+ scripts-gdb-de-reference-per-cpu-mce-interrupts.patch added to mm-hotfixes-unstable branch

+ scripts-gdb-de-reference-per-cpu-mce-interrupts.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: scripts/gdb: de-reference per-CPU MCE interrupts
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     scripts-gdb-de-reference-per-cpu-mce-interrupts.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/scripts-gdb-de-reference-per-cpu-mce-interrupts.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Florian Fainelli <florian.fainelli@broadcom.com>
Subject: scripts/gdb: de-reference per-CPU MCE interrupts
Date: Mon, 23 Jun 2025 20:00:19 -0700

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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/gdb/linux/interrupts.py |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/gdb/linux/interrupts.py~scripts-gdb-de-reference-per-cpu-mce-interrupts
+++ a/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
 
_

Patches currently in -mm which might be from florian.fainelli@broadcom.com are

scripts-gdb-fix-dentry_name-lookup.patch
scripts-gdb-fix-interrupts-display-after-mcp-on-x86.patch
scripts-gdb-fix-interruptspy-after-maple-tree-conversion.patch
scripts-gdb-de-reference-per-cpu-mce-interrupts.patch

+ scripts-gdb-de-reference-per-cpu-mce-interrupts.patch added to mm-hotfixes-unstable branch

[Andrew Morton]

The patch titled
     Subject: scripts/gdb: de-reference per-CPU MCE interrupts
has been added to the -mm mm-hotfixes-unstable branch.  Its filename is
     scripts-gdb-de-reference-per-cpu-mce-interrupts.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/scripts-gdb-de-reference-per-cpu-mce-interrupts.patch

This patch will later appear in the mm-hotfixes-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Florian Fainelli <florian.fainelli@broadcom.com>
Subject: scripts/gdb: de-reference per-CPU MCE interrupts
Date: Mon, 23 Jun 2025 20:00:19 -0700

The per-CPU MCE interrupts are looked up by reference and need to be
de-referenced before printing.

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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/gdb/linux/interrupts.py |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/gdb/linux/interrupts.py~scripts-gdb-de-reference-per-cpu-mce-interrupts
+++ a/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
 
_

Patches currently in -mm which might be from florian.fainelli@broadcom.com are

scripts-gdb-fix-dentry_name-lookup.patch
scripts-gdb-fix-interrupts-display-after-mcp-on-x86.patch
scripts-gdb-fix-interruptspy-after-maple-tree-conversion.patch
scripts-gdb-de-reference-per-cpu-mce-interrupts.patch