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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-04-27 11:38:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-04-27 11:38:05 -0700 |
| commit | 19ac4474203863a8141663d73d5976fe25464bfd (patch) | |
| tree | 2a2435b52c0dab6a36f77d293d01498b03f25be3 | |
| parent | f56fc7bdaa22e7b2fac18de430db8195d2dfd7bd (diff) | |
| parent | 8179a101eb5f4ef0ac9a915fcea9a9d3109efa90 (diff) | |
| download | linux-stable-19ac4474203863a8141663d73d5976fe25464bfd.tar.gz linux-stable-19ac4474203863a8141663d73d5976fe25464bfd.tar.bz2 linux-stable-19ac4474203863a8141663d73d5976fe25464bfd.zip | |
Merge tag 'ceph-for-4.11-rc9' of git://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A fix for a kernel stack overflow bug in ceph setattr code, marked for
stable"
* tag 'ceph-for-4.11-rc9' of git://github.com/ceph/ceph-client:
ceph: fix recursion between ceph_set_acl() and __ceph_setattr()
| -rw-r--r-- | fs/ceph/inode.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index d449e1c03cbd..d3119fe3ab45 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2071,11 +2071,6 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) if (inode_dirty_flags) __mark_inode_dirty(inode, inode_dirty_flags); - if (ia_valid & ATTR_MODE) { - err = posix_acl_chmod(inode, attr->ia_mode); - if (err) - goto out_put; - } if (mask) { req->r_inode = inode; @@ -2089,13 +2084,11 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) ceph_cap_string(dirtied), mask); ceph_mdsc_put_request(req); - if (mask & CEPH_SETATTR_SIZE) - __ceph_do_pending_vmtruncate(inode); - ceph_free_cap_flush(prealloc_cf); - return err; -out_put: - ceph_mdsc_put_request(req); ceph_free_cap_flush(prealloc_cf); + + if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) + __ceph_do_pending_vmtruncate(inode); + return err; } @@ -2114,7 +2107,12 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) if (err != 0) return err; - return __ceph_setattr(inode, attr); + err = __ceph_setattr(inode, attr); + + if (err >= 0 && (attr->ia_valid & ATTR_MODE)) + err = posix_acl_chmod(inode, attr->ia_mode); + + return err; } /* |