linux-kernel - [PATCH 0/4] Fix a segmentation fault also add raid6test for RISC-V support

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Message-Id: <20250610101234.1100660-1-zhangchunyan@iscas.ac.cn>
Date: Tue, 10 Jun 2025 18:12:30 +0800
From: Chunyan Zhang <zhangchunyan@...as.ac.cn>
To: Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Charlie Jenkins <charlie@...osinc.com>,
	Song Liu <song@...nel.org>,
	Yu Kuai <yukuai3@...wei.com>
Cc: linux-riscv@...ts.infradead.org,
	linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chunyan Zhang <zhang.lyra@...il.com>
Subject: [PATCH 0/4] Fix a segmentation fault also add raid6test for RISC-V support

The first two patches are fixes. 
The last two are for userspace raid6test support on RISC-V.

The issue fixed in patch 2/4 was probably the same which was spotted by
Charlie [1], I couldn't reproduce it at that time.

When running raid6test in userspace on RISC-V, I saw a segmentation fault,
I used gdb command to print pointer p, it was an unaccessible address.

With patch 2/4, the issue didn't appear anymore.

[1] https://lore.kernel.org/lkml/Z5gJ35pXI2W41QDk@ghost/

Chunyan Zhang (4):
  raid6: riscv: clean up unused header file inclusion
  raid6: riscv: Fix NULL pointer dereference issue
  raid6: riscv: Allow code to be compiled in userspace
  raid6: test: add support for RISC-V

 lib/raid6/recov_rvv.c   |  9 +-----
 lib/raid6/rvv.c         | 62 +++++++++++++++++++++--------------------
 lib/raid6/rvv.h         | 15 ++++++++++
 lib/raid6/test/Makefile |  8 ++++++
 4 files changed, 56 insertions(+), 38 deletions(-)

-- 
2.34.1