diff options
Diffstat (limited to 'arch/arm64/mm/fault.c')
| -rw-r--r-- | arch/arm64/mm/fault.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index afadae6682ed..1426468b77f3 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -57,16 +57,16 @@ void show_pte(struct mm_struct *mm, unsigned long addr) pmd_t *pmd; pte_t *pte; - if (pgd_none_or_clear_bad(pgd)) + if (pgd_none(*pgd) || pgd_bad(*pgd)) break; pud = pud_offset(pgd, addr); - if (pud_none_or_clear_bad(pud)) + if (pud_none(*pud) || pud_bad(*pud)) break; pmd = pmd_offset(pud, addr); printk(", *pmd=%016llx", pmd_val(*pmd)); - if (pmd_none_or_clear_bad(pmd)) + if (pmd_none(*pmd) || pmd_bad(*pmd)) break; pte = pte_offset_map(pmd, addr); @@ -113,7 +113,8 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr, { struct siginfo si; - if (show_unhandled_signals) { + if (show_unhandled_signals && unhandled_signal(tsk, sig) && + printk_ratelimit()) { pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n", tsk->comm, task_pid_nr(tsk), fault_name(esr), sig, addr, esr); @@ -148,6 +149,7 @@ void do_bad_area(unsigned long addr, unsigned int esr, struct pt_regs *regs) #define VM_FAULT_BADACCESS 0x020000 #define ESR_WRITE (1 << 6) +#define ESR_CM (1 << 8) #define ESR_LNX_EXEC (1 << 24) /* @@ -206,7 +208,7 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr, struct task_struct *tsk; struct mm_struct *mm; int fault, sig, code; - int write = esr & ESR_WRITE; + bool write = (esr & ESR_WRITE) && !(esr & ESR_CM); unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE | (write ? FAULT_FLAG_WRITE : 0); |