diff options
Diffstat (limited to 'arch/s390/mm/extable.c')
| -rw-r--r-- | arch/s390/mm/extable.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/s390/mm/extable.c b/arch/s390/mm/extable.c index ac6b736ac883..8ac8ad2474a0 100644 --- a/arch/s390/mm/extable.c +++ b/arch/s390/mm/extable.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 #include <linux/extable.h> +#include <linux/errno.h> #include <linux/panic.h> #include <asm/asm-extable.h> #include <asm/extable.h> @@ -23,6 +24,13 @@ static bool ex_handler_fixup(const struct exception_table_entry *ex, struct pt_r return true; } +static bool ex_handler_uaccess(const struct exception_table_entry *ex, struct pt_regs *regs) +{ + regs->gprs[ex->data] = -EFAULT; + regs->psw.addr = extable_fixup(ex); + return true; +} + bool fixup_exception(struct pt_regs *regs) { const struct exception_table_entry *ex; @@ -35,6 +43,8 @@ bool fixup_exception(struct pt_regs *regs) return ex_handler_fixup(ex, regs); case EX_TYPE_BPF: return ex_handler_bpf(ex, regs); + case EX_TYPE_UACCESS: + return ex_handler_uaccess(ex, regs); } panic("invalid exception table entry"); } |