From: Hrutvik Kanabar <hrkanabar@gmail.com>
To: Hrutvik Kanabar <hrutvik@google.com>
Cc: Marco Elver <elver@google.com>,
Aleksandr Nogikh <nogikh@google.com>,
kasan-dev@googlegroups.com,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Theodore Ts'o <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
linux-ext4@vger.kernel.org, Chris Mason <clm@fb.com>,
Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org, Jaegeuk Kim <jaegeuk@kernel.org>,
Chao Yu <chao@kernel.org>,
linux-f2fs-devel@lists.sourceforge.net,
"Darrick J . Wong" <djwong@kernel.org>,
linux-xfs@vger.kernel.org, Namjae Jeon <linkinjeon@kernel.org>,
Sungjong Seo <sj1557.seo@samsung.com>,
Anton Altaparmakov <anton@tuxera.com>,
linux-ntfs-dev@lists.sourceforge.net
Subject: [PATCH RFC 2/7] fs/ext4: support `DISABLE_FS_CSUM_VERIFICATION` config option
Date: Fri, 14 Oct 2022 08:48:32 +0000 [thread overview]
Message-ID: <20221014084837.1787196-3-hrkanabar@gmail.com> (raw)
In-Reply-To: <20221014084837.1787196-1-hrkanabar@gmail.com>
From: Hrutvik Kanabar <hrutvik@google.com>
When `DISABLE_FS_CSUM_VERIFICATION` is enabled, bypass checks in key
checksum verification functions.
Signed-off-by: Hrutvik Kanabar <hrutvik@google.com>
---
fs/ext4/bitmap.c | 6 ++++--
fs/ext4/extents.c | 3 ++-
fs/ext4/inode.c | 3 ++-
fs/ext4/ioctl.c | 3 ++-
fs/ext4/mmp.c | 3 ++-
fs/ext4/namei.c | 6 ++++--
fs/ext4/orphan.c | 3 ++-
fs/ext4/super.c | 6 ++++--
fs/ext4/xattr.c | 3 ++-
9 files changed, 24 insertions(+), 12 deletions(-)
diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c
index f63e028c638c..04ce8e4149ee 100644
--- a/fs/ext4/bitmap.c
+++ b/fs/ext4/bitmap.c
@@ -24,7 +24,8 @@ int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
__u32 provided, calculated;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
provided = le16_to_cpu(gdp->bg_inode_bitmap_csum_lo);
@@ -63,7 +64,8 @@ int ext4_block_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
struct ext4_sb_info *sbi = EXT4_SB(sb);
int sz = EXT4_CLUSTERS_PER_GROUP(sb) / 8;
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
provided = le16_to_cpu(gdp->bg_block_bitmap_csum_lo);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index f1956288307f..c1b7c8f4862c 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -63,7 +63,8 @@ static int ext4_extent_block_csum_verify(struct inode *inode,
{
struct ext4_extent_tail *et;
- if (!ext4_has_metadata_csum(inode->i_sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(inode->i_sb))
return 1;
et = find_ext4_extent_tail(eh);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2b5ef1b64249..8ec8214f1423 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -86,7 +86,8 @@ static int ext4_inode_csum_verify(struct inode *inode, struct ext4_inode *raw,
{
__u32 provided, calculated;
- if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_LINUX) ||
!ext4_has_metadata_csum(inode->i_sb))
return 1;
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 4d49c5cfb690..bae33cd83d05 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -142,7 +142,8 @@ static int ext4_update_backup_sb(struct super_block *sb,
es = (struct ext4_super_block *) (bh->b_data + offset);
lock_buffer(bh);
- if (ext4_has_metadata_csum(sb) &&
+ if (!IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) &&
+ ext4_has_metadata_csum(sb) &&
es->s_checksum != ext4_superblock_csum(sb, es)) {
ext4_msg(sb, KERN_ERR, "Invalid checksum for backup "
"superblock %llu\n", sb_block);
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 9af68a7ecdcf..605f1867958d 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -21,7 +21,8 @@ static __le32 ext4_mmp_csum(struct super_block *sb, struct mmp_struct *mmp)
static int ext4_mmp_csum_verify(struct super_block *sb, struct mmp_struct *mmp)
{
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
return mmp->mmp_checksum == ext4_mmp_csum(sb, mmp);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index d5daaf41e1fc..84a59052c51d 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -396,7 +396,8 @@ int ext4_dirblock_csum_verify(struct inode *inode, struct buffer_head *bh)
{
struct ext4_dir_entry_tail *t;
- if (!ext4_has_metadata_csum(inode->i_sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(inode->i_sb))
return 1;
t = get_dirent_tail(inode, bh);
@@ -491,7 +492,8 @@ static int ext4_dx_csum_verify(struct inode *inode,
struct dx_tail *t;
int count_offset, limit, count;
- if (!ext4_has_metadata_csum(inode->i_sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(inode->i_sb))
return 1;
c = get_dx_countlimit(inode, dirent, &count_offset);
diff --git a/fs/ext4/orphan.c b/fs/ext4/orphan.c
index 69a9cf9137a6..8a488d5521cb 100644
--- a/fs/ext4/orphan.c
+++ b/fs/ext4/orphan.c
@@ -537,7 +537,8 @@ static int ext4_orphan_file_block_csum_verify(struct super_block *sb,
struct ext4_orphan_block_tail *ot;
__le64 dsk_block_nr = cpu_to_le64(bh->b_blocknr);
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
ot = ext4_orphan_block_tail(sb, bh);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d733db8a0b02..cb6e53163441 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -287,7 +287,8 @@ __le32 ext4_superblock_csum(struct super_block *sb,
static int ext4_superblock_csum_verify(struct super_block *sb,
struct ext4_super_block *es)
{
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
return es->s_checksum == ext4_superblock_csum(sb, es);
@@ -3198,7 +3199,8 @@ static __le16 ext4_group_desc_csum(struct super_block *sb, __u32 block_group,
int ext4_group_desc_csum_verify(struct super_block *sb, __u32 block_group,
struct ext4_group_desc *gdp)
{
- if (ext4_has_group_desc_csum(sb) &&
+ if (!IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) &&
+ ext4_has_group_desc_csum(sb) &&
(gdp->bg_checksum != ext4_group_desc_csum(sb, block_group, gdp)))
return 0;
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 36d6ba7190b6..b22a0f282474 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -154,7 +154,8 @@ static int ext4_xattr_block_csum_verify(struct inode *inode,
struct ext4_xattr_header *hdr = BHDR(bh);
int ret = 1;
- if (ext4_has_metadata_csum(inode->i_sb)) {
+ if (!IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) &&
+ ext4_has_metadata_csum(inode->i_sb)) {
lock_buffer(bh);
ret = (hdr->h_checksum == ext4_xattr_block_csum(inode,
bh->b_blocknr, hdr));
--
2.38.0.413.g74048e4d9e-goog
WARNING: multiple messages have this Message-ID (diff)
From: Hrutvik Kanabar <hrkanabar@gmail.com>
To: Hrutvik Kanabar <hrutvik@google.com>
Cc: "Darrick J . Wong" <djwong@kernel.org>, Chris Mason <clm@fb.com>,
Andreas Dilger <adilger.kernel@dilger.ca>,
kasan-dev@googlegroups.com, linux-ext4@vger.kernel.org,
Namjae Jeon <linkinjeon@kernel.org>,
Marco Elver <elver@google.com>,
Josef Bacik <josef@toxicpanda.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
David Sterba <dsterba@suse.com>, Jaegeuk Kim <jaegeuk@kernel.org>,
Anton Altaparmakov <anton@tuxera.com>,
Theodore Ts'o <tytso@mit.edu>,
linux-ntfs-dev@lists.sourceforge.net,
linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-xfs@vger.kernel.org, Aleksandr Nogikh <nogikh@google.com>,
linux-fsdevel@vger.kernel.org,
Sungjong Seo <sj1557.seo@samsung.com>,
linux-btrfs@vger.kernel.org
Subject: [f2fs-dev] [PATCH RFC 2/7] fs/ext4: support `DISABLE_FS_CSUM_VERIFICATION` config option
Date: Fri, 14 Oct 2022 08:48:32 +0000 [thread overview]
Message-ID: <20221014084837.1787196-3-hrkanabar@gmail.com> (raw)
In-Reply-To: <20221014084837.1787196-1-hrkanabar@gmail.com>
From: Hrutvik Kanabar <hrutvik@google.com>
When `DISABLE_FS_CSUM_VERIFICATION` is enabled, bypass checks in key
checksum verification functions.
Signed-off-by: Hrutvik Kanabar <hrutvik@google.com>
---
fs/ext4/bitmap.c | 6 ++++--
fs/ext4/extents.c | 3 ++-
fs/ext4/inode.c | 3 ++-
fs/ext4/ioctl.c | 3 ++-
fs/ext4/mmp.c | 3 ++-
fs/ext4/namei.c | 6 ++++--
fs/ext4/orphan.c | 3 ++-
fs/ext4/super.c | 6 ++++--
fs/ext4/xattr.c | 3 ++-
9 files changed, 24 insertions(+), 12 deletions(-)
diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c
index f63e028c638c..04ce8e4149ee 100644
--- a/fs/ext4/bitmap.c
+++ b/fs/ext4/bitmap.c
@@ -24,7 +24,8 @@ int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
__u32 provided, calculated;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
provided = le16_to_cpu(gdp->bg_inode_bitmap_csum_lo);
@@ -63,7 +64,8 @@ int ext4_block_bitmap_csum_verify(struct super_block *sb, ext4_group_t group,
struct ext4_sb_info *sbi = EXT4_SB(sb);
int sz = EXT4_CLUSTERS_PER_GROUP(sb) / 8;
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
provided = le16_to_cpu(gdp->bg_block_bitmap_csum_lo);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index f1956288307f..c1b7c8f4862c 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -63,7 +63,8 @@ static int ext4_extent_block_csum_verify(struct inode *inode,
{
struct ext4_extent_tail *et;
- if (!ext4_has_metadata_csum(inode->i_sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(inode->i_sb))
return 1;
et = find_ext4_extent_tail(eh);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2b5ef1b64249..8ec8214f1423 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -86,7 +86,8 @@ static int ext4_inode_csum_verify(struct inode *inode, struct ext4_inode *raw,
{
__u32 provided, calculated;
- if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
cpu_to_le32(EXT4_OS_LINUX) ||
!ext4_has_metadata_csum(inode->i_sb))
return 1;
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 4d49c5cfb690..bae33cd83d05 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -142,7 +142,8 @@ static int ext4_update_backup_sb(struct super_block *sb,
es = (struct ext4_super_block *) (bh->b_data + offset);
lock_buffer(bh);
- if (ext4_has_metadata_csum(sb) &&
+ if (!IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) &&
+ ext4_has_metadata_csum(sb) &&
es->s_checksum != ext4_superblock_csum(sb, es)) {
ext4_msg(sb, KERN_ERR, "Invalid checksum for backup "
"superblock %llu\n", sb_block);
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 9af68a7ecdcf..605f1867958d 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -21,7 +21,8 @@ static __le32 ext4_mmp_csum(struct super_block *sb, struct mmp_struct *mmp)
static int ext4_mmp_csum_verify(struct super_block *sb, struct mmp_struct *mmp)
{
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
return mmp->mmp_checksum == ext4_mmp_csum(sb, mmp);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index d5daaf41e1fc..84a59052c51d 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -396,7 +396,8 @@ int ext4_dirblock_csum_verify(struct inode *inode, struct buffer_head *bh)
{
struct ext4_dir_entry_tail *t;
- if (!ext4_has_metadata_csum(inode->i_sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(inode->i_sb))
return 1;
t = get_dirent_tail(inode, bh);
@@ -491,7 +492,8 @@ static int ext4_dx_csum_verify(struct inode *inode,
struct dx_tail *t;
int count_offset, limit, count;
- if (!ext4_has_metadata_csum(inode->i_sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(inode->i_sb))
return 1;
c = get_dx_countlimit(inode, dirent, &count_offset);
diff --git a/fs/ext4/orphan.c b/fs/ext4/orphan.c
index 69a9cf9137a6..8a488d5521cb 100644
--- a/fs/ext4/orphan.c
+++ b/fs/ext4/orphan.c
@@ -537,7 +537,8 @@ static int ext4_orphan_file_block_csum_verify(struct super_block *sb,
struct ext4_orphan_block_tail *ot;
__le64 dsk_block_nr = cpu_to_le64(bh->b_blocknr);
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
ot = ext4_orphan_block_tail(sb, bh);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d733db8a0b02..cb6e53163441 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -287,7 +287,8 @@ __le32 ext4_superblock_csum(struct super_block *sb,
static int ext4_superblock_csum_verify(struct super_block *sb,
struct ext4_super_block *es)
{
- if (!ext4_has_metadata_csum(sb))
+ if (IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) ||
+ !ext4_has_metadata_csum(sb))
return 1;
return es->s_checksum == ext4_superblock_csum(sb, es);
@@ -3198,7 +3199,8 @@ static __le16 ext4_group_desc_csum(struct super_block *sb, __u32 block_group,
int ext4_group_desc_csum_verify(struct super_block *sb, __u32 block_group,
struct ext4_group_desc *gdp)
{
- if (ext4_has_group_desc_csum(sb) &&
+ if (!IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) &&
+ ext4_has_group_desc_csum(sb) &&
(gdp->bg_checksum != ext4_group_desc_csum(sb, block_group, gdp)))
return 0;
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 36d6ba7190b6..b22a0f282474 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -154,7 +154,8 @@ static int ext4_xattr_block_csum_verify(struct inode *inode,
struct ext4_xattr_header *hdr = BHDR(bh);
int ret = 1;
- if (ext4_has_metadata_csum(inode->i_sb)) {
+ if (!IS_ENABLED(CONFIG_DISABLE_FS_CSUM_VERIFICATION) &&
+ ext4_has_metadata_csum(inode->i_sb)) {
lock_buffer(bh);
ret = (hdr->h_checksum == ext4_xattr_block_csum(inode,
bh->b_blocknr, hdr));
--
2.38.0.413.g74048e4d9e-goog
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next prev parent reply other threads:[~2022-10-14 8:50 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-14 8:48 [PATCH RFC 0/7] fs: Debug config option to disable filesystem checksum verification for fuzzing Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] " Hrutvik Kanabar
2022-10-14 8:48 ` [PATCH RFC 1/7] fs: create `DISABLE_FS_CSUM_VERIFICATION` config option Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] " Hrutvik Kanabar
2022-10-14 8:48 ` Hrutvik Kanabar [this message]
2022-10-14 8:48 ` [f2fs-dev] [PATCH RFC 2/7] fs/ext4: support " Hrutvik Kanabar
2022-10-14 8:48 ` [PATCH RFC 3/7] fs/btrfs: " Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] " Hrutvik Kanabar
2022-10-14 10:23 ` Qu Wenruo
2022-10-14 10:23 ` [f2fs-dev] " Qu Wenruo via Linux-f2fs-devel
2022-10-17 8:43 ` Dmitry Vyukov
2022-10-17 8:43 ` [f2fs-dev] " Dmitry Vyukov via Linux-f2fs-devel
2022-10-17 9:35 ` Qu Wenruo
2022-10-17 9:35 ` [f2fs-dev] " Qu Wenruo
2022-10-14 8:48 ` [PATCH RFC 4/7] fs/exfat: " Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] " Hrutvik Kanabar
2022-10-14 8:48 ` [PATCH RFC 5/7] fs/xfs: " Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] " Hrutvik Kanabar
2022-10-14 15:44 ` Darrick J. Wong
2022-10-14 15:44 ` [f2fs-dev] " Darrick J. Wong
2022-10-17 8:32 ` Dmitry Vyukov
2022-10-17 8:32 ` [f2fs-dev] " Dmitry Vyukov via Linux-f2fs-devel
2022-10-14 8:48 ` [PATCH RFC 6/7] fs/ntfs: " Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] " Hrutvik Kanabar
2022-10-14 8:48 ` [f2fs-dev] [PATCH RFC 7/7] fs/f2fs: " Hrutvik Kanabar
2022-10-14 8:48 ` Hrutvik Kanabar
2022-10-14 9:15 ` [PATCH RFC 0/7] fs: Debug config option to disable filesystem checksum verification for fuzzing David Sterba
2022-10-14 9:15 ` [f2fs-dev] " David Sterba
2022-10-17 8:31 ` Dmitry Vyukov
2022-10-17 8:31 ` [f2fs-dev] " Dmitry Vyukov via Linux-f2fs-devel
2022-10-17 12:02 ` David Sterba
2022-10-17 12:02 ` [f2fs-dev] " David Sterba
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