diff options
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/Kconfig | 1 | ||||
| -rw-r--r-- | arch/alpha/mm/fault.c | 13 |
2 files changed, 4 insertions, 10 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 97fce7386b00..d95d82abdf29 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -28,6 +28,7 @@ config ALPHA select GENERIC_SMP_IDLE_THREAD select HAVE_ARCH_AUDITSYSCALL select HAVE_MOD_ARCH_SPECIFIC + select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_RELA select ODD_RT_SIGACTION select OLD_SIGSUSPEND diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c index ef427a6bdd1a..2b49aa94e4de 100644 --- a/arch/alpha/mm/fault.c +++ b/arch/alpha/mm/fault.c @@ -119,20 +119,12 @@ do_page_fault(unsigned long address, unsigned long mmcsr, flags |= FAULT_FLAG_USER; perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); retry: - mmap_read_lock(mm); - vma = find_vma(mm, address); + vma = lock_mm_and_find_vma(mm, address, regs); if (!vma) - goto bad_area; - if (vma->vm_start <= address) - goto good_area; - if (!(vma->vm_flags & VM_GROWSDOWN)) - goto bad_area; - if (expand_stack(vma, address)) - goto bad_area; + goto bad_area_nosemaphore; /* Ok, we have a good vm_area for this memory access, so we can handle it. */ - good_area: si_code = SEGV_ACCERR; if (cause < 0) { if (!(vma->vm_flags & VM_EXEC)) @@ -189,6 +181,7 @@ retry: bad_area: mmap_read_unlock(mm); + bad_area_nosemaphore: if (user_mode(regs)) goto do_sigsegv; |