From: David Howells <dhowe...@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 20f06ed9f61a185c6dabd662c310bed6189470df upstream.

MIPS64 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 <smuel...@chronox.de>
Signed-off-by: David Howells <dhowe...@redhat.com>
Cc: linux-m...@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-security-mod...@vger.kernel.org
Cc: keyri...@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13832/
Signed-off-by: Ralf Baechle <r...@linux-mips.org>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
 arch/mips/kernel/scall64-n32.S | 2 +-
 arch/mips/kernel/scall64-o32.S | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index cab150789c8d..b657fbefc466 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -349,7 +349,7 @@ EXPORT(sysn32_call_table)
        PTR     sys_ni_syscall                  /* available, was setaltroot */
        PTR     sys_add_key
        PTR     sys_request_key
-       PTR     sys_keyctl                      /* 6245 */
+       PTR     compat_sys_keyctl               /* 6245 */
        PTR     sys_set_thread_area
        PTR     sys_inotify_init
        PTR     sys_inotify_add_watch
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 37605dc8eef7..bf56d7e271dd 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -474,7 +474,7 @@ sys_call_table:
        PTR     sys_ni_syscall                  /* available, was setaltroot */
        PTR     sys_add_key                     /* 4280 */
        PTR     sys_request_key
-       PTR     sys_keyctl
+       PTR     compat_sys_keyctl
        PTR     sys_set_thread_area
        PTR     sys_inotify_init
        PTR     sys_inotify_add_watch           /* 4285 */
-- 
2.9.3

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