diff mbox series

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

Message ID 20241111-v5_user_cfi_series-v8-20-dce14aa30207@rivosinc.com
State New
Headers show
Series riscv control-flow integrity for usermode | expand

Commit Message

Deepak Gupta Nov. 11, 2024, 8:54 p.m. UTC 
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 mbox series

Patch

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);