linux-kernel - [PATCH v1 4/6] x86/boot: Allow longer parameter list for earlyprintk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250502123145.4066635-5-andriy.shevchenko@linux.intel.com>
Date: Fri,  2 May 2025 15:29:40 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Ashish Kalra <ashish.kalra@....com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	David Woodhouse <dwmw@...zon.co.uk>,
	Denis Mukhin <dmukhin@...d.com>
Subject: [PATCH v1 4/6] x86/boot: Allow longer parameter list for earlyprintk

Allow longer parameter list, up to 64 characters, for earlyprintk
to support new coming parameters.

If the parsed string is longer than this buffer it will be cut up by
the buffer size.

No functional change intended.

Note, that 'console' case is already covered.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 arch/x86/boot/early_serial_console.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/boot/early_serial_console.c b/arch/x86/boot/early_serial_console.c
index fa6520719a1e..6841f14346c2 100644
--- a/arch/x86/boot/early_serial_console.c
+++ b/arch/x86/boot/early_serial_console.c
@@ -84,7 +84,7 @@ static void parse_earlyprintk(void)
 {
 	int baud = DEFAULT_BAUD;
 	unsigned long port = 0;
-	char arg[32];
+	char arg[64];
 	int pos = 0;
 
 	if (cmdline_find_option("earlyprintk", arg, sizeof(arg)) > 0) {
-- 
2.47.2