linux-kernel - [PATCH v3 0/3] xtensa: fix {get,put}

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191014212513.17661-1-jcmvbkbc@gmail.com>
Date:   Mon, 14 Oct 2019 14:25:10 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     linux-xtensa@...ux-xtensa.org, Al Viro <viro@...iv.linux.org.uk>
Cc:     Chris Zankel <chris@...kel.net>, linux-kernel@...r.kernel.org,
        Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH v3 0/3] xtensa: fix {get,put}_user() for 64bit values

Hello,

this series fixes return value, out-of-bound stack access and value
truncation in xtensa implementation of {get,put}_user() for 64bit
values. It also cleans up naming of assembly parameters in
__{get,put}_user_asm and __check_align_{1,2,4}.

Changes v2->v3:
- fix assembly argument constraint for error code
- rearrange result zero-initialization for error paths in __get_user_asm

Changes v1->v2:
- initialize result when access_ok check fails in __get_user_check
- initialize result in __get_user_asm for unaligned access

Al Viro (1):
  xtensa: fix {get,put}_user() for 64bit values

Max Filippov (2):
  xtensa: clean up assembly arguments in uaccess macros
  xtensa: fix type conversion in __get_user_[no]check

 arch/xtensa/include/asm/uaccess.h | 94 +++++++++++++++++--------------
 1 file changed, 53 insertions(+), 41 deletions(-)

-- 
2.20.1