From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: linux-man@vger.kernel.org
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>,
Alejandro Colomar <alx.manpages@gmail.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Florian Weimer <fweimer@redhat.com>,
"H.J. Lu" <hjl.tools@gmail.com>,
linux-kernel@vger.kernel.org, linux-api@vger.kenel.org
Subject: [PATCH 1/2] sigaction.2: Add SEGV_CPERR
Date: Fri, 26 Feb 2021 09:26:33 -0800 [thread overview]
Message-ID: <20210226172634.26905-2-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20210226172634.26905-1-yu-cheng.yu@intel.com>
When a branch instruction (i.e. call/ret/jmp) triggers a control-protection
fault, si_code is set to SEGV_CPERR. Add the new si_code to sigaction.2.
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: Alejandro Colomar <alx.manpages@gmail.com>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "H.J. Lu" <hjl.tools@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-api@vger.kenel.org
Link: https://lore.kernel.org/linux-api/20210217222730.15819-7-yu-cheng.yu@intel.com/
---
man2/sigaction.2 | 3 +++
1 file changed, 3 insertions(+)
diff --git a/man2/sigaction.2 b/man2/sigaction.2
index cc183198d..49a30f11e 100644
--- a/man2/sigaction.2
+++ b/man2/sigaction.2
@@ -737,6 +737,9 @@ See
.BR pkeys (7).
The protection key which applied to this access is available via
.IR si_pkey .
+.TP
+.B SEGV_CPERR
+A branch instruction (call, ret, or jmp) triggered a control-protection fault.
.RE
.PP
The following values can be placed in
--
2.21.0
next parent reply other threads:[~2021-02-26 17:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210226172634.26905-1-yu-cheng.yu@intel.com>
2021-02-26 17:26 ` Yu-cheng Yu [this message]
2021-02-26 17:26 ` [PATCH 2/2] sigaction.2: wfix - Clarify si_addr description Yu-cheng Yu
2021-03-08 21:30 ` Borislav Petkov
2021-03-08 21:46 ` Yu, Yu-cheng
2021-03-09 14:31 ` Borislav Petkov
[not found] ` <CACKs7VBLnQTc_RgnXk8X-XgVRvR5_uXY0wL0snW7P5iDjpb8fA@mail.gmail.com>
2021-03-11 17:33 ` Yu, Yu-cheng
2021-03-12 12:55 ` Stefan Puiu
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