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ARC: entry: fix syscall_trace_exit argument
Function syscall_trace_exit expects pointer to pt_regs. However r0 is also used to keep syscall return value. Restore pointer to pt_regs before calling syscall_trace_exit. Cc: <stable@vger.kernel.org> Signed-off-by: Sergey Matyukevich <sergey.matyukevich@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@kernel.org>
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@ -196,6 +196,7 @@ tracesys_exit:
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st r0, [sp, PT_r0] ; sys call return value in pt_regs
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;POST Sys Call Ptrace Hook
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mov r0, sp ; pt_regs needed
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bl @syscall_trace_exit
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b ret_from_exception ; NOT ret_from_system_call at is saves r0 which
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; we'd done before calling post hook above
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