From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 717A7446C18; Wed, 16 Sep 2026 20:45:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789591555; cv=none; b=EYf+WBWwY7KQW+w3SUxA+K7W6YTdWx00QtRuyDCYgRXaRHxveroxTi5Vw/xvjJu3nSMVF+0kGgJm+P+8CNbGZz0m8UnOAwI+39+Szka9NXPvochOSqPXvoSzKAAiUwLZvfCajsLEPzKZ4HXCsZtZIwofITrK+7ff6CtGNEqWHMc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789591555; c=relaxed/simple; bh=yDi8FybVWUA+27V732kMddkyRUtz4zer80grPgDRIHU=; h=Date:To:From:Subject:Message-Id; b=XHNvYbYI1i9d4sPIJJ33Lzop84D5SKiArUIMmjpo2YD7WMmM8EMmbjXYAWXlrzg1TRxAu9JVpFczOkP2cO4aZ77KAvh1bd10Svz9OIvceT8fmAymoW+tj1lmo3mQIRuoM7WAnYShpNacb6vWeAGjJkxhnoWQ247r52vLJ1zDH7Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ftBI3xGH; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ftBI3xGH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A45D91F00893; Wed, 16 Sep 2026 20:45:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789591539; bh=ZZ23Qha1+aRWBUPDkE7pY8nCKGH2kvdmPz0vQbXuWQ4=; h=Date:To:From:Subject; b=ftBI3xGHWDps5RDtW806TXRtASbwYp/ogWIJyiNNCzi+dmMjfGfOzzfm9RHwT3tIX DXrspmRebuySTsa5WC17bC1wxKQZROPRm9T0hbXjR7NFKuc7+NPw3nb3BCvOtbgxgQ Zj40IuLArXawp9TDOpir3lnQaQei1pYLsRq9LUEc= Date: Wed, 16 Sep 2026 13:45:39 -0700 To: mm-commits@vger.kernel.org,wim@linux-watchdog.org,wangjinchao600@gmail.com,stable@vger.kernel.org,sashiko-bot@kernel.org,pmladek@suse.com,linux@roeck-us.net,brads@mainlining.org,akpm@linux-foundation.org From: Andrew Morton Subject: + panic-flatten-nmi_panic-control-flow.patch added to mm-nonmm-unstable branch Message-Id: <20260916204539.A45D91F00893@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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 various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Bradley Morgan 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 Signed-off-by: Andrew Morton Reviewed-by: Petr Mladek Cc: Guenetr Roeck Cc: Sashiko Cc: Wang Jinchao Cc: Wim Van Sebroeck Cc: --- 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