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Change-Id: I7c9d49079d4e18390c2d520513a4afd55e6eaa3e

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This commit is contained in:
Sasha Levitskiy 2012-11-13 10:14:51 -08:00 committed by Iliyan Malchev
parent 2d338c789a
commit b91885c38c
2 changed files with 8 additions and 2 deletions
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3
arch/x86/Kconfig
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@ -82,7 +82,8 @@ config X86
select CLKEVT_I8253
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_IOMAP
select DCACHE_WORD_ACCESS
select DCACHE_WORD_ACCESS if !DEBUG_PAGEALLOC
select HAVE_ARCH_SECCOMP_FILTER
config INSTRUCTION_DECODER
def_bool (KPROBES || PERF_EVENTS)

7
arch/x86/kernel/ptrace.c
View file

@ -1480,7 +1480,11 @@ long syscall_trace_enter(struct pt_regs *regs)
regs->flags |= X86_EFLAGS_TF;
/* do the secure computing check first */
secure_computing(regs->orig_ax);
if (secure_computing(regs->orig_ax)) {
/* seccomp failures shouldn't expose any additional code. */
ret = -1L;
goto out;
}
if (unlikely(test_thread_flag(TIF_SYSCALL_EMU)))
ret = -1L;
@ -1505,6 +1509,7 @@ long syscall_trace_enter(struct pt_regs *regs)
regs->dx, regs->r10);
#endif
out:
return ret ?: regs->orig_ax;
}