diff mbox series

[-fixes,1/2] riscv: Handle VM_FAULT_[HWPOISON|HWPOISON_LARGE] faults instead of panicking

Message ID 20230928151846.8229-2-alexghiti@rivosinc.com
State New
Headers
Series Fix set_huge_pte_at() |

Commit Message

Alexandre Ghiti Sept. 28, 2023, 3:18 p.m. UTC 
  We used to panic when such faults were encountered but we should handle
those faults gracefully for userspace by sending a SIGBUS to the process,
like most architectures do.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
 arch/riscv/mm/fault.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c
index 6115d7514972..90d4ba36d1d0 100644
--- a/arch/riscv/mm/fault.c
+++ b/arch/riscv/mm/fault.c
@@ -72,7 +72,7 @@  static inline void mm_fault_error(struct pt_regs *regs, unsigned long addr, vm_f
 		}
 		pagefault_out_of_memory();
 		return;
-	} else if (fault & VM_FAULT_SIGBUS) {
+	} else if (fault & (VM_FAULT_SIGBUS | VM_FAULT_HWPOISON | VM_FAULT_HWPOISON_LARGE)) {
 		/* Kernel mode? Handle exceptions or die */
 		if (!user_mode(regs)) {
 			no_context(regs, addr);