linux-kernel - [PATCH v2 0/3] Handle delay slot for extable lookup

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Date: Fri, 02 Feb 2024 12:30:25 +0000
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: Oleg Nesterov <oleg@...hat.com>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
 Andrew Morton <akpm@...ux-foundation.org>, 
 Ben Hutchings <ben@...adent.org.uk>
Cc: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-mips@...r.kernel.org, linux-mm@...ck.org, 
 Jiaxun Yang <jiaxun.yang@...goat.com>, Xi Ruoyao <xry111@...111.site>, 
 Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH v2 0/3] Handle delay slot for extable lookup

Hi all,

This series fixed extable handling for architecture delay slot (MIPS).

Please see previous discussions at [1].

There are some other places in kernel not handling delay slots properly,
such as uprobe and kgdb, I'll sort them later.

Thanks!

[1]: https://lore.kernel.org/lkml/75e9fd7b08562ad9b456a5bdaacb7cc220311cc9.camel@xry111.site

To: Oleg Nesterov <oleg@...hat.com>

To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>

To: Andrew Morton <akpm@...ux-foundation.org>
To: Ben Hutchings <ben@...adent.org.uk>

Cc:  <linux-arch@...r.kernel.org>
Cc:  <linux-kernel@...r.kernel.org>

Cc:  <linux-mips@...r.kernel.org>

Cc:  <linux-mm@...ck.org>

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
Changes in v2:
- Reduce diffstat by implemente fallback macro in linux/ptrace.h (linus)
- Link to v1: https://lore.kernel.org/r/20240201-exception_ip-v1-0-aa26ab3ee0b5@flygoat.com

---
Jiaxun Yang (3):
      ptrace: Introduce exception_ip arch hook
      MIPS: Clear Cause.BD in instruction_pointer_set
      mm/memory: Use exception ip to search exception tables

 arch/mips/include/asm/ptrace.h | 3 +++
 arch/mips/kernel/ptrace.c      | 7 +++++++
 include/linux/ptrace.h         | 4 ++++
 mm/memory.c                    | 4 ++--
 4 files changed, 16 insertions(+), 2 deletions(-)
---
base-commit: 06f658aadff0e483ee4f807b0b46c9e5cba62bfa
change-id: 20240131-exception_ip-194e4ad0e6ca

Best regards,
-- 
Jiaxun Yang <jiaxun.yang@...goat.com>