it panics.
%prep
%setup -q
%patch3 -p1
%patch4 -p1
%patch5 -p1
%patch6 -p1
%patch7 -p1
%patch8 -p1
%patch9 -p1
%patch10 -p1
%patch11 -p1
%patch12 -p1
%patch13 -p1
%patch14 -p1
%autopatch -p1
%build
autoreconf -fvi
export CFLAGS="%{optflags}"
export CFLAGS="%{optflags} -fPIC"
export BUILD_CFLAGS="%{optflags}"
export LDFLAGS="-pie"
%configure
make %{?_smp_mflags}