Blame SOURCES/0003-ppc64-fix-bt-for-S-case.patch
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From 1c918c621e48f53ea69a143aabc59c8366102236 Mon Sep 17 00:00:00 2001
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From: Hari Bathini <hbathini@linux.ibm.com>
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Date: Mon, 4 Jul 2022 10:55:41 +0530
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Subject: [PATCH 03/28] ppc64: fix bt for '-S' case
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Passing '-S' option to 'bt' command was intended to specify the stack
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pointer manually. But get_stack_frame() handling on ppc64 is ignoring
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this option altogether. Fix it.
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Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
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Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
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---
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ppc64.c | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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diff --git a/ppc64.c b/ppc64.c
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index 975caa53b812..0e1d8678eef5 100644
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--- a/ppc64.c
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+++ b/ppc64.c
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@@ -2330,6 +2330,22 @@ ppc64_vmcore_stack_frame(struct bt_info *bt_in, ulong *nip, ulong *ksp)
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pt_regs = (struct ppc64_pt_regs *)bt_in->machdep;
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if (!pt_regs || !pt_regs->gpr[1]) {
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+ if (bt_in->hp) {
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+ if (bt_in->hp->esp) {
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+ *ksp = bt_in->hp->esp;
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+ if (!bt_in->hp->eip) {
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+ if (IS_KVADDR(*ksp)) {
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+ readmem(*ksp+16, KVADDR, &unip, sizeof(ulong),
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+ "Regs NIP value", FAULT_ON_ERROR);
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+ *nip = unip;
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+ }
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+ } else
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+ *nip = bt_in->hp->eip;
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+
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+ }
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+ return TRUE;
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+ }
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+
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/*
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* Not collected regs. May be the corresponding CPU not
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* responded to an IPI in case of KDump OR f/w has not
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--
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2.37.1
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