[PATCH v8 20/29] riscv/kernel: update __show_regs to print shadow stack register

Deepak Gupta
2024-11-11T22:15:59Z

Updating __show_regs to print captured shadow stack pointer as well.
On tasks where shadow stack is disabled, it'll simply print 0.

Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
arch/riscv/kernel/process.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index 226054db6c42..1aeb5c08a3c6 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -90,8 +90,8 @@ void __show_regs(struct pt_regs *regs)
regs->s8, regs->s9, regs->s10);
pr_cont(" s11: " REG_FMT " t3 : " REG_FMT " t4 : " REG_FMT "\n",
regs->s11, regs->t3, regs->t4);
- pr_cont(" t5 : " REG_FMT " t6 : " REG_FMT "\n",
- regs->t5, regs->t6);
+ pr_cont(" t5 : " REG_FMT " t6 : " REG_FMT " ssp : " REG_FMT "\n",
+ regs->t5, regs->t6, get_active_shstk(current));

pr_cont("status: " REG_FMT " badaddr: " REG_FMT " cause: " REG_FMT "\n",
regs->status, regs->badaddr, regs->cause);