[PATCH v2 0/3] btrfs-progs: check: verify symlinks with append/immutable flags

[PATCH v2 0/3] btrfs-progs: check: verify symlinks with append/immutable flags

[Su Yue]

This patchset can be fetch from my github:
https://github.com/Damenly/btrfs-progs/commits/odd_inode_flags
It's based on devel.

symlinks should never have append/immutable attributes.
This patchset enables btrfs check to verify such corruption.

PATCH[1] is for original mode.
PATCH[2] is for original mode.

PATCH[3] adds a test image.
For further use, the directory is called bad-inode-flags.

#issue 133

---
Changelog:
v2:
  Use "rec->errors |=" instead of "rec->errors =" in patch[1].
  Define new error bit of invalid inode flags in lowmem mode.
  Adjust print message in patch[2]. Thanks, Qu and Nikolay.
  Rename test directory from odd-inode-flags to bad-inode-flags.

Su Yue (3):
  btrfs-progs: check: check symlinks with append/immutable flags
  btrfs-progs: lowmem: check symlinks with append/immutable flags
  btrfs-progs: fsck-tests: add test case to check symlinks with bad
    flags

 check/main.c                                     |   7 +++++++
 check/mode-lowmem.c                              |  10 ++++++++++
 check/mode-lowmem.h                              |   1 +
 check/mode-original.h                            |   1 +
 .../034-bad-inode-flags/default_case.img         | Bin 0 -> 4096 bytes
 tests/fsck-tests/034-bad-inode-flags/test.sh     |  15 +++++++++++++++
 6 files changed, 34 insertions(+)
 create mode 100644 tests/fsck-tests/034-bad-inode-flags/default_case.img
 create mode 100755 tests/fsck-tests/034-bad-inode-flags/test.sh

-- 
2.17.0

[PATCH v2 1/3] btrfs-progs: check: check symlinks with append/immutable flags

[Su Yue]

Define new macro I_ERR_ODD_INODE_FLAGS to represents odd inode flags.

Symlinks should never have append/immutable flags.
While processing inodes, if found a symlink with append/immutable
flags, mark the inode record with I_ERR_ODD_INODE_FLAGS.

This is for original mode.

Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
---
 check/main.c          | 7 +++++++
 check/mode-original.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/check/main.c b/check/main.c
index 68da994f7ae0..c764fc011ded 100644
--- a/check/main.c
+++ b/check/main.c
@@ -576,6 +576,8 @@ static void print_inode_error(struct btrfs_root *root, struct inode_record *rec)
 		fprintf(stderr, ", link count wrong");
 	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
 		fprintf(stderr, ", orphan file extent");
+	if (errors & I_ERR_ODD_INODE_FLAGS)
+		fprintf(stderr, ", odd inode flags");
 	fprintf(stderr, "\n");
 	/* Print the orphan extents if needed */
 	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
@@ -805,6 +807,7 @@ static int process_inode_item(struct extent_buffer *eb,
 {
 	struct inode_record *rec;
 	struct btrfs_inode_item *item;
+	u64 flags;
 
 	rec = active_node->current;
 	BUG_ON(rec->ino != key->objectid || rec->refs > 1);
@@ -822,6 +825,10 @@ static int process_inode_item(struct extent_buffer *eb,
 	rec->found_inode_item = 1;
 	if (rec->nlink == 0)
 		rec->errors |= I_ERR_NO_ORPHAN_ITEM;
+	flags = btrfs_inode_flags(eb, item);
+	if (rec->imode & BTRFS_FT_SYMLINK &&
+	    flags & (BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND))
+		rec->errors |= I_ERR_ODD_INODE_FLAGS;
 	maybe_free_inode_rec(&active_node->inode_cache, rec);
 	return 0;
 }
diff --git a/check/mode-original.h b/check/mode-original.h
index 368de692fdd1..13cfa5b9e1b3 100644
--- a/check/mode-original.h
+++ b/check/mode-original.h
@@ -186,6 +186,7 @@ struct file_extent_hole {
 #define I_ERR_LINK_COUNT_WRONG		(1 << 13)
 #define I_ERR_FILE_EXTENT_ORPHAN	(1 << 14)
 #define I_ERR_FILE_EXTENT_TOO_LARGE	(1 << 15)
+#define I_ERR_ODD_INODE_FLAGS		(1 << 16)
 
 struct inode_record {
 	struct list_head backrefs;
-- 
2.17.0

[PATCH v2 2/3] btrfs-progs: lowmem: check symlinks with append/immutable flags

[Su Yue]

Define new error bit INODE_FLAGS_ERROR to represents invalid inode
flags error.

Symlinks should never have append/immutable flags set.
While checking inodes, if found a symlink with append/immutable
flags, report and record the inode flags error.

This is for lowmem mode.

Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
---
 check/mode-lowmem.c | 10 ++++++++++
 check/mode-lowmem.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
index 9890180d1d3c..f598bc364de4 100644
--- a/check/mode-lowmem.c
+++ b/check/mode-lowmem.c
@@ -2274,6 +2274,7 @@ static int check_inode_item(struct btrfs_root *root, struct btrfs_path *path)
 	struct btrfs_key last_key;
 	u64 inode_id;
 	u32 mode;
+	u64 flags;
 	u64 nlink;
 	u64 nbytes;
 	u64 isize;
@@ -2307,10 +2308,19 @@ static int check_inode_item(struct btrfs_root *root, struct btrfs_path *path)
 	isize = btrfs_inode_size(node, ii);
 	nbytes = btrfs_inode_nbytes(node, ii);
 	mode = btrfs_inode_mode(node, ii);
+	flags = btrfs_inode_flags(node, ii);
 	dir = imode_to_type(mode) == BTRFS_FT_DIR;
 	nlink = btrfs_inode_nlink(node, ii);
 	nodatasum = btrfs_inode_flags(node, ii) & BTRFS_INODE_NODATASUM;
 
+	if (mode & BTRFS_FT_SYMLINK &&
+	    flags & (BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND)) {
+		err |= INODE_FLAGS_ERROR;
+		error(
+"symlinks must never have immutable/append flags set, root %llu inode item %llu flags %llu may be corrupted",
+		      root->objectid, inode_id, flags);
+	}
+
 	while (1) {
 		btrfs_item_key_to_cpu(path->nodes[0], &last_key, path->slots[0]);
 		ret = btrfs_next_item(root, path);
diff --git a/check/mode-lowmem.h b/check/mode-lowmem.h
index e7ba62e2413e..91f7b6b1db53 100644
--- a/check/mode-lowmem.h
+++ b/check/mode-lowmem.h
@@ -44,6 +44,7 @@
 #define DIR_COUNT_AGAIN         (1<<20) /* DIR isize should be recalculated */
 #define BG_ACCOUNTING_ERROR     (1<<21) /* Block group accounting error */
 #define FATAL_ERROR             (1<<22) /* Fatal bit for errno */
+#define INODE_FLAGS_ERROR	(1<<23) /* Invalid inode flags */
 
 /*
  * Error bit for low memory mode check.
-- 
2.17.0

[PATCH v2 3/3] btrfs-progs: fsck-tests: add test case to check symlinks with bad flags

[Su Yue]

There are two bad symlinks in the test case.
One is with immutable attribute.
Another one is with append attribute.

Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
---
 .../034-bad-inode-flags/default_case.img         | Bin 0 -> 4096 bytes
 tests/fsck-tests/034-bad-inode-flags/test.sh     |  15 +++++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 tests/fsck-tests/034-bad-inode-flags/default_case.img
 create mode 100755 tests/fsck-tests/034-bad-inode-flags/test.sh

diff --git a/tests/fsck-tests/034-bad-inode-flags/default_case.img b/tests/fsck-tests/034-bad-inode-flags/default_case.img
new file mode 100644
index 0000000000000000000000000000000000000000..43a2a6f62d5ef3afd77f117b577a56ad6098ed19
GIT binary patch
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diff --git a/tests/fsck-tests/034-bad-inode-flags/test.sh b/tests/fsck-tests/034-bad-inode-flags/test.sh
new file mode 100755
index 000000000000..2225efb44e0e
--- /dev/null
+++ b/tests/fsck-tests/034-bad-inode-flags/test.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+# In order to confirm that 'btrfs check' supports checking symlinks
+# with immutable/append attributes.
+#
+
+source "$TEST_TOP/common"
+
+check_prereq btrfs
+
+check_image() {
+	run_mustfail "check should report errors about inode flags" \
+        $SUDO_HELPER "$TOP/btrfs" check "$1"
+}
+
+check_all_images
-- 
2.17.0

Re: [PATCH v2 1/3] btrfs-progs: check: check symlinks with append/immutable flags

[Qu Wenruo]

[-- Attachment #1.1: Type: text/plain, Size: 2334 bytes --]



On 2018年05月15日 09:33, Su Yue wrote:
> Define new macro I_ERR_ODD_INODE_FLAGS to represents odd inode flags.
> 
> Symlinks should never have append/immutable flags.
> While processing inodes, if found a symlink with append/immutable
> flags, mark the inode record with I_ERR_ODD_INODE_FLAGS.
> 
> This is for original mode.
> 
> Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>

Reviewed-by: Qu Wenruo <wqu@suse.com>

Thanks,
Qu

> ---
>  check/main.c          | 7 +++++++
>  check/mode-original.h | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/check/main.c b/check/main.c
> index 68da994f7ae0..c764fc011ded 100644
> --- a/check/main.c
> +++ b/check/main.c
> @@ -576,6 +576,8 @@ static void print_inode_error(struct btrfs_root *root, struct inode_record *rec)
>  		fprintf(stderr, ", link count wrong");
>  	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
>  		fprintf(stderr, ", orphan file extent");
> +	if (errors & I_ERR_ODD_INODE_FLAGS)
> +		fprintf(stderr, ", odd inode flags");
>  	fprintf(stderr, "\n");
>  	/* Print the orphan extents if needed */
>  	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
> @@ -805,6 +807,7 @@ static int process_inode_item(struct extent_buffer *eb,
>  {
>  	struct inode_record *rec;
>  	struct btrfs_inode_item *item;
> +	u64 flags;
>  
>  	rec = active_node->current;
>  	BUG_ON(rec->ino != key->objectid || rec->refs > 1);
> @@ -822,6 +825,10 @@ static int process_inode_item(struct extent_buffer *eb,
>  	rec->found_inode_item = 1;
>  	if (rec->nlink == 0)
>  		rec->errors |= I_ERR_NO_ORPHAN_ITEM;
> +	flags = btrfs_inode_flags(eb, item);
> +	if (rec->imode & BTRFS_FT_SYMLINK &&
> +	    flags & (BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND))
> +		rec->errors |= I_ERR_ODD_INODE_FLAGS;
>  	maybe_free_inode_rec(&active_node->inode_cache, rec);
>  	return 0;
>  }
> diff --git a/check/mode-original.h b/check/mode-original.h
> index 368de692fdd1..13cfa5b9e1b3 100644
> --- a/check/mode-original.h
> +++ b/check/mode-original.h
> @@ -186,6 +186,7 @@ struct file_extent_hole {
>  #define I_ERR_LINK_COUNT_WRONG		(1 << 13)
>  #define I_ERR_FILE_EXTENT_ORPHAN	(1 << 14)
>  #define I_ERR_FILE_EXTENT_TOO_LARGE	(1 << 15)
> +#define I_ERR_ODD_INODE_FLAGS		(1 << 16)
>  
>  struct inode_record {
>  	struct list_head backrefs;
> 


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Re: [PATCH v2 2/3] btrfs-progs: lowmem: check symlinks with append/immutable flags

[Qu Wenruo]

[-- Attachment #1.1: Type: text/plain, Size: 2394 bytes --]



On 2018年05月15日 09:33, Su Yue wrote:
> Define new error bit INODE_FLAGS_ERROR to represents invalid inode
> flags error.
> 
> Symlinks should never have append/immutable flags set.
> While checking inodes, if found a symlink with append/immutable
> flags, report and record the inode flags error.
> 
> This is for lowmem mode.
> 
> Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>

Reviewed-by: Qu Wenruo <wqu@suse.com>

Thanks,
Qu

> ---
>  check/mode-lowmem.c | 10 ++++++++++
>  check/mode-lowmem.h |  1 +
>  2 files changed, 11 insertions(+)
> 
> diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c
> index 9890180d1d3c..f598bc364de4 100644
> --- a/check/mode-lowmem.c
> +++ b/check/mode-lowmem.c
> @@ -2274,6 +2274,7 @@ static int check_inode_item(struct btrfs_root *root, struct btrfs_path *path)
>  	struct btrfs_key last_key;
>  	u64 inode_id;
>  	u32 mode;
> +	u64 flags;
>  	u64 nlink;
>  	u64 nbytes;
>  	u64 isize;
> @@ -2307,10 +2308,19 @@ static int check_inode_item(struct btrfs_root *root, struct btrfs_path *path)
>  	isize = btrfs_inode_size(node, ii);
>  	nbytes = btrfs_inode_nbytes(node, ii);
>  	mode = btrfs_inode_mode(node, ii);
> +	flags = btrfs_inode_flags(node, ii);
>  	dir = imode_to_type(mode) == BTRFS_FT_DIR;
>  	nlink = btrfs_inode_nlink(node, ii);
>  	nodatasum = btrfs_inode_flags(node, ii) & BTRFS_INODE_NODATASUM;
>  
> +	if (mode & BTRFS_FT_SYMLINK &&
> +	    flags & (BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND)) {
> +		err |= INODE_FLAGS_ERROR;
> +		error(
> +"symlinks must never have immutable/append flags set, root %llu inode item %llu flags %llu may be corrupted",
> +		      root->objectid, inode_id, flags);
> +	}
> +
>  	while (1) {
>  		btrfs_item_key_to_cpu(path->nodes[0], &last_key, path->slots[0]);
>  		ret = btrfs_next_item(root, path);
> diff --git a/check/mode-lowmem.h b/check/mode-lowmem.h
> index e7ba62e2413e..91f7b6b1db53 100644
> --- a/check/mode-lowmem.h
> +++ b/check/mode-lowmem.h
> @@ -44,6 +44,7 @@
>  #define DIR_COUNT_AGAIN         (1<<20) /* DIR isize should be recalculated */
>  #define BG_ACCOUNTING_ERROR     (1<<21) /* Block group accounting error */
>  #define FATAL_ERROR             (1<<22) /* Fatal bit for errno */
> +#define INODE_FLAGS_ERROR	(1<<23) /* Invalid inode flags */
>  
>  /*
>   * Error bit for low memory mode check.
> 


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Re: [PATCH v2 0/3] btrfs-progs: check: verify symlinks with append/immutable flags

[David Sterba]

On Tue, May 15, 2018 at 09:33:21AM +0800, Su Yue wrote:
> This patchset can be fetch from my github:
> https://github.com/Damenly/btrfs-progs/commits/odd_inode_flags
> It's based on devel.
> 
> symlinks should never have append/immutable attributes.
> This patchset enables btrfs check to verify such corruption.
> 
> PATCH[1] is for original mode.
> PATCH[2] is for original mode.
> 
> PATCH[3] adds a test image.
> For further use, the directory is called bad-inode-flags.
> 
> #issue 133
> 
> ---
> Changelog:
> v2:
>   Use "rec->errors |=" instead of "rec->errors =" in patch[1].
>   Define new error bit of invalid inode flags in lowmem mode.
>   Adjust print message in patch[2]. Thanks, Qu and Nikolay.
>   Rename test directory from odd-inode-flags to bad-inode-flags.
> 
> Su Yue (3):
>   btrfs-progs: check: check symlinks with append/immutable flags
>   btrfs-progs: lowmem: check symlinks with append/immutable flags
>   btrfs-progs: fsck-tests: add test case to check symlinks with bad
>     flags

Applied, thanks.

Re: [PATCH v2 1/3] btrfs-progs: check: check symlinks with append/immutable flags

[Misono Tomohiro]

On 2018/05/15 10:33, Su Yue wrote:
> Define new macro I_ERR_ODD_INODE_FLAGS to represents odd inode flags.
> 
> Symlinks should never have append/immutable flags.
> While processing inodes, if found a symlink with append/immutable
> flags, mark the inode record with I_ERR_ODD_INODE_FLAGS.
> 
> This is for original mode.
> 
> Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
> ---
>  check/main.c          | 7 +++++++
>  check/mode-original.h | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/check/main.c b/check/main.c
> index 68da994f7ae0..c764fc011ded 100644
> --- a/check/main.c
> +++ b/check/main.c
> @@ -576,6 +576,8 @@ static void print_inode_error(struct btrfs_root *root, struct inode_record *rec)
>  		fprintf(stderr, ", link count wrong");
>  	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
>  		fprintf(stderr, ", orphan file extent");
> +	if (errors & I_ERR_ODD_INODE_FLAGS)
> +		fprintf(stderr, ", odd inode flags");
>  	fprintf(stderr, "\n");
>  	/* Print the orphan extents if needed */
>  	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
> @@ -805,6 +807,7 @@ static int process_inode_item(struct extent_buffer *eb,
>  {
>  	struct inode_record *rec;
>  	struct btrfs_inode_item *item;
> +	u64 flags;
>  
>  	rec = active_node->current;
>  	BUG_ON(rec->ino != key->objectid || rec->refs > 1);
> @@ -822,6 +825,10 @@ static int process_inode_item(struct extent_buffer *eb,
>  	rec->found_inode_item = 1;
>  	if (rec->nlink == 0)
>  		rec->errors |= I_ERR_NO_ORPHAN_ITEM;
> +	flags = btrfs_inode_flags(eb, item);
> +	if (rec->imode & BTRFS_FT_SYMLINK &&

Hello,

I observed that this commit causes test-convert/009 in current kdave/devel branch.
Since rec->imode uses S_IFLNK (0xa000) for symbolic link and BTRFS_FT_SYMLINK is 7,
above statement does not work well. Shouldn't we use S_ISLNK(rec->imode) instead?

Thanks,
Tomohiro Misono

> +	    flags & (BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND))
> +		rec->errors |= I_ERR_ODD_INODE_FLAGS;
>  	maybe_free_inode_rec(&active_node->inode_cache, rec);
>  	return 0;
>  }
> diff --git a/check/mode-original.h b/check/mode-original.h
> index 368de692fdd1..13cfa5b9e1b3 100644
> --- a/check/mode-original.h
> +++ b/check/mode-original.h
> @@ -186,6 +186,7 @@ struct file_extent_hole {
>  #define I_ERR_LINK_COUNT_WRONG		(1 << 13)
>  #define I_ERR_FILE_EXTENT_ORPHAN	(1 << 14)
>  #define I_ERR_FILE_EXTENT_TOO_LARGE	(1 << 15)
> +#define I_ERR_ODD_INODE_FLAGS		(1 << 16)
>  
>  struct inode_record {
>  	struct list_head backrefs;
> 

Re: [PATCH v2 1/3] btrfs-progs: check: check symlinks with append/immutable flags

[Su Yue]

On 06/07/2018 10:45 AM, Misono Tomohiro wrote:
> 
> 
> On 2018/05/15 10:33, Su Yue wrote:
>> Define new macro I_ERR_ODD_INODE_FLAGS to represents odd inode flags.
>>
>> Symlinks should never have append/immutable flags.
>> While processing inodes, if found a symlink with append/immutable
>> flags, mark the inode record with I_ERR_ODD_INODE_FLAGS.
>>
>> This is for original mode.
>>
>> Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com>
>> ---
>>  check/main.c          | 7 +++++++
>>  check/mode-original.h | 1 +
>>  2 files changed, 8 insertions(+)
>>
>> diff --git a/check/main.c b/check/main.c
>> index 68da994f7ae0..c764fc011ded 100644
>> --- a/check/main.c
>> +++ b/check/main.c
>> @@ -576,6 +576,8 @@ static void print_inode_error(struct btrfs_root *root, struct inode_record *rec)
>>  		fprintf(stderr, ", link count wrong");
>>  	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
>>  		fprintf(stderr, ", orphan file extent");
>> +	if (errors & I_ERR_ODD_INODE_FLAGS)
>> +		fprintf(stderr, ", odd inode flags");
>>  	fprintf(stderr, "\n");
>>  	/* Print the orphan extents if needed */
>>  	if (errors & I_ERR_FILE_EXTENT_ORPHAN)
>> @@ -805,6 +807,7 @@ static int process_inode_item(struct extent_buffer *eb,
>>  {
>>  	struct inode_record *rec;
>>  	struct btrfs_inode_item *item;
>> +	u64 flags;
>>  
>>  	rec = active_node->current;
>>  	BUG_ON(rec->ino != key->objectid || rec->refs > 1);
>> @@ -822,6 +825,10 @@ static int process_inode_item(struct extent_buffer *eb,
>>  	rec->found_inode_item = 1;
>>  	if (rec->nlink == 0)
>>  		rec->errors |= I_ERR_NO_ORPHAN_ITEM;
>> +	flags = btrfs_inode_flags(eb, item);
>> +	if (rec->imode & BTRFS_FT_SYMLINK &&
> 
> Hello,
> 
> I observed that this commit causes test-convert/009 in current kdave/devel branch.
> Since rec->imode uses S_IFLNK (0xa000) for symbolic link and BTRFS_FT_SYMLINK is 7,
> above statement does not work well. Shouldn't we use S_ISLNK(rec->imode) instead?
> 

Oh.. Yep, my bad.
Since the test case is created by hand, the whole patchset should be
modified in next version.
Thanks a lot.

Su

> Thanks,
> Tomohiro Misono
> 
>> +	    flags & (BTRFS_INODE_IMMUTABLE | BTRFS_INODE_APPEND))
>> +		rec->errors |= I_ERR_ODD_INODE_FLAGS;
>>  	maybe_free_inode_rec(&active_node->inode_cache, rec);
>>  	return 0;
>>  }
>> diff --git a/check/mode-original.h b/check/mode-original.h
>> index 368de692fdd1..13cfa5b9e1b3 100644
>> --- a/check/mode-original.h
>> +++ b/check/mode-original.h
>> @@ -186,6 +186,7 @@ struct file_extent_hole {
>>  #define I_ERR_LINK_COUNT_WRONG		(1 << 13)
>>  #define I_ERR_FILE_EXTENT_ORPHAN	(1 << 14)
>>  #define I_ERR_FILE_EXTENT_TOO_LARGE	(1 << 15)
>> +#define I_ERR_ODD_INODE_FLAGS		(1 << 16)
>>  
>>  struct inode_record {
>>  	struct list_head backrefs;
>>

Re: [PATCH v2 0/3] btrfs-progs: check: verify symlinks with append/immutable flags

[Su Yue]

On 05/31/2018 07:40 PM, David Sterba wrote:
> On Tue, May 15, 2018 at 09:33:21AM +0800, Su Yue wrote:
>> This patchset can be fetch from my github:
>> https://github.com/Damenly/btrfs-progs/commits/odd_inode_flags
>> It's based on devel.
>>
>> symlinks should never have append/immutable attributes.
>> This patchset enables btrfs check to verify such corruption.
>>
>> PATCH[1] is for original mode.
>> PATCH[2] is for original mode.
>>
>> PATCH[3] adds a test image.
>> For further use, the directory is called bad-inode-flags.
>>
>> #issue 133
>>
>> ---
>> Changelog:
>> v2:
>>    Use "rec->errors |=" instead of "rec->errors =" in patch[1].
>>    Define new error bit of invalid inode flags in lowmem mode.
>>    Adjust print message in patch[2]. Thanks, Qu and Nikolay.
>>    Rename test directory from odd-inode-flags to bad-inode-flags.
>>
>> Su Yue (3):
>>    btrfs-progs: check: check symlinks with append/immutable flags
>>    btrfs-progs: lowmem: check symlinks with append/immutable flags
>>    btrfs-progs: fsck-tests: add test case to check symlinks with bad
>>      flags
> 
> Applied, thanks.

Hi David,
	Could you replace this patchset with new V3? It fixes the problem 
reported by Misono.

Thanks,
Su

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> 

Re: [PATCH v2 0/3] btrfs-progs: check: verify symlinks with append/immutable flags

[David Sterba]

On Thu, Jun 07, 2018 at 02:59:23PM +0800, Su Yue wrote:
> 	Could you replace this patchset with new V3? It fixes the problem 
> reported by Misono.

Done, thanks.