From: Florian Fainelli <florian.fainelli@broadcom.com>
Date: Tue, 24 Jun 2025 03:00:19 +0000 (-0700)
Subject: scripts/gdb: de-reference per-CPU MCE interrupts
X-Git-Tag: v6.16-rc6~5^2~12
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=50f4d2ba26d5c3a4687ae0569be3bbf1c8f0cbed;p=thirdparty%2Flinux.git

scripts/gdb: de-reference per-CPU MCE interrupts

The per-CPU MCE interrupts are looked up by reference and need to be
de-referenced before printing, otherwise we print the addresses of the
variables instead of their contents:

MCE: 18379471554386948492   Machine check exceptions
MCP: 18379471554386948488   Machine check polls

The corrected output looks like this instead now:

MCE:          0   Machine check exceptions
MCP:          1   Machine check polls

Link: https://lkml.kernel.org/r/20250625021109.1057046-1-florian.fainelli@broadcom.com
Link: https://lkml.kernel.org/r/20250624030020.882472-1-florian.fainelli@broadcom.com
Fixes: b0969d7687a7 ("scripts/gdb: print interrupts")
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/scripts/gdb/linux/interrupts.py b/scripts/gdb/linux/interrupts.py
index 492d1f1e95292..f4f715a8f0e36 100644
--- a/scripts/gdb/linux/interrupts.py
+++ b/scripts/gdb/linux/interrupts.py
@@ -110,7 +110,7 @@ def x86_show_mce(prec, var, pfx, desc):
     pvar = gdb.parse_and_eval(var)
     text = "%*s: " % (prec, pfx)
     for cpu in cpus.each_online_cpu():
-        text += "%10u " % (cpus.per_cpu(pvar, cpu))
+        text += "%10u " % (cpus.per_cpu(pvar, cpu).dereference())
     text += "  %s\n" % (desc)
     return text