Both INT (INT n, INT1, INT3, INTO) and UD (UD0, UD1, UD2) serve special
purposes in the kernel, e.g., INT3 is used by KGDB and UD2 is involved
in LLVM-KCFI instrumentation. At the same time, attaching kprobes on
these instructions (particularly UD) will pollute the stack trace dumped
in the kernel
With the instruction decoder, we are now able to decode and recognize
instructions with opcode extensions. There are more instructions in
these groups that can be boosted:
Group 2: ROL, ROR, RCL, RCR, SHL/SAL, SHR, SAR
Group 3: TEST, NOT, NEG, MUL, IMUL, DIV, IDIV
Group 4: INC, DEC (byte operation
Both can_probe and can_boost have int return type but are using int as
boolean in their context.
Refactor both functions to make them actually return boolean.
Signed-off-by: Jinghao Jia
---
arch/x86/kernel/kprobes/common.h | 2 +-
arch/x86/kernel/kprobes/core.c | 33 +++--
On 2024/2/4 9:30, Jason Wang wrote:
> On Fri, Feb 2, 2024 at 8:24 PM Yunsheng Lin wrote:
>>
>> On 2024/2/2 12:05, Jason Wang wrote:
>>> On Tue, Jan 30, 2024 at 7:38 PM Yunsheng Lin wrote:
introduce vhost_net_test basing on virtio_test to test
vhost_net changing in the kernel.
>>>
>
Hi everyone,
This patch set makes the following 3 changes:
- It refactors the can_probe and can_boost function to make them return
bool instead of int. Both functions are just using int as bool so let's
make them return a real boolean value.
- It adds an exception opcode detector to prevent
On Fri, Feb 2, 2024 at 8:24 PM Yunsheng Lin wrote:
>
> On 2024/2/2 12:05, Jason Wang wrote:
> > On Tue, Jan 30, 2024 at 7:38 PM Yunsheng Lin wrote:
> >>
> >> introduce vhost_net_test basing on virtio_test to test
> >> vhost_net changing in the kernel.
> >
> > Let's describe what kind of test is b
Hello,
On 2024/2/4 6:00, Paul E. McKenney wrote:
On Mon, Jan 29, 2024 at 08:58:10AM +0800, Yang Jihong wrote:
Hello,
On 2024/1/28 3:22, Paul E. McKenney wrote:
On Tue, Jan 09, 2024 at 07:28:29PM +0800, Yang Jihong wrote:
Hello,
PING.
I had a similar problem. Is this solution feasible?
Sa
On Tue, 30 Jan 2024 16:22:06 +
Vincent Donnefort wrote:
> > > +static void rb_update_meta_page(struct ring_buffer_per_cpu *cpu_buffer)
> > > +{
> > > + struct trace_buffer_meta *meta = cpu_buffer->meta_page;
> > > +
> > > + WRITE_ONCE(meta->reader.read, cpu_buffer->reader_page->read);
> > > +
On Mon, 29 Jan 2024 14:27:58 +
Vincent Donnefort wrote:
> --- /dev/null
> +++ b/include/uapi/linux/trace_mmap.h
> @@ -0,0 +1,43 @@
> +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> +#ifndef _TRACE_MMAP_H_
> +#define _TRACE_MMAP_H_
> +
> +#include
> +
> +/**
> + * struct tra
On Mon, Jan 29, 2024 at 08:58:10AM +0800, Yang Jihong wrote:
> Hello,
>
> On 2024/1/28 3:22, Paul E. McKenney wrote:
> > On Tue, Jan 09, 2024 at 07:28:29PM +0800, Yang Jihong wrote:
> > > Hello,
> > >
> > > PING.
> > >
> > > I had a similar problem. Is this solution feasible?
> >
> > Sadly, no.
Hi Pavel,
On Thu, Feb 01, 2024 at 11:41:56AM +0100, Pavel Machek wrote:
> From: Ondrej Jirman
>
> This is driver for ANX7688 USB-C HDMI, with flashing and debugging
> features removed. ANX7688 is rather criticial piece on PinePhone,
> there's no display and no battery charging without it.
Don't
On Sat, 03 Feb 2024 14:16:16 +0800 Ubisectech Sirius
> Hello.
> We are Ubisectech Sirius Team, the vulnerability lab of China ValiantSec.
> Recently, our team has discovered a issue in Linux kernel
> 6.8.0-rc2-g6764c317b6bb.
> Attached to the email were a POC file of the issue.
Could you test if
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