From: Richard Weinberger <richard@sigma-star.at>
To: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, mingo@kernel.org
Subject: Re: WARNING: kernel stack frame pointer at ffff880156a5fea0 in bash:2103 has bad value 00007ffec7d87e50
Date: Sat, 30 Sep 2017 22:01:56 +0200 [thread overview]
Message-ID: <3328361.HTSf9WV6P2@blindfold> (raw)
In-Reply-To: <20170927141430.i6awpjkyoqffof4b@treble>
Josh,
Am Mittwoch, 27. September 2017, 16:14:30 CEST schrieb Josh Poimboeuf:
> On Wed, Sep 27, 2017 at 08:51:22AM +0200, Richard Weinberger wrote:
> > Am Mittwoch, 27. September 2017, 00:42:46 CEST schrieb Josh Poimboeuf:
> > > > Here is another variant of the warning, it matches the attached
.config:
> > > I can take a look at it. Unfortunately, for these types of issues I
> > > often need the vmlinux file to be able to make sense of the unwinder
> > > dump. So if you happen to have somewhere to copy the vmlinux to, that
> > > would be helpful. Or if you give me your GCC version I can try to
> > > rebuild it locally.
> >
> > There you go:
> > http://git.infradead.org/~rw/bpf_splat/vmlinux.xz
>
> Thanks. Can you test this fix?
>
>
> diff --git a/arch/x86/kernel/kprobes/common.h
> b/arch/x86/kernel/kprobes/common.h index db2182d63ed0..3fc0f9a794cb 100644
> --- a/arch/x86/kernel/kprobes/common.h
> +++ b/arch/x86/kernel/kprobes/common.h
> @@ -3,6 +3,15 @@
>
> /* Kprobes and Optprobes common header */
>
> +#include <asm/asm.h>
> +
> +#ifdef CONFIG_FRAME_POINTER
> +# define SAVE_RBP_STRING " push %" _ASM_BP "\n" \
> + " mov %" _ASM_SP ", %" _ASM_BP "\n"
> +#else
> +# define SAVE_RBP_STRING " push %" _ASM_BP "\n"
> +#endif
> +
> #ifdef CONFIG_X86_64
> #define SAVE_REGS_STRING \
> /* Skip cs, ip, orig_ax. */ \
> @@ -17,7 +26,7 @@
> " pushq %r10\n" \
> " pushq %r11\n" \
> " pushq %rbx\n" \
> - " pushq %rbp\n" \
> + SAVE_RBP_STRING \
> " pushq %r12\n" \
> " pushq %r13\n" \
> " pushq %r14\n" \
> @@ -48,7 +57,7 @@
> " pushl %es\n" \
> " pushl %ds\n" \
> " pushl %eax\n" \
> - " pushl %ebp\n" \
> + SAVE_RBP_STRING \
> " pushl %edi\n" \
> " pushl %esi\n" \
> " pushl %edx\n" \
This fixes the issue for me!
Thanks,
//richard
--
sigma star gmbh - Eduard-Bodem-Gasse 6 - 6020 Innsbruck - Austria
ATU66964118 - FN 374287y
prev parent reply other threads:[~2017-09-30 20:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-25 21:23 WARNING: kernel stack frame pointer at ffff880156a5fea0 in bash:2103 has bad value 00007ffec7d87e50 Richard Weinberger
2017-09-26 4:09 ` Alexei Starovoitov
2017-09-26 21:51 ` Richard Weinberger
2017-09-26 21:59 ` Daniel Borkmann
2017-09-26 22:42 ` Josh Poimboeuf
2017-09-27 6:51 ` Richard Weinberger
2017-09-27 14:14 ` Josh Poimboeuf
2017-09-30 20:01 ` Richard Weinberger [this message]
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