jbd2: fix use after free in jbd2_log_do_checkpoint()

[linux.git] / fs / proc / vmcore.c

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 6c1c2607e9e4cf392e5faf05182a572f1c4bb175..cbde728f8ac60958a8662367c47ee2afe02af25d 100644 (file)
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -225,6 +225,7 @@ static int vmcoredd_copy_dumps(void *dst, u64 start, size_t size, int userbuf)
        return ret;
 }
 
+#ifdef CONFIG_MMU
 static int vmcoredd_mmap_dumps(struct vm_area_struct *vma, unsigned long dst,
                               u64 start, size_t size)
 {
@@ -259,6 +260,7 @@ static int vmcoredd_mmap_dumps(struct vm_area_struct *vma, unsigned long dst,
        mutex_unlock(&vmcoredd_mutex);
        return ret;
 }
+#endif /* CONFIG_MMU */
 #endif /* CONFIG_PROC_VMCORE_DEVICE_DUMP */
 
 /* Read from the ELF header and then the crash dump. On error, negative value is