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import crash-7.2.8-7.el8

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CentOS Sources 2020-11-03 07:07:52 -05:00
parent 145e277e6d
commit 17cf870a7d
12 changed files with 1499 additions and 2640 deletions
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3
.crash.metadata
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194a82c2cd9d45478559947fe767fd42be5a668f SOURCES/crash-7.2.7.tar.gz
334bce71a69ccf8abefaf8c4bc5eec67c9b43c9e SOURCES/crash-7.2.8.tar.gz
026f4c9e1c8152a2773354551c523acd32d7f00e SOURCES/gdb-7.6.tar.gz

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.gitignore vendored
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SOURCES/crash-7.2.7.tar.gz
SOURCES/crash-7.2.8.tar.gz
SOURCES/gdb-7.6.tar.gz

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commit 0f29a8ac6b731be5bb47cf70355dc99ba6284741
Author: Dave Anderson <anderson@redhat.com>
Date: Fri May 8 11:46:04 2020 -0400
Replace people.redhat.com references with github equivalents.
(anderson@redhat.com)
diff --git a/README b/README
index f401b0cf9f6b..bfbaef6d3b4b 100644
--- a/README
+++ b/README
@@ -32,7 +32,8 @@
A whitepaper with complete documentation concerning the use of this utility
can be found here:
- http://people.redhat.com/anderson/crash_whitepaper
+ https://crash-utility.github.io/crash_whitepaper.html
+
These are the current prerequisites:
diff --git a/configure.c b/configure.c
index 75006e881f5a..7f6d19e0b87e 100644
--- a/configure.c
+++ b/configure.c
@@ -1339,7 +1339,7 @@ make_spec_file(struct supported_gdb_version *sp)
printf("License: %s\n", sp->GPL);
printf("Group: Development/Debuggers\n");
printf("Source: %%{name}-%%{version}.tar.gz\n");
- printf("URL: http://people.redhat.com/anderson\n");
+ printf("URL: https://github.com/crash-utility\n");
printf("Distribution: Linux 2.2 or greater\n");
printf("Vendor: Red Hat, Inc.\n");
printf("Packager: Dave Anderson <anderson@redhat.com>\n");
diff --git a/crash.8 b/crash.8
index 994a2e05b8ab..136ae7859d99 100644
--- a/crash.8
+++ b/crash.8
@@ -867,7 +867,7 @@ command within
.B crash
provides more complete and accurate documentation than this man page.
.PP
-.I http://people.redhat.com/anderson
+.I https://github.com/crash-utility
- the home page of the
.B crash
utility.
diff --git a/help.c b/help.c
index bd2cca80e79a..6476e28d54f9 100644
--- a/help.c
+++ b/help.c
@@ -9357,7 +9357,7 @@ char *README[] = {
" A whitepaper with complete documentation concerning the use of this utility",
" can be found here:",
" ",
-" http://people.redhat.com/anderson/crash_whitepaper",
+" https://crash-utility.github.io/crash_whitepaper.html",
" ",
" These are the current prerequisites: ",
"",

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commit 1c45cea02df7f947b4296c1dcaefa1024235ef10
Author: Bhupesh Sharma <bhsharma@redhat.com>
Date: Tue Jul 14 01:14:49 2020 +0530
arm64: Change tcr_el1_t1sz variable name to TCR_EL1_T1SZ
Since linux kernel commit bbdbc11804ff ("arm64/crash_core: Export
TCR_EL1.T1SZ in vmcoreinfo") [available in linux-next now], the name
of tcr_el1_t1sz vmcoreinfo variable has been changed to TCR_EL1_T1SZ.
Make a similar change in crash-utility.
Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com>
diff --git a/arm64.c b/arm64.c
index 653225cd8cd6..fdf77bd5e0c1 100644
--- a/arm64.c
+++ b/arm64.c
@@ -3922,7 +3922,7 @@ arm64_calc_VA_BITS(void)
} else if (ACTIVE())
error(FATAL, "cannot determine VA_BITS_ACTUAL: please use /proc/kcore\n");
else {
- if ((string = pc->read_vmcoreinfo("NUMBER(tcr_el1_t1sz)"))) {
+ if ((string = pc->read_vmcoreinfo("NUMBER(TCR_EL1_T1SZ)"))) {
/* See ARMv8 ARM for the description of
* TCR_EL1.T1SZ and how it can be used
* to calculate the vabits_actual
diff --git a/netdump.c b/netdump.c
index 406416af36bf..0054d6ab35b4 100644
--- a/netdump.c
+++ b/netdump.c
@@ -1887,7 +1887,7 @@ vmcoreinfo_read_string(const char *key)
sprintf(value, "%ld", nd->arch_data2 & 0xffffffff);
return value;
}
- if (STREQ(key, "NUMBER(tcr_el1_t1sz)") && nd->arch_data2) {
+ if (STREQ(key, "NUMBER(TCR_EL1_T1SZ)") && nd->arch_data2) {
value = calloc(VADDR_PRLEN+1, sizeof(char));
sprintf(value, "%lld", ((ulonglong)nd->arch_data2 >> 32) & 0xffffffff);
pc->read_vmcoreinfo = no_vmcoreinfo;

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commit 9596b4388ea5ebbf7de79f0e377a497de1616654
Author: Bhupesh Sharma <bhsharma@redhat.com>
Date: Thu Aug 6 13:17:26 2020 +0530
crash/arm64: Revert to implementation used in crash-7.2.3-17.el8 [Support for CONFIG_ARM64_USER_VA_BITS_52 and CONFIG_ARM64_PA_BITS=52]
Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com>
diff --git a/arm64.c b/arm64.c
index 49e25733f094..dfcde6e11359 100644
--- a/arm64.c
+++ b/arm64.c
@@ -27,12 +27,9 @@
static struct machine_specific arm64_machine_specific = { 0 };
static int arm64_verify_symbol(const char *, ulong, char);
static void arm64_parse_cmdline_args(void);
-static int arm64_search_for_kimage_voffset(ulong);
-static int verify_kimage_voffset(void);
static void arm64_calc_kimage_voffset(void);
static void arm64_calc_phys_offset(void);
static void arm64_calc_virtual_memory_ranges(void);
-static void arm64_get_section_size_bits(void);
static int arm64_kdump_phys_base(ulong *);
static ulong arm64_processor_speed(void);
static void arm64_init_kernel_pgd(void);
@@ -81,7 +78,7 @@ static int arm64_on_irq_stack(int, ulong);
static void arm64_set_irq_stack(struct bt_info *);
static void arm64_set_process_stack(struct bt_info *);
static int arm64_get_kvaddr_ranges(struct vaddr_range *);
-static void arm64_get_crash_notes(void);
+static int arm64_get_crash_notes(void);
static void arm64_calc_VA_BITS(void);
static int arm64_is_uvaddr(ulong, struct task_context *);
@@ -147,12 +144,6 @@ arm64_init(int when)
if (kernel_symbol_exists("kimage_voffset"))
machdep->flags |= NEW_VMEMMAP;
- if (!machdep->pagesize &&
- (string = pc->read_vmcoreinfo("PAGESIZE"))) {
- machdep->pagesize = atoi(string);
- free(string);
- }
-
if (!machdep->pagesize) {
/*
* Kerneldoc Documentation/arm64/booting.txt describes
@@ -179,16 +170,17 @@ arm64_init(int when)
}
- /*
- * This code section will only be executed if the kernel is
- * earlier than Linux 4.4 (if there is no vmcoreinfo)
- */
if (!machdep->pagesize &&
kernel_symbol_exists("swapper_pg_dir") &&
kernel_symbol_exists("idmap_pg_dir")) {
- value = symbol_value("swapper_pg_dir") -
- symbol_value("idmap_pg_dir");
+ if (kernel_symbol_exists("tramp_pg_dir"))
+ value = symbol_value("tramp_pg_dir");
+ else if (kernel_symbol_exists("reserved_ttbr0"))
+ value = symbol_value("reserved_ttbr0");
+ else
+ value = symbol_value("swapper_pg_dir");
+ value -= symbol_value("idmap_pg_dir");
/*
* idmap_pg_dir is 2 pages prior to 4.1,
* and 3 pages thereafter. Only 4K and 64K
@@ -214,19 +206,12 @@ arm64_init(int when)
arm64_calc_VA_BITS();
ms = machdep->machspec;
- if (ms->VA_BITS_ACTUAL) {
- ms->page_offset = ARM64_PAGE_OFFSET_ACTUAL;
- machdep->identity_map_base = ARM64_PAGE_OFFSET_ACTUAL;
- machdep->kvbase = ARM64_PAGE_OFFSET_ACTUAL;
- ms->userspace_top = ARM64_USERSPACE_TOP_ACTUAL;
- } else {
- ms->page_offset = ARM64_PAGE_OFFSET;
- machdep->identity_map_base = ARM64_PAGE_OFFSET;
- machdep->kvbase = ARM64_VA_START;
- ms->userspace_top = ARM64_USERSPACE_TOP;
- }
+ ms->page_offset = ARM64_PAGE_OFFSET;
+ machdep->identity_map_base = ARM64_PAGE_OFFSET;
+ machdep->kvbase = ARM64_VA_START;
machdep->is_kvaddr = generic_is_kvaddr;
machdep->kvtop = arm64_kvtop;
+ ms->userspace_top = ARM64_USERSPACE_TOP;
if (machdep->flags & NEW_VMEMMAP) {
struct syment *sp;
@@ -235,15 +220,11 @@ arm64_init(int when)
sp = kernel_symbol_search("_end");
ms->kimage_end = (sp ? sp->value : 0);
- if (ms->VA_BITS_ACTUAL) {
- ms->modules_vaddr = (st->_stext_vmlinux & TEXT_OFFSET_MASK) - ARM64_MODULES_VSIZE;
- ms->modules_end = ms->modules_vaddr + ARM64_MODULES_VSIZE -1;
- } else {
- ms->modules_vaddr = ARM64_VA_START;
- if (kernel_symbol_exists("kasan_init"))
- ms->modules_vaddr += ARM64_KASAN_SHADOW_SIZE;
- ms->modules_end = ms->modules_vaddr + ARM64_MODULES_VSIZE -1;
- }
+ ms->modules_vaddr = ARM64_VA_START;
+ if (kernel_symbol_exists("kasan_init"))
+ ms->modules_vaddr += ARM64_KASAN_SHADOW_SIZE;
+ ms->modules_end = ms->modules_vaddr
+ + ARM64_MODULES_VSIZE -1;
ms->vmalloc_start_addr = ms->modules_end + 1;
@@ -285,7 +266,7 @@ arm64_init(int when)
case 65536:
if (kernel_symbol_exists("idmap_ptrs_per_pgd") &&
readmem(symbol_value("idmap_ptrs_per_pgd"), KVADDR,
- &value, sizeof(ulong), "idmap_ptrs_per_pgd", QUIET|RETURN_ON_ERROR))
+ &value, sizeof(ulong), "idmap_ptrs_per_pgd", RETURN_ON_ERROR))
machdep->ptrs_per_pgd = value;
if (machdep->machspec->VA_BITS > PGDIR_SHIFT_L3_64K) {
@@ -335,6 +316,10 @@ arm64_init(int when)
machdep->uvtop = arm64_uvtop;
machdep->is_uvaddr = arm64_is_uvaddr;
+ if (kernel_symbol_exists("vabits_user") &&
+ readmem(symbol_value("vabits_user"), KVADDR,
+ &value, sizeof(ulong), "vabits_user", RETURN_ON_ERROR))
+ machdep->machspec->vabits_user = value;
machdep->eframe_search = arm64_eframe_search;
machdep->back_trace = arm64_back_trace_cmd;
machdep->in_alternate_stack = arm64_in_alternate_stack;
@@ -375,8 +360,7 @@ arm64_init(int when)
case POST_GDB:
arm64_calc_virtual_memory_ranges();
- arm64_get_section_size_bits();
-
+ machdep->section_size_bits = _SECTION_SIZE_BITS;
if (!machdep->max_physmem_bits) {
if ((string = pc->read_vmcoreinfo("NUMBER(MAX_PHYSMEM_BITS)"))) {
machdep->max_physmem_bits = atol(string);
@@ -388,24 +372,8 @@ arm64_init(int when)
else
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
}
-
ms = machdep->machspec;
- if (CRASHDEBUG(1)) {
- if (ms->VA_BITS_ACTUAL) {
- fprintf(fp, "CONFIG_ARM64_VA_BITS: %ld\n", ms->CONFIG_ARM64_VA_BITS);
- fprintf(fp, " VA_BITS_ACTUAL: %ld\n", ms->VA_BITS_ACTUAL);
- fprintf(fp, "(calculated) VA_BITS: %ld\n", ms->VA_BITS);
- fprintf(fp, " PAGE_OFFSET: %lx\n", ARM64_PAGE_OFFSET_ACTUAL);
- fprintf(fp, " VA_START: %lx\n", ms->VA_START);
- fprintf(fp, " modules: %lx - %lx\n", ms->modules_vaddr, ms->modules_end);
- fprintf(fp, " vmalloc: %lx - %lx\n", ms->vmalloc_start_addr, ms->vmalloc_end);
- fprintf(fp, "kernel image: %lx - %lx\n", ms->kimage_text, ms->kimage_end);
- fprintf(fp, " vmemmap: %lx - %lx\n\n", ms->vmemmap_vaddr, ms->vmemmap_end);
- }
- }
-
-
if (THIS_KERNEL_VERSION >= LINUX(4,0,0)) {
ms->__SWP_TYPE_BITS = 6;
ms->__SWP_TYPE_SHIFT = 2;
@@ -465,8 +433,11 @@ arm64_init(int when)
* of the crash. We need this information to extract correct
* backtraces from the panic task.
*/
- if (!LIVE())
- arm64_get_crash_notes();
+ if (!LIVE() && !arm64_get_crash_notes())
+ error(WARNING,
+ "cannot retrieve registers for active task%s\n\n",
+ kt->cpus > 1 ? "s" : "");
+
break;
case LOG_ONLY:
@@ -648,15 +619,9 @@ arm64_dump_machdep_table(ulong arg)
fprintf(fp, " machspec: %lx\n", (ulong)ms);
fprintf(fp, " VA_BITS: %ld\n", ms->VA_BITS);
- fprintf(fp, " CONFIG_ARM64_VA_BITS: %ld\n", ms->CONFIG_ARM64_VA_BITS);
- fprintf(fp, " VA_START: ");
- if (ms->VA_START)
- fprintf(fp, "%lx\n", ms->VA_START);
- else
- fprintf(fp, "(unused)\n");
- fprintf(fp, " VA_BITS_ACTUAL: ");
- if (ms->VA_BITS_ACTUAL)
- fprintf(fp, "%ld\n", ms->VA_BITS_ACTUAL);
+ fprintf(fp, " vabits_user: ");
+ if (ms->vabits_user)
+ fprintf(fp, "%ld\n", ms->vabits_user);
else
fprintf(fp, "(unused)\n");
fprintf(fp, " userspace_top: %016lx\n", ms->userspace_top);
@@ -745,12 +710,12 @@ arm64_parse_machdep_arg_l(char *argstring, char *param, ulong *value)
int flags = RETURN_ON_ERROR | QUIET;
int err = 0;
- if (STRNEQ(argstring, "max_physmem_bits")) {
- *value = dtol(p, flags, &err);
- } else if (megabytes) {
+ if (megabytes) {
*value = dtol(p, flags, &err);
if (!err)
*value = MEGABYTES(*value);
+ } else if (STRNEQ(argstring, "max_physmem_bits")) {
+ *value = dtol(p, flags, &err);
} else {
*value = htol(p, flags, &err);
}
@@ -824,60 +789,11 @@ arm64_parse_cmdline_args(void)
}
}
-#define MIN_KIMG_ALIGN (0x00200000) /* kimage load address must be aligned 2M */
-/*
- * Traverse the entire dumpfile to find/verify kimage_voffset.
- */
-static int
-arm64_search_for_kimage_voffset(ulong phys_base)
-{
- ulong kimage_load_addr;
- ulong phys_end;
- struct machine_specific *ms = machdep->machspec;
-
- if (!arm_kdump_phys_end(&phys_end))
- return FALSE;
-
- for (kimage_load_addr = phys_base;
- kimage_load_addr <= phys_end; kimage_load_addr += MIN_KIMG_ALIGN) {
- ms->kimage_voffset = ms->vmalloc_start_addr - kimage_load_addr;
-
- if ((kt->flags2 & KASLR) && (kt->flags & RELOC_SET))
- ms->kimage_voffset += (kt->relocate * - 1);
-
- if (verify_kimage_voffset()) {
- if (CRASHDEBUG(1))
- error(INFO,
- "dumpfile searched for kimage_voffset: %lx\n\n",
- ms->kimage_voffset);
- break;
- }
- }
-
- if (kimage_load_addr > phys_end)
- return FALSE;
-
- return TRUE;
-}
-
-static int
-verify_kimage_voffset(void)
-{
- ulong kimage_voffset;
-
- if (!readmem(symbol_value("kimage_voffset"), KVADDR, &kimage_voffset,
- sizeof(kimage_voffset), "verify kimage_voffset", QUIET|RETURN_ON_ERROR))
- return FALSE;
-
- return (machdep->machspec->kimage_voffset == kimage_voffset);
-}
-
static void
arm64_calc_kimage_voffset(void)
{
struct machine_specific *ms = machdep->machspec;
- ulong phys_addr = 0;
- int errflag;
+ ulong phys_addr;
if (ms->kimage_voffset) /* vmcoreinfo, ioctl, or --machdep override */
return;
@@ -885,6 +801,7 @@ arm64_calc_kimage_voffset(void)
if (ACTIVE()) {
char buf[BUFSIZE];
char *p1;
+ int errflag;
FILE *iomem;
ulong kimage_voffset, vaddr;
@@ -925,24 +842,9 @@ arm64_calc_kimage_voffset(void)
if (errflag)
return;
- } else if (KDUMP_DUMPFILE()) {
- errflag = 1;
- if (arm_kdump_phys_base(&phys_addr)) { /* Get start address of first memory block */
- ms->kimage_voffset = ms->vmalloc_start_addr - phys_addr;
- if ((kt->flags2 & KASLR) && (kt->flags & RELOC_SET))
- ms->kimage_voffset += (kt->relocate * -1);
- if (verify_kimage_voffset() || arm64_search_for_kimage_voffset(phys_addr))
- errflag = 0;
- }
-
- if (errflag) {
- error(WARNING,
- "kimage_voffset cannot be determined from the dumpfile.\n");
- error(CONT,
- "Try using the command line option: --machdep kimage_voffset=<addr>\n");
- }
- return;
- } else {
+ } else if (KDUMP_DUMPFILE())
+ arm_kdump_phys_base(&phys_addr); /* Get start address of first memory block */
+ else {
error(WARNING,
"kimage_voffset cannot be determined from the dumpfile.\n");
error(CONT,
@@ -981,16 +883,10 @@ arm64_calc_phys_offset(void)
physaddr_t paddr;
ulong vaddr;
struct syment *sp;
- char *string;
if ((machdep->flags & NEW_VMEMMAP) &&
ms->kimage_voffset && (sp = kernel_symbol_search("memstart_addr"))) {
if (pc->flags & PROC_KCORE) {
- if ((string = pc->read_vmcoreinfo("NUMBER(PHYS_OFFSET)"))) {
- ms->phys_offset = htol(string, QUIET, NULL);
- free(string);
- return;
- }
vaddr = symbol_value_from_proc_kallsyms("memstart_addr");
if (vaddr == BADVAL)
vaddr = sp->value;
@@ -1053,31 +949,6 @@ arm64_calc_phys_offset(void)
fprintf(fp, "using %lx as phys_offset\n", ms->phys_offset);
}
-/*
- * Determine SECTION_SIZE_BITS either by reading VMCOREINFO or the kernel
- * config, otherwise use the 64-bit ARM default definiton.
- */
-static void
-arm64_get_section_size_bits(void)
-{
- int ret;
- char *string;
-
- machdep->section_size_bits = _SECTION_SIZE_BITS;
-
- if ((string = pc->read_vmcoreinfo("NUMBER(SECTION_SIZE_BITS)"))) {
- machdep->section_size_bits = atol(string);
- free(string);
- } else if (kt->ikconfig_flags & IKCONFIG_AVAIL) {
- if ((ret = get_kernel_config("CONFIG_MEMORY_HOTPLUG", NULL)) == IKCONFIG_Y) {
- if ((ret = get_kernel_config("CONFIG_HOTPLUG_SIZE_BITS", &string)) == IKCONFIG_STR)
- machdep->section_size_bits = atol(string);
- }
- }
-
- if (CRASHDEBUG(1))
- fprintf(fp, "SECTION_SIZE_BITS: %ld\n", machdep->section_size_bits);
-}
/*
* Determine PHYS_OFFSET either by reading VMCOREINFO or the kernel
@@ -1133,12 +1004,6 @@ ulong
arm64_VTOP(ulong addr)
{
if (machdep->flags & NEW_VMEMMAP) {
- if (machdep->machspec->VA_START &&
- (addr >= machdep->machspec->kimage_text) &&
- (addr <= machdep->machspec->kimage_end)) {
- return addr - machdep->machspec->kimage_voffset;
- }
-
if (addr >= machdep->machspec->page_offset)
return machdep->machspec->phys_offset
+ (addr - machdep->machspec->page_offset);
@@ -1215,11 +1080,6 @@ arm64_uvtop(struct task_context *tc, ulong uvaddr, physaddr_t *paddr, int verbos
}
}
-#define PTE_ADDR_LOW ((((1UL) << (48 - machdep->pageshift)) - 1) << machdep->pageshift)
-#define PTE_ADDR_HIGH ((0xfUL) << 12)
-#define PTE_TO_PHYS(pteval) (machdep->max_physmem_bits == 52 ? \
- (((pteval & PTE_ADDR_LOW) | ((pteval & PTE_ADDR_HIGH) << 36))) : (pteval & PTE_ADDR_LOW))
-
#define PMD_TYPE_MASK 3
#define PMD_TYPE_SECT 1
#define PMD_TYPE_TABLE 2
@@ -1312,7 +1172,7 @@ arm64_vtop_3level_64k(ulong pgd, ulong vaddr, physaddr_t *paddr, int verbose)
* #define __PAGETABLE_PUD_FOLDED
*/
- pmd_base = (ulong *)PTOV(PTE_TO_PHYS(pgd_val));
+ pmd_base = (ulong *)PTOV(pgd_val & PHYS_MASK & (s32)machdep->pagemask);
FILL_PMD(pmd_base, KVADDR, PTRS_PER_PMD_L3_64K * sizeof(ulong));
pmd_ptr = pmd_base + (((vaddr) >> PMD_SHIFT_L3_64K) & (PTRS_PER_PMD_L3_64K - 1));
pmd_val = ULONG(machdep->pmd + PAGEOFFSET(pmd_ptr));
@@ -1322,7 +1182,7 @@ arm64_vtop_3level_64k(ulong pgd, ulong vaddr, physaddr_t *paddr, int verbose)
goto no_page;
if ((pmd_val & PMD_TYPE_MASK) == PMD_TYPE_SECT) {
- ulong sectionbase = PTE_TO_PHYS(pmd_val) & SECTION_PAGE_MASK_512MB;
+ ulong sectionbase = (pmd_val & SECTION_PAGE_MASK_512MB) & PHYS_MASK;
if (verbose) {
fprintf(fp, " PAGE: %lx (512MB)\n\n", sectionbase);
arm64_translate_pte(pmd_val, 0, 0);
@@ -1331,7 +1191,7 @@ arm64_vtop_3level_64k(ulong pgd, ulong vaddr, physaddr_t *paddr, int verbose)
return TRUE;
}
- pte_base = (ulong *)PTOV(PTE_TO_PHYS(pmd_val));
+ pte_base = (ulong *)PTOV(pmd_val & PHYS_MASK & (s32)machdep->pagemask);
FILL_PTBL(pte_base, KVADDR, PTRS_PER_PTE_L3_64K * sizeof(ulong));
pte_ptr = pte_base + (((vaddr) >> machdep->pageshift) & (PTRS_PER_PTE_L3_64K - 1));
pte_val = ULONG(machdep->ptbl + PAGEOFFSET(pte_ptr));
@@ -1341,7 +1201,7 @@ arm64_vtop_3level_64k(ulong pgd, ulong vaddr, physaddr_t *paddr, int verbose)
goto no_page;
if (pte_val & PTE_VALID) {
- *paddr = PTE_TO_PHYS(pte_val) + PAGEOFFSET(vaddr);
+ *paddr = (PAGEBASE(pte_val) & PHYS_MASK) + PAGEOFFSET(vaddr);
if (verbose) {
fprintf(fp, " PAGE: %lx\n\n", PAGEBASE(*paddr));
arm64_translate_pte(pte_val, 0, 0);
@@ -1644,11 +1504,10 @@ arm64_stackframe_init(void)
machdep->machspec->kern_eframe_offset = SIZE(pt_regs);
}
- if ((sp1 = kernel_symbol_search("__exception_text_start")) &&
- (sp2 = kernel_symbol_search("__exception_text_end"))) {
- machdep->machspec->__exception_text_start = sp1->value;
- machdep->machspec->__exception_text_end = sp2->value;
- }
+ machdep->machspec->__exception_text_start =
+ symbol_value("__exception_text_start");
+ machdep->machspec->__exception_text_end =
+ symbol_value("__exception_text_end");
if ((sp1 = kernel_symbol_search("__irqentry_text_start")) &&
(sp2 = kernel_symbol_search("__irqentry_text_end"))) {
machdep->machspec->__irqentry_text_start = sp1->value;
@@ -1857,38 +1716,20 @@ arm64_eframe_search(struct bt_info *bt)
return count;
}
-static char *arm64_exception_functions[] = {
- "do_undefinstr",
- "do_sysinstr",
- "do_debug_exception",
- "do_mem_abort",
- "do_el0_irq_bp_hardening",
- "do_sp_pc_abort",
- NULL
-};
-
static int
arm64_in_exception_text(ulong ptr)
{
struct machine_specific *ms = machdep->machspec;
- char *name, **func;
+
+ if ((ptr >= ms->__exception_text_start) &&
+ (ptr < ms->__exception_text_end))
+ return TRUE;
if (ms->__irqentry_text_start && ms->__irqentry_text_end &&
((ptr >= ms->__irqentry_text_start) &&
(ptr < ms->__irqentry_text_end)))
return TRUE;
- if (ms->__exception_text_start && ms->__exception_text_end) {
- if ((ptr >= ms->__exception_text_start) &&
- (ptr < ms->__exception_text_end))
- return TRUE;
- } else if ((name = closest_symbol(ptr))) { /* Linux 5.5 and later */
- for (func = &arm64_exception_functions[0]; *func; func++) {
- if (STREQ(name, *func))
- return TRUE;
- }
- }
-
return FALSE;
}
@@ -3297,7 +3138,7 @@ arm64_translate_pte(ulong pte, void *physaddr, ulonglong unused)
char *arglist[MAXARGS];
int page_present;
- paddr = PTE_TO_PHYS(pte);
+ paddr = pte & PHYS_MASK & (s32)machdep->pagemask;
page_present = pte & (PTE_VALID | machdep->machspec->PTE_PROT_NONE);
if (physaddr) {
@@ -3563,8 +3404,8 @@ arm64_display_machine_stats(void)
fprintf(fp, " HZ: %d\n", machdep->hz);
fprintf(fp, " PAGE SIZE: %d\n", PAGESIZE());
fprintf(fp, "KERNEL VIRTUAL BASE: %lx\n", machdep->machspec->page_offset);
- fprintf(fp, "KERNEL MODULES BASE: %lx\n", machdep->machspec->modules_vaddr);
fprintf(fp, "KERNEL VMALLOC BASE: %lx\n", machdep->machspec->vmalloc_start_addr);
+ fprintf(fp, "KERNEL MODULES BASE: %lx\n", machdep->machspec->modules_vaddr);
fprintf(fp, "KERNEL VMEMMAP BASE: %lx\n", machdep->machspec->vmemmap_vaddr);
fprintf(fp, " KERNEL STACK SIZE: %ld\n", STACKSIZE());
if (machdep->machspec->irq_stack_size) {
@@ -3594,7 +3435,7 @@ arm64_get_smp_cpus(void)
/*
* Retrieve task registers for the time of the crash.
*/
-static void
+static int
arm64_get_crash_notes(void)
{
struct machine_specific *ms = machdep->machspec;
@@ -3603,10 +3444,10 @@ arm64_get_crash_notes(void)
ulong offset;
char *buf, *p;
ulong *notes_ptrs;
- ulong i, found;
+ ulong i;
if (!symbol_exists("crash_notes"))
- return;
+ return FALSE;
crash_notes = symbol_value("crash_notes");
@@ -3618,9 +3459,9 @@ arm64_get_crash_notes(void)
*/
if (!readmem(crash_notes, KVADDR, &notes_ptrs[kt->cpus-1],
sizeof(notes_ptrs[kt->cpus-1]), "crash_notes", RETURN_ON_ERROR)) {
- error(WARNING, "cannot read \"crash_notes\"\n");
+ error(WARNING, "cannot read crash_notes\n");
FREEBUF(notes_ptrs);
- return;
+ return FALSE;
}
if (symbol_exists("__per_cpu_offset")) {
@@ -3636,11 +3477,12 @@ arm64_get_crash_notes(void)
if (!(ms->panic_task_regs = calloc((size_t)kt->cpus, sizeof(struct arm64_pt_regs))))
error(FATAL, "cannot calloc panic_task_regs space\n");
- for (i = found = 0; i < kt->cpus; i++) {
+ for (i = 0; i < kt->cpus; i++) {
+
if (!readmem(notes_ptrs[i], KVADDR, buf, SIZE(note_buf),
"note_buf_t", RETURN_ON_ERROR)) {
- error(WARNING, "cpu %d: cannot read NT_PRSTATUS note\n", i);
- continue;
+ error(WARNING, "failed to read note_buf_t\n");
+ goto fail;
}
/*
@@ -3670,24 +3512,19 @@ arm64_get_crash_notes(void)
note->n_descsz == notesz)
BCOPY((char *)note, buf, notesz);
} else {
- error(WARNING, "cpu %d: cannot find NT_PRSTATUS note\n", i);
+ error(WARNING,
+ "cannot find NT_PRSTATUS note for cpu: %d\n", i);
continue;
}
}
- /*
- * Check the sanity of NT_PRSTATUS note only for each online cpu.
- * If this cpu has invalid note, continue to find the crash notes
- * for other online cpus.
- */
if (note->n_type != NT_PRSTATUS) {
- error(WARNING, "cpu %d: invalid NT_PRSTATUS note (n_type != NT_PRSTATUS)\n", i);
- continue;
+ error(WARNING, "invalid note (n_type != NT_PRSTATUS)\n");
+ goto fail;
}
-
- if (!STRNEQ(p, "CORE")) {
- error(WARNING, "cpu %d: invalid NT_PRSTATUS note (name != \"CORE\")\n", i);
- continue;
+ if (p[0] != 'C' || p[1] != 'O' || p[2] != 'R' || p[3] != 'E') {
+ error(WARNING, "invalid note (name != \"CORE\"\n");
+ goto fail;
}
/*
@@ -3700,17 +3537,18 @@ arm64_get_crash_notes(void)
BCOPY(p + OFFSET(elf_prstatus_pr_reg), &ms->panic_task_regs[i],
sizeof(struct arm64_pt_regs));
-
- found++;
}
FREEBUF(buf);
FREEBUF(notes_ptrs);
+ return TRUE;
- if (!found) {
- free(ms->panic_task_regs);
- ms->panic_task_regs = NULL;
- }
+fail:
+ FREEBUF(buf);
+ FREEBUF(notes_ptrs);
+ free(ms->panic_task_regs);
+ ms->panic_task_regs = NULL;
+ return FALSE;
}
static void
@@ -3834,9 +3672,6 @@ arm64_IS_VMALLOC_ADDR(ulong vaddr)
(vaddr <= machdep->machspec->kimage_end))
return FALSE;
- if (ms->VA_START && (vaddr >= ms->VA_START))
- return TRUE;
-
return ((vaddr >= ms->vmalloc_start_addr && vaddr <= ms->vmalloc_end) ||
((machdep->flags & VMEMMAP) &&
(vaddr >= ms->vmemmap_vaddr && vaddr <= ms->vmemmap_end)) ||
@@ -3848,54 +3683,9 @@ arm64_calc_VA_BITS(void)
{
int bitval;
struct syment *sp;
- ulong vabits_actual, value;
+ ulong value;
char *string;
- if ((string = pc->read_vmcoreinfo("NUMBER(VA_BITS)"))) {
- value = atol(string);
- free(string);
- machdep->machspec->CONFIG_ARM64_VA_BITS = value;
- }
-
- if (kernel_symbol_exists("vabits_actual")) {
- if (pc->flags & PROC_KCORE) {
- vabits_actual = symbol_value_from_proc_kallsyms("vabits_actual");
- if ((vabits_actual != BADVAL) && (READMEM(pc->mfd, &value, sizeof(ulong),
- vabits_actual, KCORE_USE_VADDR) > 0)) {
- if (CRASHDEBUG(1))
- fprintf(fp,
- "/proc/kcore: vabits_actual: %ld\n", value);
- machdep->machspec->VA_BITS_ACTUAL = value;
- machdep->machspec->VA_BITS = value;
- machdep->machspec->VA_START = _VA_START(machdep->machspec->VA_BITS_ACTUAL);
- } else
- error(FATAL, "/proc/kcore: cannot read vabits_actual\n");
- } else if (ACTIVE())
- error(FATAL, "cannot determine VA_BITS_ACTUAL: please use /proc/kcore\n");
- else {
- if ((string = pc->read_vmcoreinfo("NUMBER(TCR_EL1_T1SZ)"))) {
- /* See ARMv8 ARM for the description of
- * TCR_EL1.T1SZ and how it can be used
- * to calculate the vabits_actual
- * supported by underlying kernel.
- *
- * Basically:
- * vabits_actual = 64 - T1SZ;
- */
- value = 64 - strtoll(string, NULL, 0);
- if (CRASHDEBUG(1))
- fprintf(fp, "vmcoreinfo : vabits_actual: %ld\n", value);
- free(string);
- machdep->machspec->VA_BITS_ACTUAL = value;
- machdep->machspec->VA_BITS = value;
- machdep->machspec->VA_START = _VA_START(machdep->machspec->VA_BITS_ACTUAL);
- } else
- error(FATAL, "cannot determine VA_BITS_ACTUAL\n");
- }
-
- return;
- }
-
if (!(sp = symbol_search("swapper_pg_dir")) &&
!(sp = symbol_search("idmap_pg_dir")) &&
!(sp = symbol_search("_text")) &&
@@ -3924,12 +3714,14 @@ arm64_calc_VA_BITS(void)
/*
* Verify against dumpfiles that export VA_BITS in vmcoreinfo
*/
- if (machdep->machspec->CONFIG_ARM64_VA_BITS &&
- (machdep->machspec->VA_BITS != machdep->machspec->CONFIG_ARM64_VA_BITS)) {
- error(WARNING, "VA_BITS: calculated: %ld vmcoreinfo: %ld\n",
- machdep->machspec->VA_BITS, machdep->machspec->CONFIG_ARM64_VA_BITS);
- machdep->machspec->VA_BITS = machdep->machspec->CONFIG_ARM64_VA_BITS;
- }
+ if ((string = pc->read_vmcoreinfo("NUMBER(VA_BITS)"))) {
+ value = atol(string);
+ free(string);
+ if (machdep->machspec->VA_BITS != value)
+ error(WARNING, "VA_BITS: calculated: %ld vmcoreinfo: %ld\n",
+ machdep->machspec->VA_BITS, value);
+ }
+
if (CRASHDEBUG(1))
fprintf(fp, "VA_BITS: %ld\n", machdep->machspec->VA_BITS);
@@ -3947,15 +3739,6 @@ arm64_calc_VA_BITS(void)
*
* Since VMEMMAP_SIZE is dependent upon the size of a struct page,
* the two ranges cannot be determined until POST_GDB.
- *
- * Since 52-bit VA was introduced:
- *
- * #define STRUCT_PAGE_MAX_SHIFT 6
- * #define VMEMMAP_SIZE (UL(1) << (VA_BITS - PAGE_SHIFT - 1 + STRUCT_PAGE_MAX_SHIFT))
- * #define VMEMMAP_START (-VMEMMAP_SIZE)
- * #define VMALLOC_START (MODULES_END)
- * #define VMALLOC_END (- PUD_SIZE - VMEMMAP_SIZE - SZ_64K)
- * #define vmemmap ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT))
*/
#define ALIGN(x, a) __ALIGN_KERNEL((x), (a))
@@ -3967,18 +3750,10 @@ static void
arm64_calc_virtual_memory_ranges(void)
{
struct machine_specific *ms = machdep->machspec;
- ulong value, vmemmap_start, vmemmap_end, vmemmap_size, vmalloc_end;
- char *string;
+ ulong vmemmap_start, vmemmap_end, vmemmap_size;
+ ulong vmalloc_end;
ulong PUD_SIZE = UNINITIALIZED;
- if (!machdep->machspec->CONFIG_ARM64_VA_BITS) {
- if ((string = pc->read_vmcoreinfo("NUMBER(VA_BITS)"))) {
- value = atol(string);
- free(string);
- machdep->machspec->CONFIG_ARM64_VA_BITS = value;
- }
- }
-
if (THIS_KERNEL_VERSION < LINUX(3,17,0)) /* use original hardwired values */
return;
@@ -3997,19 +3772,8 @@ arm64_calc_virtual_memory_ranges(void)
break;
}
-#define STRUCT_PAGE_MAX_SHIFT 6
-
- if (ms->VA_BITS_ACTUAL) {
- vmemmap_size = (1UL) << (ms->CONFIG_ARM64_VA_BITS - machdep->pageshift - 1 + STRUCT_PAGE_MAX_SHIFT);
- vmalloc_end = (- PUD_SIZE - vmemmap_size - KILOBYTES(64));
- vmemmap_start = (-vmemmap_size);
- ms->vmalloc_end = vmalloc_end - 1;
- ms->vmemmap_vaddr = vmemmap_start;
- ms->vmemmap_end = -1;
- return;
- }
-
if (machdep->flags & NEW_VMEMMAP)
+#define STRUCT_PAGE_MAX_SHIFT 6
vmemmap_size = 1UL << (ms->VA_BITS - machdep->pageshift - 1
+ STRUCT_PAGE_MAX_SHIFT);
else
@@ -4033,7 +3797,7 @@ arm64_calc_virtual_memory_ranges(void)
static int
arm64_is_uvaddr(ulong addr, struct task_context *tc)
{
- return (addr < machdep->machspec->userspace_top);
+ return (addr < ARM64_USERSPACE_TOP);
}
diff --git a/defs.h b/defs.h
index ac24a5d730d5..d0b021f61c67 100644
--- a/defs.h
+++ b/defs.h
@@ -3148,17 +3148,9 @@ typedef signed int s32;
*/
#define ARM64_VA_START ((0xffffffffffffffffUL) \
<< machdep->machspec->VA_BITS)
-#define _VA_START(va) ((0xffffffffffffffffUL) - \
- ((1UL) << ((va) - 1)) + 1)
-#define TEXT_OFFSET_MASK (~((MEGABYTES(2UL))-1))
-
#define ARM64_PAGE_OFFSET ((0xffffffffffffffffUL) \
<< (machdep->machspec->VA_BITS - 1))
-#define ARM64_PAGE_OFFSET_ACTUAL ((0xffffffffffffffffUL) \
- - ((1UL) << machdep->machspec->VA_BITS_ACTUAL) + 1)
-
#define ARM64_USERSPACE_TOP ((1UL) << machdep->machspec->VA_BITS)
-#define ARM64_USERSPACE_TOP_ACTUAL ((1UL) << machdep->machspec->VA_BITS_ACTUAL)
/* only used for v4.6 or later */
#define ARM64_MODULES_VSIZE MEGABYTES(128)
@@ -3261,9 +3253,7 @@ struct machine_specific {
ulong kern_eframe_offset;
ulong machine_kexec_start;
ulong machine_kexec_end;
- ulong VA_BITS_ACTUAL;
- ulong CONFIG_ARM64_VA_BITS;
- ulong VA_START;
+ ulong vabits_user;
};
struct arm64_stackframe {
diff --git a/netdump.c b/netdump.c
index 0054d6ab35b4..31ab6fae5ccd 100644
--- a/netdump.c
+++ b/netdump.c
@@ -1228,19 +1228,7 @@ netdump_memory_dump(FILE *fp)
if (machine_type("X86_64"))
netdump_print("%lx (relocate)\n", nd->arch_data1);
else if (machine_type("ARM64"))
- netdump_print("%lx (kimage_voffset)\n", nd->arch_data1);
- } else
- netdump_print("(unused)\n");
- netdump_print(" arch_data2: ");
- if (nd->arch_data2) {
- if (machine_type("ARM64"))
- netdump_print("%016lx\n"
- " CONFIG_ARM64_VA_BITS: %ld\n"
- " VA_BITS_ACTUAL: %lld\n",
- nd->arch_data2, nd->arch_data2 & 0xffffffff,
- ((ulonglong)nd->arch_data2 >> 32));
- else
- netdump_print("%016lx (?)\n", nd->arch_data2);
+ netdump_print("%lx (kimage_voffset)\n", nd->arch_data);
} else
netdump_print("(unused)\n");
netdump_print(" switch_stack: %lx\n", nd->switch_stack);
@@ -1865,8 +1853,7 @@ vmcoreinfo_read_string(const char *key)
int i, j, end;
size_t value_length;
size_t key_length = strlen(key);
- char *vmcoreinfo;
- uint size_vmcoreinfo;
+ char *vmcoreinfo = (char *)nd->vmcoreinfo;
char *value = NULL;
/*
@@ -1875,49 +1862,25 @@ vmcoreinfo_read_string(const char *key)
* the NT_TASKSTRUCT note.
*/
if ((pc->flags2 & SNAP)) {
- if (STREQ(key, "NUMBER(kimage_voffset)") && nd->arch_data1) {
+ if (STREQ(key, "NUMBER(kimage_voffset)") && nd->arch_data) {
value = calloc(VADDR_PRLEN+1, sizeof(char));
- sprintf(value, "%lx", nd->arch_data1);
- if (nd->arch_data2 == 0)
- pc->read_vmcoreinfo = no_vmcoreinfo;
- return value;
- }
- if (STREQ(key, "NUMBER(VA_BITS)") && nd->arch_data2) {
- value = calloc(VADDR_PRLEN+1, sizeof(char));
- sprintf(value, "%ld", nd->arch_data2 & 0xffffffff);
- return value;
- }
- if (STREQ(key, "NUMBER(TCR_EL1_T1SZ)") && nd->arch_data2) {
- value = calloc(VADDR_PRLEN+1, sizeof(char));
- sprintf(value, "%lld", ((ulonglong)nd->arch_data2 >> 32) & 0xffffffff);
+ sprintf(value, "%lx", nd->arch_data);
pc->read_vmcoreinfo = no_vmcoreinfo;
return value;
}
- if (STREQ(key, "relocate") && nd->arch_data1) {
+ if (STREQ(key, "relocate") && nd->arch_data) {
value = calloc(VADDR_PRLEN+1, sizeof(char));
- sprintf(value, "%lx", nd->arch_data1);
+ sprintf(value, "%lx", nd->arch_data);
pc->read_vmcoreinfo = no_vmcoreinfo;
return value;
}
- return NULL;
- }
-
- if (nd->vmcoreinfo) {
- vmcoreinfo = (char *)nd->vmcoreinfo;
- size_vmcoreinfo = nd->size_vmcoreinfo;
- } else if (ACTIVE() && pkd->vmcoreinfo) {
- vmcoreinfo = (char *)pkd->vmcoreinfo;
- size_vmcoreinfo = pkd->size_vmcoreinfo;
- } else {
- vmcoreinfo = NULL;
- size_vmcoreinfo = 0;
}
- if (!vmcoreinfo)
+ if (!nd->vmcoreinfo)
return NULL;
/* the '+ 1' is the equal sign */
- for (i = 0; i < (int)(size_vmcoreinfo - key_length + 1); i++) {
+ for (i = 0; i < (nd->size_vmcoreinfo - key_length + 1); i++) {
/*
* We must also check if we're at the beginning of VMCOREINFO
* or the separating newline is there, and of course if we
@@ -1931,7 +1894,7 @@ vmcoreinfo_read_string(const char *key)
/* Found -- search for the next newline. */
for (j = i + key_length + 1;
- j < size_vmcoreinfo; j++) {
+ j < nd->size_vmcoreinfo; j++) {
if (vmcoreinfo[j] == '\n') {
end = j;
break;
@@ -1944,7 +1907,7 @@ vmcoreinfo_read_string(const char *key)
*/
if (end == -1) {
/* Point after the end. */
- end = size_vmcoreinfo + 1;
+ end = nd->size_vmcoreinfo + 1;
}
value_length = end - (1+ i + key_length);

43
SOURCES/github_b80b16549e24.patch Normal file
View File

@ -0,0 +1,43 @@
commit b80b16549e24769c7d5fe3a10c4b1a1c4b5161f3
Author: Dave Anderson <anderson@redhat.com>
Date: Mon Mar 23 15:52:11 2020 -0400
Fix for reading compressed kdump dumpfiles from systems with physical
memory located at extraordinarily high addresses. In a system with
a physical address range from 0x602770ecf000 to 0x6027ffffffff, the
crash utility fails during session initialization due to an integer
overflow, ending with the error message "crash: vmlinux and vmcore
do not match!".
(chenjialong@huawei.com)
diff --git crash-7.2.8/diskdump.c crash-7.2.8/diskdump.c
index e88243e616cc..328c932dad5a 100644
--- crash-7.2.8/diskdump.c
+++ crash-7.2.8/diskdump.c
@@ -233,7 +233,7 @@ clean_diskdump_data(void)
}
static inline int
-get_bit(char *map, int byte, int bit)
+get_bit(char *map, unsigned long byte, int bit)
{
return map[byte] & (1<<bit);
}
@@ -694,7 +694,7 @@ restart:
dd->max_mapnr = header->max_mapnr;
/* read memory bitmap */
- bitmap_len = block_size * header->bitmap_blocks;
+ bitmap_len = (off_t)block_size * header->bitmap_blocks;
dd->bitmap_len = bitmap_len;
offset = (off_t)block_size * (1 + header->sub_hdr_size);
@@ -744,7 +744,7 @@ restart:
memcpy(dd->dumpable_bitmap, dd->bitmap, bitmap_len);
dd->data_offset
- = (1 + header->sub_hdr_size + header->bitmap_blocks)
+ = (1UL + header->sub_hdr_size + header->bitmap_blocks)
* header->block_size;
dd->header = header;

368
SOURCES/github_b97e7fd4e826_to_8b50d94ada21.patch Normal file
View File

@ -0,0 +1,368 @@
From b97e7fd4e8268d5c46f1b30b41ce1f6ca9ceb216 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
Date: Mon, 27 Jul 2020 19:00:19 +0900
Subject: [PATCH 1/4] symbols: Add linux_banner_vmlinux in symbol table
Add linux_banner_vmlinux in symbol table, which we'll later use in
calc_kaslr_offset() to do a sanity check in calculation of
kaslr_offset and phys_base.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
---
defs.h | 1 +
symbols.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/defs.h b/defs.h
index d7adb23b86d5..17e98763362b 100644
--- a/defs.h
+++ b/defs.h
@@ -2714,6 +2714,7 @@ struct symbol_table_data {
ulong pti_init_vmlinux;
ulong kaiser_init_vmlinux;
int kernel_symbol_type;
+ ulong linux_banner_vmlinux;
};
/* flags for st */
diff --git a/symbols.c b/symbols.c
index 3b1f08af43ff..b9de4a179d93 100644
--- a/symbols.c
+++ b/symbols.c
@@ -3226,6 +3226,11 @@ dump_symbol_table(void)
fprintf(fp, " kaiser_init_vmlinux: (unused)\n");
}
+ if (SADUMP_DUMPFILE())
+ fprintf(fp, "linux_banner_vmlinux: %lx\n", st->linux_banner_vmlinux);
+ else
+ fprintf(fp, "linux_banner_vmlinux: (unused)\n");
+
fprintf(fp, " symval_hash[%d]: %lx\n", SYMVAL_HASH,
(ulong)&st->symval_hash[0]);
@@ -12687,6 +12692,11 @@ numeric_forward(const void *P_x, const void *P_y)
else if (STREQ(y->name, "idt_table"))
st->idt_table_vmlinux = valueof(y);
+ if (STREQ(x->name, "linux_banner"))
+ st->linux_banner_vmlinux = valueof(x);
+ else if (STREQ(y->name, "linux_banner"))
+ st->linux_banner_vmlinux = valueof(y);
+
if (STREQ(x->name, "saved_command_line"))
st->saved_command_line_vmlinux = valueof(x);
else if (STREQ(y->name, "saved_command_line"))
--
2.7.4
From d494fabe99b90cea8d717a90951e44e6dbda84bb Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
Date: Mon, 27 Jul 2020 19:00:20 +0900
Subject: [PATCH 2/4] symbols: fix initialization of st->{pti_init,
kaiser}_vmlinux
In numeric_forward(), care must be taken both for x- and y- positions,
but either of kaiser_init and pti_init is only for x- or y- position
only. Fix this. Also, move the code in an appropriate position
according to each symbol name in the alphabetical order.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
---
symbols.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/symbols.c b/symbols.c
index b9de4a179d93..2fecaee093a2 100644
--- a/symbols.c
+++ b/symbols.c
@@ -12692,20 +12692,25 @@ numeric_forward(const void *P_x, const void *P_y)
else if (STREQ(y->name, "idt_table"))
st->idt_table_vmlinux = valueof(y);
+ if (STREQ(x->name, "kaiser_init"))
+ st->kaiser_init_vmlinux = valueof(x);
+ else if (STREQ(y->name, "kaiser_init"))
+ st->kaiser_init_vmlinux = valueof(y);
+
if (STREQ(x->name, "linux_banner"))
st->linux_banner_vmlinux = valueof(x);
else if (STREQ(y->name, "linux_banner"))
st->linux_banner_vmlinux = valueof(y);
+ if (STREQ(x->name, "pti_init"))
+ st->pti_init_vmlinux = valueof(x);
+ else if (STREQ(y->name, "pti_init"))
+ st->pti_init_vmlinux = valueof(y);
+
if (STREQ(x->name, "saved_command_line"))
st->saved_command_line_vmlinux = valueof(x);
else if (STREQ(y->name, "saved_command_line"))
st->saved_command_line_vmlinux = valueof(y);
-
- if (STREQ(x->name, "pti_init"))
- st->pti_init_vmlinux = valueof(x);
- else if (STREQ(y->name, "kaiser_init"))
- st->kaiser_init_vmlinux = valueof(y);
}
xs = bfd_get_section(x);
--
2.7.4
From ff45c8da8cafed350940b1a56dce65f58051db5e Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
Date: Mon, 27 Jul 2020 19:00:22 +0900
Subject: [PATCH 3/4] kaslr: cleanup how to set values to the arguments of
calc_kaslr_offset()
Setting values of the arguments of calc_kaslr_offset() should be done
at the end of the function. Currently, they are set in the middle
where their values could still be changed according to
get_kaslr_offset_from_vmcoreinfo(). This behavior will be problematic
in the later commits when we implement a trial-and-error approach
because the value of kaslr_offset could be passed to the outside of
calc_kaslr_offset() unexpectedly. Thus, fix this first.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
---
kaslr_helper.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/kaslr_helper.c b/kaslr_helper.c
index fe5909caa937..acbb5c2692e2 100644
--- a/kaslr_helper.c
+++ b/kaslr_helper.c
@@ -394,10 +394,11 @@ quit:
#define PTI_USER_PGTABLE_MASK (1 << PTI_USER_PGTABLE_BIT)
#define CR3_PCID_MASK 0xFFFull
int
-calc_kaslr_offset(ulong *kaslr_offset, ulong *phys_base)
+calc_kaslr_offset(ulong *ko, ulong *pb)
{
uint64_t cr3 = 0, idtr = 0, pgd = 0, idtr_paddr;
ulong divide_error_vmcore;
+ ulong kaslr_offset, phys_base;
ulong kaslr_offset_kdump, phys_base_kdump;
int ret = FALSE;
int verbose = CRASHDEBUG(1)? 1: 0;
@@ -445,9 +446,9 @@ calc_kaslr_offset(ulong *kaslr_offset, ulong *phys_base)
/* Now we can calculate kaslr_offset and phys_base */
divide_error_vmcore = get_vec0_addr(idtr_paddr);
- *kaslr_offset = divide_error_vmcore - st->divide_error_vmlinux;
- *phys_base = idtr_paddr -
- (st->idt_table_vmlinux + *kaslr_offset - __START_KERNEL_map);
+ kaslr_offset = divide_error_vmcore - st->divide_error_vmlinux;
+ phys_base = idtr_paddr -
+ (st->idt_table_vmlinux + kaslr_offset - __START_KERNEL_map);
if (CRASHDEBUG(1)) {
fprintf(fp, "calc_kaslr_offset: idtr=%lx\n", idtr);
@@ -465,9 +466,9 @@ calc_kaslr_offset(ulong *kaslr_offset, ulong *phys_base)
* from vmcoreinfo
*/
if (get_kaslr_offset_from_vmcoreinfo(
- *kaslr_offset, &kaslr_offset_kdump, &phys_base_kdump)) {
- *kaslr_offset = kaslr_offset_kdump;
- *phys_base = phys_base_kdump;
+ kaslr_offset, &kaslr_offset_kdump, &phys_base_kdump)) {
+ kaslr_offset = kaslr_offset_kdump;
+ phys_base = phys_base_kdump;
} else if (CRASHDEBUG(1)) {
fprintf(fp, "kaslr_helper: failed to determine which kernel was running at crash,\n");
fprintf(fp, "kaslr_helper: asssuming the kdump 1st kernel.\n");
@@ -475,10 +476,13 @@ calc_kaslr_offset(ulong *kaslr_offset, ulong *phys_base)
if (CRASHDEBUG(1)) {
fprintf(fp, "calc_kaslr_offset: kaslr_offset=%lx\n",
- *kaslr_offset);
- fprintf(fp, "calc_kaslr_offset: phys_base=%lx\n", *phys_base);
+ kaslr_offset);
+ fprintf(fp, "calc_kaslr_offset: phys_base=%lx\n", phys_base);
}
+ *ko = kaslr_offset;
+ *pb = phys_base;
+
ret = TRUE;
quit:
vt->kernel_pgd[0] = 0;
--
2.7.4
From 8b50d94ada21f403665a5e562f40191f111e0313 Mon Sep 17 00:00:00 2001
From: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
Date: Mon, 27 Jul 2020 19:00:23 +0900
Subject: [PATCH 4/4] kaslr: fix failure of calculating kaslr_offset due to an
sadump format restriction
We faced recently a memory dump collected by sadump where unused part
of register values are non-zero. For the crash dump, calculating
kaslr_offset fails because it is based on the assumption that unused
part of register values in the sadump format are always zero cleared.
The problem is that used and unused part of register values are
rigorously indistinguishable in the sadump format. Although there is
kernel data structure that represents a map between logical cpu
numbers and lapic ids, they cannot be used in order to calculate
kaslr_offset.
To fix this, we have no choice but use a trial-and-error approach: try
to use each entry of register values in order until we find a good
pair of cr3 and idtr by which we can refer to linux_banner symbol as
expected.
This fix is for the sadump specific issue, so there is no functional
change for the other crash dump formats.
[ lijiang: adjust the code indent. ]
Signed-off-by: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
---
kaslr_helper.c | 39 +++++++++++++++++++++++++++++++++++----
sadump.c | 52 ++++++++++++++++++++++++++++------------------------
2 files changed, 63 insertions(+), 28 deletions(-)
diff --git a/kaslr_helper.c b/kaslr_helper.c
index acbb5c2692e2..bb19e548d04e 100644
--- a/kaslr_helper.c
+++ b/kaslr_helper.c
@@ -406,6 +406,7 @@ calc_kaslr_offset(ulong *ko, ulong *pb)
if (!machine_type("X86_64"))
return FALSE;
+retry:
if (SADUMP_DUMPFILE()) {
if (!sadump_get_cr3_idtr(&cr3, &idtr))
return FALSE;
@@ -437,12 +438,20 @@ calc_kaslr_offset(ulong *ko, ulong *pb)
machdep->machspec->pgdir_shift = PGDIR_SHIFT;
machdep->machspec->ptrs_per_pgd = PTRS_PER_PGD;
if (!readmem(pgd, PHYSADDR, machdep->pgd, PAGESIZE(),
- "pgd", RETURN_ON_ERROR))
- goto quit;
+ "pgd", RETURN_ON_ERROR)) {
+ if (SADUMP_DUMPFILE())
+ goto retry;
+ else
+ goto quit;
+ }
/* Convert virtual address of IDT table to physical address */
- if (!kvtop(NULL, idtr, &idtr_paddr, verbose))
- goto quit;
+ if (!kvtop(NULL, idtr, &idtr_paddr, verbose)) {
+ if (SADUMP_DUMPFILE())
+ goto retry;
+ else
+ goto quit;
+ }
/* Now we can calculate kaslr_offset and phys_base */
divide_error_vmcore = get_vec0_addr(idtr_paddr);
@@ -450,6 +459,28 @@ calc_kaslr_offset(ulong *ko, ulong *pb)
phys_base = idtr_paddr -
(st->idt_table_vmlinux + kaslr_offset - __START_KERNEL_map);
+ if (SADUMP_DUMPFILE()) {
+ char buf[sizeof("Linux version")];
+ ulong linux_banner_paddr;
+
+ if (!kvtop(NULL,
+ st->linux_banner_vmlinux + kaslr_offset,
+ &linux_banner_paddr,
+ verbose))
+ goto retry;
+
+ if (!readmem(linux_banner_paddr,
+ PHYSADDR,
+ buf,
+ sizeof(buf),
+ "linux_banner",
+ RETURN_ON_ERROR))
+ goto retry;
+
+ if (!STRNEQ(buf, "Linux version"))
+ goto retry;
+ }
+
if (CRASHDEBUG(1)) {
fprintf(fp, "calc_kaslr_offset: idtr=%lx\n", idtr);
fprintf(fp, "calc_kaslr_offset: pgd=%lx\n", pgd);
diff --git a/sadump.c b/sadump.c
index 35f7cf0fcf8f..009e17a4a44a 100644
--- a/sadump.c
+++ b/sadump.c
@@ -1664,29 +1664,32 @@ get_sadump_data(void)
static int
get_sadump_smram_cpu_state_any(struct sadump_smram_cpu_state *smram)
{
- ulong offset;
- struct sadump_header *sh = sd->dump_header;
- int apicid;
- struct sadump_smram_cpu_state scs, zero;
-
- offset = sd->sub_hdr_offset + sizeof(uint32_t) +
- sd->dump_header->nr_cpus * sizeof(struct sadump_apic_state);
-
- memset(&zero, 0, sizeof(zero));
-
- for (apicid = 0; apicid < sh->nr_cpus; ++apicid) {
- if (!read_device(&scs, sizeof(scs), &offset)) {
- error(INFO, "sadump: cannot read sub header "
- "cpu_state\n");
- return FALSE;
- }
- if (memcmp(&scs, &zero, sizeof(scs)) != 0) {
- *smram = scs;
- return TRUE;
- }
- }
-
- return FALSE;
+ ulong offset;
+ struct sadump_header *sh = sd->dump_header;
+ static int apicid;
+ struct sadump_smram_cpu_state scs;
+
+ if (apicid >= sh->nr_cpus)
+ return FALSE;
+
+ offset = sd->sub_hdr_offset + sizeof(uint32_t) +
+ sd->dump_header->nr_cpus * sizeof(struct sadump_apic_state) +
+ apicid * sizeof(scs);
+
+ while (apicid < sh->nr_cpus) {
+ apicid++;
+ if (!read_device(&scs, sizeof(scs), &offset)) {
+ error(INFO, "sadump: cannot read sub header "
+ "cpu_state\n");
+ return FALSE;
+ }
+ if (scs.Cr3 && (scs.IdtUpper || scs.IdtLower)) {
+ *smram = scs;
+ return TRUE;
+ }
+ }
+
+ return FALSE;
}
int
@@ -1695,7 +1698,8 @@ sadump_get_cr3_idtr(ulong *cr3, ulong *idtr)
struct sadump_smram_cpu_state scs;
memset(&scs, 0, sizeof(scs));
- get_sadump_smram_cpu_state_any(&scs);
+ if (!get_sadump_smram_cpu_state_any(&scs))
+ return FALSE;
*cr3 = scs.Cr3;
*idtr = ((uint64_t)scs.IdtUpper)<<32 | (uint64_t)scs.IdtLower;
--
2.7.4

30
SOURCES/lzo_snappy.patch
View File

@ -1,16 +1,7 @@
--- crash-7.1.5/diskdump.c.orig
+++ crash-7.1.5/diskdump.c
@@ -23,6 +23,8 @@
* GNU General Public License for more details.
*/
+#define LZO
+#define SNAPPY
#include "defs.h"
#include "diskdump.h"
#include "xen_dom0.h"
--- crash-7.1.5/Makefile.orig
+++ crash-7.1.5/Makefile
diff --git crash-7.2.8/Makefile crash-7.2.8/Makefile
index 745541012f43..d0574d8f07d3 100644
--- crash-7.2.8/Makefile
+++ crash-7.2.8/Makefile
@@ -228,7 +228,7 @@ all: make_configure
gdb_merge: force
@if [ ! -f ${GDB}/README ]; then \
@ -20,3 +11,16 @@
@echo "../../${PROGRAM} ../../${PROGRAM}lib.a" > ${GDB}/gdb/mergeobj
@rm -f ${PROGRAM}
@if [ ! -f ${GDB}/config.status ]; then \
diff --git crash-7.2.8/diskdump.c crash-7.2.8/diskdump.c
index e88243e616cc..9ccf7039231b 100644
--- crash-7.2.8/diskdump.c
+++ crash-7.2.8/diskdump.c
@@ -23,6 +23,8 @@
* GNU General Public License for more details.
*/
+#define LZO
+#define SNAPPY
#include "defs.h"
#include "diskdump.h"
#include "xen_dom0.h"

19
SOURCES/rhel8_build.patch
View File

@ -1,5 +1,7 @@
--- crash-7.2.3/Makefile.orig
+++ crash-7.2.3/Makefile
diff --git crash-7.2.8/Makefile crash-7.2.8/Makefile
index d0574d8f07d3..9dbb61d0dbc8 100644
--- crash-7.2.8/Makefile
+++ crash-7.2.8/Makefile
@@ -198,7 +198,7 @@ GDB_FLAGS=
# TARGET_CFLAGS will be configured automatically by configure
TARGET_CFLAGS=
@ -7,7 +9,7 @@
-CRASH_CFLAGS=-g -D${TARGET} ${TARGET_CFLAGS} ${GDB_FLAGS} ${CFLAGS}
+CRASH_CFLAGS=-g -D${TARGET} ${TARGET_CFLAGS} ${GDB_FLAGS} ${CFLAGS} ${CPPFLAGS} -fPIE
GPL_FILES=COPYING3
GPL_FILES=
TAR_FILES=${SOURCE_FILES} Makefile ${GPL_FILES} README .rh_rpm_package crash.8 \
@@ -228,7 +228,7 @@ all: make_configure
gdb_merge: force
@ -18,15 +20,16 @@
@echo "../../${PROGRAM} ../../${PROGRAM}lib.a" > ${GDB}/gdb/mergeobj
@rm -f ${PROGRAM}
@if [ ! -f ${GDB}/config.status ]; then \
--- crash-7.2.3/configure.c.orig
+++ crash-7.2.3/configure.c
@@ -780,7 +780,8 @@ build_configure(struct supported_gdb_ver
diff --git crash-7.2.8/configure.c crash-7.2.8/configure.c
index 75006e881f5a..06c94d58c56c 100644
--- crash-7.2.8/configure.c
+++ crash-7.2.8/configure.c
@@ -780,7 +780,8 @@ build_configure(struct supported_gdb_version *sp)
fprintf(fp2, "%s\n", sp->GDB);
sprintf(target_data.gdb_version, "%s", &sp->GDB[4]);
} else if (strncmp(buf, "LDFLAGS=", strlen("LDFLAGS=")) == 0) {
- fprintf(fp2, "LDFLAGS=%s\n", ldflags ? ldflags : "");
+ if (ldflags)
+ fprintf(fp2, "LDFLAGS=%s\n", ldflags ? ldflags : "");
+ fprintf(fp2, "LDFLAGS=%s\n", ldflags ? ldflags : "");
} else
fprintf(fp2, "%s", buf);

56
SPECS/crash.spec
View File

@ -3,21 +3,26 @@
#
Summary: Kernel analysis utility for live systems, netdump, diskdump, kdump, LKCD or mcore dumpfiles
Name: crash
Version: 7.2.7
Release: 3%{?dist}
Version: 7.2.8
Release: 7%{?dist}
License: GPLv3
Group: Development/Debuggers
Source: http://people.redhat.com/anderson/crash-%{version}.tar.gz
URL: http://people.redhat.com/anderson
Source0: https://github.com/crash-utility/crash/archive/crash-%{version}.tar.gz
Source1: http://ftp.gnu.org/gnu/gdb/gdb-7.6.tar.gz
URL: https://crash-utility.github.io
ExclusiveOS: Linux
ExclusiveArch: %{ix86} ia64 x86_64 ppc ppc64 s390 s390x %{arm} aarch64 ppc64le
Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-buildroot-%(%{__id_u} -n)
BuildRequires: ncurses-devel zlib-devel lzo-devel bison snappy-devel
Requires: binutils
Provides: bundled(gdb) = 7.6
Patch0: lzo_snappy.patch
Patch1: rhel8_build.patch
Patch2: github_105a3e13_to_b5c2359f.patch
Patch3: github_5cbb2fd8_to_6c1c8ac6.patch
Patch2: github_b80b16549e24.patch
Patch3: github_0f29a8ac6b73.patch
Patch4: github_1c45cea02df7.patch
Patch5: github_9596b4388ea5.patch
Patch6: github_b97e7fd4e826_to_8b50d94ada21.patch
%description
The core analysis suite is a self-contained tool that can be used to
@ -40,11 +45,16 @@ offered by Mission Critical Linux, or the LKCD kernel patch.
%setup -n %{name}-%{version} -q
%patch0 -p1 -b lzo_snappy.patch
%patch1 -p1 -b rhel8_build.patch
%patch2 -p1 -b github_105a3e13_to_b5c2359f.patch
%patch3 -p1 -b github_5cbb2fd8_to_6c1c8ac6.patch
%patch2 -p1 -b github_b80b16549e24.patch
%patch3 -p1 -b github_0f29a8ac6b73.patch
%patch4 -p1 -b github_1c45cea02df7.patch
%patch5 -p1 -b github_9596b4388ea5.patch
%patch6 -p1 -b github_b97e7fd4e826_to_8b50d94ada21.patch
%build
make RPMPKG="%{version}-%{release}" CFLAGS="%{optflags}"
cp %{SOURCE1} .
#make RPMPKG="%{version}-%{release}" CFLAGS="%{optflags}"
make RPMPKG="%{version}-%{release}" CFLAGS="%{optflags}" LDFLAGS="%{build_ldflags}"
%install
rm -rf %{buildroot}
@ -70,6 +80,34 @@ rm -rf %{buildroot}
%{_includedir}/*
%changelog
* Mon Aug 17 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-7
- crash/sadump, kaslr: fix failure of calculating kaslr_offset due to an sadump format restriction
Resolves: rhbz#1855527
* Fri Aug 7 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-6
- aarch64: Revert to reading CONFIG_ARM64_USER_VA_BITS_52 and CONFIG_ARM64_PA_BITS=52 for 52-bit VA/PA space.
Resolves: rhbz#1861086
* Mon Jul 27 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-5
- aarch64: Support reading extended 52-bit address space via crash-utility
Resolves: rhbz#1861086
* Fri Jul 10 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-4
- Replace people.redhat.com references with github equivalents.
Resolves: rhbz#1851745
* Mon Jun 22 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-3
- Fix for reading compressed kdump dumpfiles from systems with physical memory
Resolves: rhbz#1819606
* Mon Jun 8 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-2
- Remove wget from BuildRequires section
Resolves: rhbz#1838322
* Fri Jun 5 2020 Bhupesh Sharma <bhsharma@redhat.com> - 7.2.8-1
- Rebase to latest upstream release 7.2.8
Resolves: rhbz#1838322
* Mon Feb 3 2020 Dave Anderson <anderson@redhat.com> - 7.2.7-3
- Rebase to github commit 6c1c8ac6
Resolves: rhbz#1738619