linux-kernel - 6.5.13 regression: BUG: kernel NULL pointer dereference, address: 0000000000000020

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Message-ID: <2b5d6cd4-0afb-4193-ab88-235f910a7293@gmx.de>
Date:   Tue, 28 Nov 2023 21:29:14 +0100
From:   Toralf Förster <toralf.foerster@....de>
To:     Linux Kernel <linux-kernel@...r.kernel.org>
Subject: 6.5.13 regression: BUG: kernel NULL pointer dereference, address:
 0000000000000020

Happened at a stable hardened Gentoo Linux (6.5.12 is fine).

p14s ~ # head /tmp/x
Nov 28 21:06:31 p14s kernel: BUG: kernel NULL pointer dereference,
address: 0000000000000020
Nov 28 21:06:31 p14s kernel: #PF: supervisor read access in kernel mode
Nov 28 21:06:31 p14s kernel: #PF: error_code(0x0000) - not-present page
Nov 28 21:06:31 p14s kernel: PGD 0 P4D 0
Nov 28 21:06:31 p14s kernel: Oops: 0000 [#1] SMP NOPTI
Nov 28 21:06:31 p14s kernel: CPU: 4 PID: 2207 Comm: ntpd Tainted: G
           T  6.5.13 #11
Nov 28 21:06:31 p14s kernel: Hardware name: LENOVO
21J5002FGE/21J5002FGE, BIOS R23ET60W (1.30 ) 09/14/2022
Nov 28 21:06:31 p14s kernel: RIP: 0010:neigh_resolve_output+0x49/0x1d0


# uname -a
Linux p14s 6.5.12 #10 SMP Mon Nov 20 13:07:17 CET 2023 x86_64 AMD Ryzen
7 PRO 6850U with Radeon Graphics AuthenticAMD GNU/Linux

attached is kernel config and the syslog

--
Toralf

View attachment "config" of type "text/plain" (180391 bytes)

View attachment "x" of type "text/plain" (184652 bytes)