From: Andy Lutomirski <luto@kernel.org>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Cc: "Frédéric Weisbecker" <fweisbec@gmail.com>,
"Rik van Riel" <riel@redhat.com>,
"Oleg Nesterov" <oleg@redhat.com>,
"Denys Vlasenko" <vda.linux@googlemail.com>,
"Borislav Petkov" <bp@alien8.de>,
"Kees Cook" <keescook@chromium.org>,
"Brian Gerst" <brgerst@gmail.com>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Andy Lutomirski" <luto@kernel.org>
Subject: [RFC/PATCH 4/7] x86/entry/32: Finish removing bogus kernel-mode check
Date: Wed, 8 Jul 2015 12:24:01 -0700 [thread overview]
Message-ID: <186986ee520fd6c44aa73073cbb7a58c2899a6d1.1436383168.git.luto@kernel.org> (raw)
In-Reply-To: <cover.1436383168.git.luto@kernel.org>
In-Reply-To: <cover.1436383168.git.luto@kernel.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
arch/x86/entry/entry_32.S | 7 -------
1 file changed, 7 deletions(-)
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index d36afad80ad1..66ff9c4055d7 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -491,13 +491,6 @@ work_notifysig: # deal with pending signals and
#endif
TRACE_IRQS_ON
ENABLE_INTERRUPTS(CLBR_NONE)
- /* Temporary sanity check */
- movb PT_CS(%esp), %bl
- andb $SEGMENT_RPL_MASK, %bl
- cmpb $USER_RPL, %bl
- jnb 2f
- ud2
-2:
xorl %edx, %edx
call do_notify_resume
jmp resume_userspace
--
2.4.3
next prev parent reply other threads:[~2015-07-08 19:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-08 19:23 [RFC/PATCH 0/7] x86_32: Migrate to new entry/exit paths Andy Lutomirski
2015-07-08 19:23 ` [RFC/PATCH 1/7] x86/entry/32: Remove 32-bit syscall audit optimizations Andy Lutomirski
2015-07-08 19:23 ` [RFC/PATCH 2/7] x86/entry/32: Fix an incorrect comment for work_notifysig_v86 Andy Lutomirski
2015-07-08 19:24 ` [RFC/PATCH 3/7] [TEMPORARY] x86/entry/32: Sanity check for work_notifysig Andy Lutomirski
2015-07-08 19:25 ` Andy Lutomirski
2015-07-08 19:24 ` Andy Lutomirski [this message]
2015-07-08 19:25 ` [RFC/PATCH 4/7] x86/entry/32: Finish removing bogus kernel-mode check Andy Lutomirski
2015-07-08 19:24 ` [RFC/PATCH 5/7] x86/vm86: Teach handle_vm86_trap to return to 32bit mode directly Andy Lutomirski
2015-07-09 22:41 ` Andy Lutomirski
2015-07-10 1:33 ` Andy Lutomirski
2015-07-10 15:27 ` Brian Gerst
2015-07-08 19:24 ` [RFC/PATCH 6/7] x86/entry/32: Use prepare_exit_to_usermode and syscall_return_slowpath Andy Lutomirski
2015-07-08 19:24 ` [RFC/PATCH 7/7] x86/entry: Remove do_notify_resume, syscall_trace_leave, and their TIF masks Andy Lutomirski
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