x86/syscalls/64: Add compat_sys_keyctl for 32-bit userspace
commitc6657f74f2c8c43b53afaabbf12b6bbf49874603
authorSasha Levin <alexander.levin@verizon.com>
Sun, 14 Aug 2016 23:56:14 +0000 (14 19:56 -0400)
committerSasha Levin <alexander.levin@verizon.com>
Sat, 20 Aug 2016 03:07:58 +0000 (19 23:07 -0400)
treef37f5374655c333cca67a422ae3bf741581c3c84
parent10855c6411044f502f0bde816fd8f6ea5f6c7206
x86/syscalls/64: Add compat_sys_keyctl for 32-bit userspace

[ Upstream commit f7d665627e103e82d34306c7d3f6f46f387c0d8b ]

x86_64 needs to use compat_sys_keyctl for 32-bit userspace rather than
calling sys_keyctl(). The latter will work in a lot of cases, thereby
hiding the issue.

Reported-by: Stephan Mueller <smueller@chronox.de>
Tested-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: keyrings@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/146961615805.14395.5581949237156769439.stgit@warthog.procyon.org.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
arch/x86/syscalls/syscall_32.tbl