From: Steven Rostedt <rostedt@goodmis.org>
To: <kabe@vega.pgw.jp>
Cc: regressions@lists.linux.dev, bagasdotme@gmail.com,
alexander.deucher@amd.com, christian.koenig@amd.com,
Xinhui.Pan@amd.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org,
kkabe@vega.pgw.jp
Subject: Re: radeon.ko/i586: BUG: kernel NULL pointer dereference,address:00000004
Date: Sun, 23 Jul 2023 10:27:33 -0400 [thread overview]
Message-ID: <20230723102733.70baeb1a@rorschach.local.home> (raw)
In-Reply-To: <230722113014.M0204460@vega.pgw.jp>
On Sat, 22 Jul 2023 11:30:14 +0900
<kabe@vega.pgw.jp> wrote:
> >> diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h
> >> index 897cf02c20b1..801f4414da3e 100644
> >> --- a/arch/x86/include/asm/ftrace.h
> >> +++ b/arch/x86/include/asm/ftrace.h
> >> @@ -13,7 +13,7 @@
> >> #ifdef CONFIG_HAVE_FENTRY
> >> # include <asm/ibt.h>
> >> /* Add offset for endbr64 if IBT enabled */
> >> -# define FTRACE_MCOUNT_MAX_OFFSET ENDBR_INSN_SIZE
> >> +# define FTRACE_MCOUNT_MAX_OFFSET (ENDBR_INSN_SIZE + MCOUNT_INSN_SIZE)
> >> #endif
> >>
> >> #ifdef CONFIG_DYNAMIC_FTRACE
> >>
>
> Above patch didn't work, but
> Does it matter that I am compiling with "gcc -fcf-protection=none"
> to not emit endbr32 instructions for i586?
This patch is supposed to address the case when ENDBR_INSN_SIZE is
zero. So I would think that that wouldn't matter.
-- Steve
next prev parent reply other threads:[~2023-07-23 14:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-14 2:50 Fwd: radeon.ko/i586: BUG: kernel NULL pointer dereference, address: 00000004 Bagas Sanjaya
2023-07-14 3:12 ` Steven Rostedt
2023-07-14 3:44 ` Linux regression tracking (Thorsten Leemhuis)
2023-07-14 5:32 ` radeon.ko/i586: BUG: kernel NULL pointer dereference, address:00000004 kkabe
2023-07-14 5:34 ` kkabe
2023-07-14 14:00 ` Steven Rostedt
2023-07-15 2:39 ` radeon.ko/i586: BUG: kernel NULL pointer dereference,address:00000004 kkabe
2023-07-17 15:21 ` Steven Rostedt
2023-07-22 1:57 ` radeon.ko/i586: BUG: kernel NULL pointerdereference,address:00000004 kkabe
2023-07-17 15:36 ` radeon.ko/i586: BUG: kernel NULL pointer dereference, address:00000004 Steven Rostedt
2023-07-20 23:39 ` radeon.ko/i586: BUG: kernel NULL pointer dereference,address:00000004 kkabe
2023-07-22 2:30 ` kabe
2023-07-23 11:55 ` kkabe
2023-07-23 14:32 ` Steven Rostedt
2023-08-29 12:08 ` Linux regression tracking (Thorsten Leemhuis)
2023-07-23 14:27 ` Steven Rostedt [this message]
2023-10-02 10:03 ` Fwd: radeon.ko/i586: BUG: kernel NULL pointer dereference, address: 00000004 Linux regression tracking #update (Thorsten Leemhuis)
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