tile/ptrace: run seccomp after ptrace
Close the hole where ptrace can change a syscall out from under seccomp. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Chris Metcalf <cmetcalf@mellanox.com>
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@ -255,14 +255,15 @@ int do_syscall_trace_enter(struct pt_regs *regs)
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{
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{
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u32 work = ACCESS_ONCE(current_thread_info()->flags);
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u32 work = ACCESS_ONCE(current_thread_info()->flags);
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if ((work & _TIF_SYSCALL_TRACE) &&
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tracehook_report_syscall_entry(regs)) {
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regs->regs[TREG_SYSCALL_NR] = -1;
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return -1;
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}
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if (secure_computing(NULL) == -1)
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if (secure_computing(NULL) == -1)
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return -1;
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return -1;
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if (work & _TIF_SYSCALL_TRACE) {
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if (tracehook_report_syscall_entry(regs))
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regs->regs[TREG_SYSCALL_NR] = -1;
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}
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if (work & _TIF_SYSCALL_TRACEPOINT)
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if (work & _TIF_SYSCALL_TRACEPOINT)
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trace_sys_enter(regs, regs->regs[TREG_SYSCALL_NR]);
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trace_sys_enter(regs, regs->regs[TREG_SYSCALL_NR]);
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