Record PC value from regs[15], it should be regs[32] in REGS_ABI_32 mode, which cause perf parser the backtrace failed.
Signed-off-by: Jiping Ma <[email protected]> --- arch/arm64/kernel/perf_regs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/kernel/perf_regs.c b/arch/arm64/kernel/perf_regs.c index 0bbac61..4e5c68e 100644 --- a/arch/arm64/kernel/perf_regs.c +++ b/arch/arm64/kernel/perf_regs.c @@ -32,6 +32,10 @@ u64 perf_reg_value(struct pt_regs *regs, int idx) if ((u32)idx == PERF_REG_ARM64_PC) return regs->pc; + if (perf_reg_abi(current) == PERF_SAMPLE_REGS_ABI_32 + && idx == 15) + idx = PERF_REG_ARM64_PC; + return regs->regs[idx]; } -- 1.9.1
