The patch titled
ufs: validate maximum fast symlink size from superblock
has been removed from the -mm tree. Its filename was
ufs-validate-maximum-fast-symlink-size-from-superblock.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: ufs: validate maximum fast symlink size from superblock
From: Duane Griffin <duaneg@xxxxxxxxx>
The maximum fast symlink size is set in the superblock of certain types
of UFS filesystem. Before using it we need to check that it isn't longer
than the available space we have in the inode.
Signed-off-by: Duane Griffin <duaneg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ufs/super.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff -puN fs/ufs/super.c~ufs-validate-maximum-fast-symlink-size-from-superblock fs/ufs/super.c
--- a/fs/ufs/super.c~ufs-validate-maximum-fast-symlink-size-from-superblock
+++ a/fs/ufs/super.c
@@ -636,6 +636,7 @@ static int ufs_fill_super(struct super_b
unsigned block_size, super_block_size;
unsigned flags;
unsigned super_block_offset;
+ unsigned maxsymlen;
int ret = -EINVAL;
uspi = NULL;
@@ -1069,6 +1070,16 @@ magic_found:
uspi->s_maxsymlinklen =
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
+ if (uspi->fs_magic == UFS2_MAGIC)
+ maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
+ else
+ maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
+ if (uspi->s_maxsymlinklen > maxsymlen) {
+ ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
+ "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
+ uspi->s_maxsymlinklen = maxsymlen;
+ }
+
inode = ufs_iget(sb, UFS_ROOTINO);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
_
Patches currently in -mm which might be from duaneg@xxxxxxxxx are
origin.patch
linux-next.patch
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