Messages in this thread Patch in this message | | | From | Hillf Danton <> | Subject | Re: [syzbot] [fs?] WARNING in stashed_dentry_prune | Date | Wed, 13 Mar 2024 20:42:04 +0800 |
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On Wed, 13 Mar 2024 03:23:25 -0700 > syzbot found the following issue on: > > HEAD commit: 0f1a876682f0 Merge tag 'vfs-6.9.uuid' of git://git.kernel... > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=116b38d1180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/fs/libfs.c +++ y/fs/libfs.c @@ -2012,6 +2012,8 @@ static struct dentry *prepare_anon_dentr dentry = d_alloc_anon(sb); if (!dentry) return ERR_PTR(-ENOMEM); + /* Store address of location where dentry's supposed to be stashed. */ + dentry->d_fsdata = stashed; inode = new_inode_pseudo(sb); if (!inode) { @@ -2029,9 +2031,6 @@ static struct dentry *prepare_anon_dentr WARN_ON_ONCE(!S_ISREG(inode->i_mode)); WARN_ON_ONCE(!IS_IMMUTABLE(inode)); - /* Store address of location where dentry's supposed to be stashed. */ - dentry->d_fsdata = stashed; - /* @data is now owned by the fs */ d_instantiate(dentry, inode); return dentry; --
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