* FAILED: patch "[PATCH] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and" failed to apply to 6.6-stable tree
@ 2026-09-29 6:44 gregkh
2026-09-29 13:31 ` [PATCH 6.6.y 1/3] fs/ntfs3: remove atomic_open Sasha Levin
0 siblings, 1 reply; 4+ messages in thread
From: gregkh @ 2026-09-29 6:44 UTC (permalink / raw)
To: brauner, jack; +Cc: stable
The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 1abd643f3783ea8f8e273c18697ff0413aa92dc7
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026092904-porthole-attire-bdfd@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..'
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 1abd643f3783ea8f8e273c18697ff0413aa92dc7 Mon Sep 17 00:00:00 2001
From: Christian Brauner <brauner@kernel.org>
Date: Wed, 9 Sep 2026 11:03:18 +0200
Subject: [PATCH] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and
murder syzbot's "WARNING in do_new_mount" saga
ntfs_create_inode() creates a new inode via ntfs_new_inode(). It hashes
it with insert_inode_locked() and so it's marked as I_NEW until
unlock_new_inode().
ntfs 3 calls d_instantiate() in between though... Since the dentry was
already hashed by the lookup before the create any path walk finds it
without touching the parent's i_rwsem and so can lock the inode.
If the inode is a directory unlock_new_inode() calls
lockdep_annotate_inode_mutex_key() and marks i_rwsem with the
i_mutex_dir_key class.
That resets the count and the owner of a lock somebody else may already
hold by now...
syzbot has been spamming us with the same godforsaken bug
"WARNING in do_new_mount"
since 2023. I can't take it anymore so I went looking. Afaict, syzbot's
executor chdirs into a freshly mounted ntfs3 image, creates a
directory and then mounts some pseudofs on it. Everytime the mkdir()
takes longer than syzbot waits mount() runs concurrently:
mkdir("./sys") mount(NULL, "./sys", "sysfs")
ntfs_create_inode()
d_instantiate()
user_path_at() finds the dentry
do_lock_mount()
inode_lock(inode)
namespace_lock()
unlock_new_inode()
lockdep_annotate_inode_mutex_key()
init_rwsem(&inode->i_rwsem)
unlock_mount()
inode_unlock(inode)
The mount side then releases a lock that according to the rwsem nobody
holds:
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && ...):
count = 0x0, magic = 0xffff888043a854e8, owner = 0x0,
curr 0xffff888000244880, list empty
WARNING: CPU: 0 PID: 5346 at kernel/locking/rwsem.c:1368 __up_write
Call Trace:
inode_unlock include/linux/fs.h:877 [inline]
unlock_mount fs/namespace.c:2892 [inline]
do_new_mount_fc fs/namespace.c:3828 [inline]
do_new_mount+0x777/0xa40 fs/namespace.c:3887
On PREEMPT_RT the same thing shows up as
DEBUG_LOCKS_WARN_ON(rt_mutex_owner(lock) != current)
WARNING: kernel/locking/rtmutex_common.h:193 at rt_mutex_slowunlock
The up_write() underflows the reset count. A following inode_lock() on
that directory then never returns. A path walk into the new directory
racing with the mkdir() corrupts the lock the same way via
inode_lock_shared() in lookup_slow().
Switch to d_instantiate_new() and drop the trailing unlock_new_inode().
All error paths bail out before that point with I_NEW still set and
keep using discard_new_inode().
May we never see this fscking bug report again.
Link: https://patch.msgid.link/20260909-work-ntfs3-d_instantiate_new-v1-1-2db697162ce8@kernel.org
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org # v5.15+
Reported-by: syzbot+2a13ad6914e6fcec716c@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/6a9beced.a5e650b3.26d8a.000b.GAE@google.com
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 56b4f6469a28..4ac26c80bd34 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1866,10 +1866,10 @@ int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
goto out6;
/*
- * Call 'd_instantiate' after inode->i_op is set
+ * Call 'd_instantiate_new' after inode->i_op is set
* but before finish_open.
*/
- d_instantiate(dentry, inode);
+ d_instantiate_new(dentry, inode);
/* Set original time. inode times (i_ctime) may be changed in ntfs_init_acl. */
inode_set_atime_to_ts(inode, ni->i_crtime);
@@ -1917,9 +1917,6 @@ int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
if (!fnd)
ni_unlock(dir_ni);
- if (!err)
- unlock_new_inode(inode);
-
return err;
}
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 6.6.y 1/3] fs/ntfs3: remove atomic_open
2026-09-29 6:44 FAILED: patch "[PATCH] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and" failed to apply to 6.6-stable tree gregkh
@ 2026-09-29 13:31 ` Sasha Levin
2026-09-29 13:31 ` [PATCH 6.6.y 2/3] fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode Sasha Levin
2026-09-29 13:31 ` [PATCH 6.6.y 3/3] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and murder syzbot's "WARNING in do_new_mount" saga Sasha Levin
0 siblings, 2 replies; 4+ messages in thread
From: Sasha Levin @ 2026-09-29 13:31 UTC (permalink / raw)
To: stable; +Cc: Jeff Layton, Konstantin Komarov, Sasha Levin
From: Jeff Layton <jlayton@kernel.org>
[ Upstream commit 93b4d70f6a4129fcfad18deae248bf89c129d1b5 ]
atomic_open is an optional VFS operation, and is primarily for network
filesystems. NFS (for instance) can just send an open call for the last
path component rather than doing a lookup and then having to follow that
up with an open when it doesn't have a dentry in cache.
ntfs3 is a local filesystem however, and its atomic_open just does a
typical lookup + open, but in a convoluted way. atomic_open will also
make directory leases more difficult to implement on the filesystem.
Remove ntfs_atomic_open.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Backport preparation for 1abd643f3783ea8f8e273c18697ff0413aa92dc7:
Remove the stable version of ntfs_atomic_open(), which still uses
mnt_idmap(file->f_path.mnt), while retaining the surrounding stable fixes.
Fold in the error-return conversion from c935c66878867 for
ntfs_create_inode(), its declaration, and its four remaining callers.
Keep the existing file allocation behavior; the unrelated resident-file
creation change from that commit is not needed here.
Use the existing inode timestamp setters when restoring creation times.
These equivalent assignments and the error-return cleanup provide the
context needed for the target to apply unchanged. Keep d_instantiate()
and the successful unlock_new_inode() here for the target to replace.
Stable-dep-of: 1abd643f3783 ("fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and murder syzbot's "WARNING in do_new_mount" saga")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ntfs3/inode.c | 28 +++++------
fs/ntfs3/namei.c | 121 +++------------------------------------------
fs/ntfs3/ntfs_fs.h | 9 ++--
3 files changed, 25 insertions(+), 133 deletions(-)
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index fff604cd95279..ce08d44d0d250 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1230,15 +1230,13 @@ ntfs_create_reparse_buffer(struct ntfs_sb_info *sbi, const char *symname,
* - ntfs_mknod
* - ntfs_symlink
* - ntfs_mkdir
- * - ntfs_atomic_open
*
- * NOTE: if fnd != NULL (ntfs_atomic_open) then @dir is locked
+ * NOTE: if fnd != NULL then @dir is locked
*/
-struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry,
- const struct cpu_str *uni, umode_t mode,
- dev_t dev, const char *symname, u32 size,
- struct ntfs_fnd *fnd)
+int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
+ struct dentry *dentry, const struct cpu_str *uni,
+ umode_t mode, dev_t dev, const char *symname, u32 size,
+ struct ntfs_fnd *fnd)
{
int err;
struct super_block *sb = dir->i_sb;
@@ -1705,9 +1703,11 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
d_instantiate(dentry, inode);
/* Set original time. inode times (i_ctime) may be changed in ntfs_init_acl. */
- inode->i_atime = inode->i_mtime =
- inode_set_ctime_to_ts(inode, ni->i_crtime);
- dir->i_mtime = inode_set_ctime_to_ts(dir, ni->i_crtime);
+ inode_set_atime_to_ts(inode, ni->i_crtime);
+ inode_set_ctime_to_ts(inode, ni->i_crtime);
+ inode_set_mtime_to_ts(inode, ni->i_crtime);
+ inode_set_mtime_to_ts(dir, ni->i_crtime);
+ inode_set_ctime_to_ts(dir, ni->i_crtime);
mark_inode_dirty(dir);
mark_inode_dirty(inode);
@@ -1748,12 +1748,10 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
if (!fnd)
ni_unlock(dir_ni);
- if (err)
- return ERR_PTR(err);
-
- unlock_new_inode(inode);
+ if (!err)
+ unlock_new_inode(inode);
- return inode;
+ return err;
}
int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c
index dc41b80cfc584..f435be439a37a 100644
--- a/fs/ntfs3/namei.c
+++ b/fs/ntfs3/namei.c
@@ -107,12 +107,8 @@ static struct dentry *ntfs_lookup(struct inode *dir, struct dentry *dentry,
static int ntfs_create(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, bool excl)
{
- struct inode *inode;
-
- inode = ntfs_create_inode(idmap, dir, dentry, NULL, S_IFREG | mode, 0,
- NULL, 0, NULL);
-
- return IS_ERR(inode) ? PTR_ERR(inode) : 0;
+ return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFREG | mode, 0,
+ NULL, 0, NULL);
}
/*
@@ -123,12 +119,8 @@ static int ntfs_create(struct mnt_idmap *idmap, struct inode *dir,
static int ntfs_mknod(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode, dev_t rdev)
{
- struct inode *inode;
-
- inode = ntfs_create_inode(idmap, dir, dentry, NULL, mode, rdev, NULL, 0,
- NULL);
-
- return IS_ERR(inode) ? PTR_ERR(inode) : 0;
+ return ntfs_create_inode(idmap, dir, dentry, NULL, mode, rdev, NULL, 0,
+ NULL);
}
/*
@@ -200,15 +192,12 @@ static int ntfs_symlink(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, const char *symname)
{
u32 size = strlen(symname);
- struct inode *inode;
if (unlikely(ntfs3_forced_shutdown(dir->i_sb)))
return -EIO;
- inode = ntfs_create_inode(idmap, dir, dentry, NULL, S_IFLNK | 0777, 0,
- symname, size, NULL);
-
- return IS_ERR(inode) ? PTR_ERR(inode) : 0;
+ return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFLNK | 0777, 0,
+ symname, size, NULL);
}
/*
@@ -217,12 +206,8 @@ static int ntfs_symlink(struct mnt_idmap *idmap, struct inode *dir,
static int ntfs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
struct dentry *dentry, umode_t mode)
{
- struct inode *inode;
-
- inode = ntfs_create_inode(idmap, dir, dentry, NULL, S_IFDIR | mode, 0,
- NULL, 0, NULL);
-
- return IS_ERR(inode) ? PTR_ERR(inode) : 0;
+ return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFDIR | mode, 0,
+ NULL, 0, NULL);
}
/*
@@ -353,95 +338,6 @@ static int ntfs_rename(struct mnt_idmap *idmap, struct inode *dir,
return err;
}
-/*
- * ntfs_atomic_open
- *
- * inode_operations::atomic_open
- */
-static int ntfs_atomic_open(struct inode *dir, struct dentry *dentry,
- struct file *file, u32 flags, umode_t mode)
-{
- int err;
- struct inode *inode;
- struct ntfs_fnd *fnd = NULL;
- struct ntfs_inode *ni = ntfs_i(dir);
- struct dentry *d = NULL;
- struct cpu_str *uni = __getname();
- bool locked = false;
-
- if (!uni)
- return -ENOMEM;
-
- err = ntfs_nls_to_utf16(ni->mi.sbi, dentry->d_name.name,
- dentry->d_name.len, uni, NTFS_NAME_LEN,
- UTF16_HOST_ENDIAN);
- if (err < 0)
- goto out;
-
-#ifdef CONFIG_NTFS3_FS_POSIX_ACL
- if (IS_POSIXACL(dir)) {
- /*
- * Load in cache current acl to avoid ni_lock(dir):
- * ntfs_create_inode -> ntfs_init_acl -> posix_acl_create ->
- * ntfs_get_acl -> ntfs_get_acl_ex -> ni_lock
- */
- struct posix_acl *p = get_inode_acl(dir, ACL_TYPE_DEFAULT);
-
- if (IS_ERR(p)) {
- err = PTR_ERR(p);
- goto out;
- }
- posix_acl_release(p);
- }
-#endif
-
- if (d_in_lookup(dentry)) {
- ni_lock_dir(ni);
- locked = true;
- fnd = fnd_get();
- if (!fnd) {
- err = -ENOMEM;
- goto out1;
- }
-
- d = d_splice_alias(dir_search_u(dir, uni, fnd), dentry);
- if (IS_ERR(d)) {
- err = PTR_ERR(d);
- d = NULL;
- goto out2;
- }
-
- if (d)
- dentry = d;
- }
-
- if (!(flags & O_CREAT) || d_really_is_positive(dentry)) {
- err = finish_no_open(file, d);
- goto out2;
- }
-
- file->f_mode |= FMODE_CREATED;
-
- /*
- * fnd contains tree's path to insert to.
- * If fnd is not NULL then dir is locked.
- */
- inode = ntfs_create_inode(mnt_idmap(file->f_path.mnt), dir, dentry, uni,
- mode, 0, NULL, 0, fnd);
- err = IS_ERR(inode) ? PTR_ERR(inode) :
- finish_open(file, dentry, ntfs_file_open);
- dput(d);
-
-out2:
- fnd_put(fnd);
-out1:
- if (locked)
- ni_unlock(ni);
-out:
- __putname(uni);
- return err;
-}
-
struct dentry *ntfs3_get_parent(struct dentry *child)
{
struct inode *inode = d_inode(child);
@@ -607,7 +503,6 @@ const struct inode_operations ntfs_dir_inode_operations = {
.setattr = ntfs3_setattr,
.getattr = ntfs_getattr,
.listxattr = ntfs_listxattr,
- .atomic_open = ntfs_atomic_open,
.fiemap = ntfs_fiemap,
};
diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h
index 5e7536ad0b94c..acfa2a2f7e517 100644
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -714,11 +714,10 @@ int ntfs_sync_inode(struct inode *inode);
int ntfs_flush_inodes(struct super_block *sb, struct inode *i1,
struct inode *i2);
int inode_write_data(struct inode *inode, const void *data, size_t bytes);
-struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
- struct dentry *dentry,
- const struct cpu_str *uni, umode_t mode,
- dev_t dev, const char *symname, u32 size,
- struct ntfs_fnd *fnd);
+int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
+ struct dentry *dentry, const struct cpu_str *uni,
+ umode_t mode, dev_t dev, const char *symname, u32 size,
+ struct ntfs_fnd *fnd);
int ntfs_link_inode(struct inode *inode, struct dentry *dentry);
int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry);
void ntfs_evict_inode(struct inode *inode);
--
2.53.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 6.6.y 2/3] fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode
2026-09-29 13:31 ` [PATCH 6.6.y 1/3] fs/ntfs3: remove atomic_open Sasha Levin
@ 2026-09-29 13:31 ` Sasha Levin
2026-09-29 13:31 ` [PATCH 6.6.y 3/3] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and murder syzbot's "WARNING in do_new_mount" saga Sasha Levin
1 sibling, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2026-09-29 13:31 UTC (permalink / raw)
To: stable; +Cc: Konstantin Komarov, Al Viro, Sasha Levin
From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
[ Upstream commit c935c66878867dc87c36c36b21d35d7e7f08adec ]
As Al Viro correctly pointed out, there is no need to return
the whole structure to check the error.
https://lore.kernel.org/ntfs3/20240322023515.GK538574@ZenIV/
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Stable-dep-of: 1abd643f3783 ("fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and murder syzbot's "WARNING in do_new_mount" saga")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ntfs3/inode.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index ce08d44d0d250..e4cf4e647d037 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1261,6 +1261,9 @@ int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
struct REPARSE_DATA_BUFFER *rp = NULL;
bool rp_inserted = false;
+ /* New file will be resident or non resident. */
+ const bool new_file_resident = 1;
+
if (!fnd)
ni_lock_dir(dir_ni);
@@ -1500,7 +1503,7 @@ int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
attr->size = cpu_to_le32(SIZEOF_RESIDENT);
attr->name_off = SIZEOF_RESIDENT_LE;
attr->res.data_off = SIZEOF_RESIDENT_LE;
- } else if (S_ISREG(mode)) {
+ } else if (!new_file_resident && S_ISREG(mode)) {
/*
* Regular file. Create empty non resident data attribute.
*/
--
2.53.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 6.6.y 3/3] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and murder syzbot's "WARNING in do_new_mount" saga
2026-09-29 13:31 ` [PATCH 6.6.y 1/3] fs/ntfs3: remove atomic_open Sasha Levin
2026-09-29 13:31 ` [PATCH 6.6.y 2/3] fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode Sasha Levin
@ 2026-09-29 13:31 ` Sasha Levin
1 sibling, 0 replies; 4+ messages in thread
From: Sasha Levin @ 2026-09-29 13:31 UTC (permalink / raw)
To: stable
Cc: Christian Brauner, Jan Kara, syzbot+2a13ad6914e6fcec716c,
Sasha Levin
From: Christian Brauner <brauner@kernel.org>
[ Upstream commit 1abd643f3783ea8f8e273c18697ff0413aa92dc7 ]
ntfs_create_inode() creates a new inode via ntfs_new_inode(). It hashes
it with insert_inode_locked() and so it's marked as I_NEW until
unlock_new_inode().
ntfs 3 calls d_instantiate() in between though... Since the dentry was
already hashed by the lookup before the create any path walk finds it
without touching the parent's i_rwsem and so can lock the inode.
If the inode is a directory unlock_new_inode() calls
lockdep_annotate_inode_mutex_key() and marks i_rwsem with the
i_mutex_dir_key class.
That resets the count and the owner of a lock somebody else may already
hold by now...
syzbot has been spamming us with the same godforsaken bug
"WARNING in do_new_mount"
since 2023. I can't take it anymore so I went looking. Afaict, syzbot's
executor chdirs into a freshly mounted ntfs3 image, creates a
directory and then mounts some pseudofs on it. Everytime the mkdir()
takes longer than syzbot waits mount() runs concurrently:
mkdir("./sys") mount(NULL, "./sys", "sysfs")
ntfs_create_inode()
d_instantiate()
user_path_at() finds the dentry
do_lock_mount()
inode_lock(inode)
namespace_lock()
unlock_new_inode()
lockdep_annotate_inode_mutex_key()
init_rwsem(&inode->i_rwsem)
unlock_mount()
inode_unlock(inode)
The mount side then releases a lock that according to the rwsem nobody
holds:
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && ...):
count = 0x0, magic = 0xffff888043a854e8, owner = 0x0,
curr 0xffff888000244880, list empty
WARNING: CPU: 0 PID: 5346 at kernel/locking/rwsem.c:1368 __up_write
Call Trace:
inode_unlock include/linux/fs.h:877 [inline]
unlock_mount fs/namespace.c:2892 [inline]
do_new_mount_fc fs/namespace.c:3828 [inline]
do_new_mount+0x777/0xa40 fs/namespace.c:3887
On PREEMPT_RT the same thing shows up as
DEBUG_LOCKS_WARN_ON(rt_mutex_owner(lock) != current)
WARNING: kernel/locking/rtmutex_common.h:193 at rt_mutex_slowunlock
The up_write() underflows the reset count. A following inode_lock() on
that directory then never returns. A path walk into the new directory
racing with the mkdir() corrupts the lock the same way via
inode_lock_shared() in lookup_slow().
Switch to d_instantiate_new() and drop the trailing unlock_new_inode().
All error paths bail out before that point with I_NEW still set and
keep using discard_new_inode().
May we never see this fscking bug report again.
Link: https://patch.msgid.link/20260909-work-ntfs3-d_instantiate_new-v1-1-2db697162ce8@kernel.org
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org # v5.15+
Reported-by: syzbot+2a13ad6914e6fcec716c@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/6a9beced.a5e650b3.26d8a.000b.GAE@google.com
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ntfs3/inode.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index e4cf4e647d037..aa27ca70ee5b2 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1700,10 +1700,10 @@ int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
goto out6;
/*
- * Call 'd_instantiate' after inode->i_op is set
+ * Call 'd_instantiate_new' after inode->i_op is set
* but before finish_open.
*/
- d_instantiate(dentry, inode);
+ d_instantiate_new(dentry, inode);
/* Set original time. inode times (i_ctime) may be changed in ntfs_init_acl. */
inode_set_atime_to_ts(inode, ni->i_crtime);
@@ -1751,9 +1751,6 @@ int ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir,
if (!fnd)
ni_unlock(dir_ni);
- if (!err)
- unlock_new_inode(inode);
-
return err;
}
--
2.53.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2026-09-29 13:31 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2026-09-29 6:44 FAILED: patch "[PATCH] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and" failed to apply to 6.6-stable tree gregkh
2026-09-29 13:31 ` [PATCH 6.6.y 1/3] fs/ntfs3: remove atomic_open Sasha Levin
2026-09-29 13:31 ` [PATCH 6.6.y 2/3] fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode Sasha Levin
2026-09-29 13:31 ` [PATCH 6.6.y 3/3] fs/ntfs3: use d_instantiate_new() in ntfs_create_inode() and murder syzbot's "WARNING in do_new_mount" saga Sasha Levin
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