From: Sergey Matyukevich <sergey.matyukev...@synopsys.com> 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.
Signed-off-by: Sergey Matyukevich <sergey.matyukev...@synopsys.com> --- arch/arc/kernel/entry.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index dd77a0c8f740..66ba549b520f 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -196,6 +196,7 @@ tracesys_exit: st r0, [sp, PT_r0] ; sys call return value in pt_regs ;POST Sys Call Ptrace Hook + mov r0, sp ; pt_regs needed bl @syscall_trace_exit b ret_from_exception ; NOT ret_from_system_call at is saves r0 which ; we'd done before calling post hook above -- 2.35.1 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc