102 lines
3.3 KiB
Diff
102 lines
3.3 KiB
Diff
From 54aec3878b3f91341e6bc735eda158cca5c54ec9 Mon Sep 17 00:00:00 2001
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From: Alexander Egorenkov <egorenar@linux.ibm.com>
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Date: Fri, 18 Sep 2020 13:55:56 +0200
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Subject: [PATCH] [PATCH] make use of 'uts_namespace.name' offset in VMCOREINFO
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* Required for kernel 5.11
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The offset of the field 'init_uts_ns.name' has changed since
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kernel commit 9a56493f6942 ("uts: Use generic ns_common::count").
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Make use of the offset 'uts_namespace.name' if available in
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VMCOREINFO.
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Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
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---
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makedumpfile.c | 17 +++++++++++++++--
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makedumpfile.h | 6 ++++++
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2 files changed, 21 insertions(+), 2 deletions(-)
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diff --git a/makedumpfile.c b/makedumpfile.c
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index 061741f..ecd63fa 100644
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--- a/makedumpfile-1.6.8/makedumpfile.c
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+++ b/makedumpfile-1.6.8/makedumpfile.c
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@@ -1159,7 +1159,10 @@ check_release(void)
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if (SYMBOL(system_utsname) != NOT_FOUND_SYMBOL) {
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utsname = SYMBOL(system_utsname);
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} else if (SYMBOL(init_uts_ns) != NOT_FOUND_SYMBOL) {
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- utsname = SYMBOL(init_uts_ns) + sizeof(int);
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+ if (OFFSET(uts_namespace.name) != NOT_FOUND_STRUCTURE)
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+ utsname = SYMBOL(init_uts_ns) + OFFSET(uts_namespace.name);
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+ else
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+ utsname = SYMBOL(init_uts_ns) + sizeof(int);
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} else {
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ERRMSG("Can't get the symbol of system_utsname.\n");
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return FALSE;
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@@ -2040,6 +2043,11 @@ get_structure_info(void)
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SIZE_INIT(cpu_spec, "cpu_spec");
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OFFSET_INIT(cpu_spec.mmu_features, "cpu_spec", "mmu_features");
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+ /*
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+ * Get offsets of the uts_namespace's members.
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+ */
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+ OFFSET_INIT(uts_namespace.name, "uts_namespace", "name");
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+
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return TRUE;
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}
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@@ -2109,7 +2117,10 @@ get_str_osrelease_from_vmlinux(void)
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if (SYMBOL(system_utsname) != NOT_FOUND_SYMBOL) {
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utsname = SYMBOL(system_utsname);
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} else if (SYMBOL(init_uts_ns) != NOT_FOUND_SYMBOL) {
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- utsname = SYMBOL(init_uts_ns) + sizeof(int);
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+ if (OFFSET(uts_namespace.name) != NOT_FOUND_STRUCTURE)
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+ utsname = SYMBOL(init_uts_ns) + OFFSET(uts_namespace.name);
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+ else
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+ utsname = SYMBOL(init_uts_ns) + sizeof(int);
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} else {
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ERRMSG("Can't get the symbol of system_utsname.\n");
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return FALSE;
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@@ -2344,6 +2355,7 @@ write_vmcoreinfo_data(void)
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WRITE_MEMBER_OFFSET("vmemmap_backing.list", vmemmap_backing.list);
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WRITE_MEMBER_OFFSET("mmu_psize_def.shift", mmu_psize_def.shift);
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WRITE_MEMBER_OFFSET("cpu_spec.mmu_features", cpu_spec.mmu_features);
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+ WRITE_MEMBER_OFFSET("uts_namespace.name", uts_namespace.name);
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if (SYMBOL(node_data) != NOT_FOUND_SYMBOL)
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WRITE_ARRAY_LENGTH("node_data", node_data);
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@@ -2743,6 +2755,7 @@ read_vmcoreinfo(void)
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READ_MEMBER_OFFSET("vmemmap_backing.list", vmemmap_backing.list);
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READ_MEMBER_OFFSET("mmu_psize_def.shift", mmu_psize_def.shift);
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READ_MEMBER_OFFSET("cpu_spec.mmu_features", cpu_spec.mmu_features);
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+ READ_MEMBER_OFFSET("uts_namespace.name", uts_namespace.name);
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READ_STRUCTURE_SIZE("printk_log", printk_log);
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READ_STRUCTURE_SIZE("printk_ringbuffer", printk_ringbuffer);
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diff --git a/makedumpfile.h b/makedumpfile.h
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index 47f7e79..5f50080 100644
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--- a/makedumpfile-1.6.8/makedumpfile.h
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+++ b/makedumpfile-1.6.8/makedumpfile.h
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@@ -1728,6 +1728,8 @@ struct size_table {
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long cpu_spec;
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long pageflags;
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+
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+ long uts_namespace;
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};
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struct offset_table {
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@@ -1935,6 +1937,10 @@ struct offset_table {
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struct cpu_spec_s {
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long mmu_features;
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} cpu_spec;
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+
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+ struct uts_namespace_s {
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+ long name;
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+ } uts_namespace;
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};
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/*
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--
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2.29.2
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