[PATCH v16 18/27] riscv/kernel: update __show_regs to print shadow stack register
From: Deepak Gupta <hidden>
Date: 2025-05-23 05:32:12
Also in:
linux-arch, linux-devicetree, linux-doc, linux-fsdevel, linux-kselftest, linux-mm, linux-riscv, lkml
Subsystem:
risc-v architecture, the rest · Maintainers:
Paul Walmsley, Palmer Dabbelt, Albert Ou, Linus Torvalds
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 <redacted> Reviewed-by: Alexandre Ghiti <redacted> --- 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 4587201dd81d..6bb53ce72ed5 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);
--
2.43.0