MIPS: Audit: Fix hang in entry.S.

_TIF_WORK_MASK false had _TIF_SYSCALL_AUDIT set.  If a thread's
_TIF_SYSCALL_AUDIT is ever set this will lead to an endless loop on the
way out from a syscall.

Currently this is only a theoretic bug as init/Kconfig doesn't allow
AUDIT_SYSCALL to be enabled for MIPS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index 2376f2e06e470a264eeff5115dc692c80e9f37c3..70df9c0d3c5be20e2d7b646460276a44374fc077 100644 (file)
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -146,7 +146,8 @@ register struct thread_info *__current_thread_info __asm__("$28");
 #define _TIF_LOAD_WATCH                (1<<TIF_LOAD_WATCH)
 
 /* work to do on interrupt/exception return */
-#define _TIF_WORK_MASK         (0x0000ffef & ~_TIF_SECCOMP)
+#define _TIF_WORK_MASK         (0x0000ffef &                           \
+                                       ~(_TIF_SECCOMP | _TIF_SYSCALL_AUDIT))
 /* work to do on any return to u-space */
 #define _TIF_ALLWORK_MASK      (0x8000ffff & ~_TIF_SECCOMP)