The patch titled
freevxfs: possible null pointer dereference fix
has been removed from the -mm tree. Its filename was
freevxfs-possible-null-pointer-dereference-fix.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: freevxfs: possible null pointer dereference fix
From: Dmitriy Monakhov <dmonakhov@xxxxx>
sb_read may return NULL, so let's explicitly check it.
Signed-off-by: Dmitriy Monakhov <dmonakhov@xxxxxxxxxx>
Acked-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/freevxfs/vxfs_bmap.c | 2 +-
fs/freevxfs/vxfs_inode.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN fs/freevxfs/vxfs_bmap.c~freevxfs-possible-null-pointer-dereference-fix fs/freevxfs/vxfs_bmap.c
--- a/fs/freevxfs/vxfs_bmap.c~freevxfs-possible-null-pointer-dereference-fix
+++ a/fs/freevxfs/vxfs_bmap.c
@@ -137,7 +137,7 @@ vxfs_bmap_indir(struct inode *ip, long i
bp = sb_bread(ip->i_sb,
indir + (i / VXFS_TYPED_PER_BLOCK(ip->i_sb)));
- if (!buffer_mapped(bp))
+ if (!bp || !buffer_mapped(bp))
return 0;
typ = ((struct vxfs_typed *)bp->b_data) +
diff -puN fs/freevxfs/vxfs_inode.c~freevxfs-possible-null-pointer-dereference-fix fs/freevxfs/vxfs_inode.c
--- a/fs/freevxfs/vxfs_inode.c~freevxfs-possible-null-pointer-dereference-fix
+++ a/fs/freevxfs/vxfs_inode.c
@@ -99,7 +99,7 @@ vxfs_blkiget(struct super_block *sbp, u_
offset = ((ino % (sbp->s_blocksize / VXFS_ISIZE)) * VXFS_ISIZE);
bp = sb_bread(sbp, block);
- if (buffer_mapped(bp)) {
+ if (bp && buffer_mapped(bp)) {
struct vxfs_inode_info *vip;
struct vxfs_dinode *dip;
_
Patches currently in -mm which might be from dmonakhov@xxxxx are
origin.patch
-
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