linux-kernel - [PATCH 0/2] sigaltstack: remove EPERM check

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: <56905B90.6060505@list.ru>
Date:	Sat, 9 Jan 2016 04:00:00 +0300
From:	Stas Sergeev <stsp@...t.ru>
To:	Linux kernel <linux-kernel@...r.kernel.org>
Cc:	linux-api@...r.kernel.org, Andy Lutomirski <luto@...capital.net>
Subject: [PATCH 0/2] sigaltstack: remove EPERM check

The following patches add the self-test for
sigaltstack(SS_DISABLE) inside the signal handler,
and remove the EPERM check in a sigaltstack()
syscall.
This is needed to make sigaltstack() compatible with
swapcontext(): before using swapcontext() inside
the sighandler, the sigaltstack should be disabled, or
the stack will be corrupted by the subsequent signals.