dax: fix NULL pointer dereference in __dax_dbg()

[mirror_ubuntu-eoan-kernel.git] / fs / dax.c

diff --git a/fs/dax.c b/fs/dax.c
index 7af8797590640e032c74f619b9fd1931fed77e15..513bba5f1e024149b1554e627c071d31e2bdf038 100644 (file)
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -624,6 +624,7 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address,
        }
 
        memset(&bh, 0, sizeof(bh));
+       bh.b_bdev = inode->i_sb->s_bdev;
        block = (sector_t)pgoff << (PAGE_SHIFT - blkbits);
 
        bh.b_size = PMD_SIZE;