+ panic-flatten-nmi_panic-control-flow.patch added to mm-nonmm-unstable branch

+ panic-flatten-nmi_panic-control-flow.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: panic: flatten nmi_panic control flow
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     panic-flatten-nmi_panic-control-flow.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/panic-flatten-nmi_panic-control-flow.patch

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

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------------------------------------------------------
From: Bradley Morgan <brads@mainlining.org>
Subject: panic: flatten nmi_panic control flow
Date: Wed, 16 Sep 2026 18:29:53 +0000

panic() is __noreturn, so the else after panic_try_start() is dead.  Drop
it so the force_cpu path can be added cleanly on top.

Link: https://lore.kernel.org/20260916182957.7788-3-brads@mainlining.org
Signed-off-by: Bradley Morgan <brads@mainlining.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Guenetr Roeck <linux@roeck-us.net>
Cc: Sashiko <sashiko-bot@kernel.org>
Cc: Wang Jinchao <wangjinchao600@gmail.com>
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: <stable@vger.kernel.org>
---

 kernel/panic.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/kernel/panic.c~panic-flatten-nmi_panic-control-flow
+++ a/kernel/panic.c
@@ -517,7 +517,8 @@ void nmi_panic(struct pt_regs *regs, con
 {
 	if (panic_try_start())
 		panic("%s", msg);
-	else if (panic_on_other_cpu())
+
+	if (panic_on_other_cpu())
 		nmi_panic_self_stop(regs);
 }
 EXPORT_SYMBOL(nmi_panic);
_

Patches currently in -mm which might be from brads@mainlining.org are

taskstats-copy-signal-stats-under-siglock-in-taskstats_exit.patch
mailmap-update-email-address-for-bradley-morgan.patch
taskstats-drop-the-unused-cpu_dont_care-enum-member.patch
panic-fix-redirect-cpu-race-in-panic_try_force_cpu.patch
panic-flatten-nmi_panic-control-flow.patch
panic-fix-va_list-reuse-in-panic_try_force_cpu.patch
panic-restore-variable-arguments-to-nmi_panic.patch
panic-allow-force_cpu-redirect-from-an-nmi.patch
panic-kill-the-buffer-unavailable-redirect-fallback.patch