On 28/02/2023 21:29, Jeff Layton wrote:

On Tue, 2023-02-28 at 20:55 +0800, xiubli@redhat.com wrote:

...

From: Xiubo Li xiubli@redhat.com

If the xattr's value size is long enough the kernel will warn and then will fail the xfstests test case.

Just print part of the value string if it's too long.

Cc: stable@vger.kernel.org URL: https://tracker.ceph.com/issues/58404 Signed-off-by: Xiubo Li xiubli@redhat.com

---

fs/ceph/xattr.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index b10d459c2326..6638bb0ec10f 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -561,6 +561,7 @@ static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode, return NULL; } +#define XATTR_MAX_VAL 256 static int __set_xattr(struct ceph_inode_info *ci, const char *name, int name_len, const char *val, int val_len, @@ -654,8 +655,10 @@ static int __set_xattr(struct ceph_inode_info *ci, dout("__set_xattr_val p=%p\n", p); }

• dout("__set_xattr_val added %llx.%llx xattr %p %.*s=%.*s\n",

•     ceph_vinop(&ci->netfs.inode), xattr, name_len, name, val_len, val);
  

• dout("__set_xattr_val added %llx.%llx xattr %p %.*s=%.*s%s\n",

•     ceph_vinop(&ci->netfs.inode), xattr, name_len, name,
  

•     val_len > XATTR_MAX_VAL ? XATTR_MAX_VAL : val_len, val,
  

min(val_len, XATTR_MAX_VAL), val,...

...

•     val_len > XATTR_MAX_VAL ? "..." : "");
  

return 0; } @@ -681,8 +684,10 @@ static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci, else if (c > 0) p = &(*p)->rb_right; else {

• 	dout("__get_xattr %s: found %.*s\n", name,
  

• 	     xattr->val_len, xattr->val);
  

• 	int len = xattr->val_len;
  

• 	dout("__get_xattr %s: found %.*s%s\n", name,
  

• 	     len > XATTR_MAX_VAL ? XATTR_MAX_VAL : len,
  

		min(len, XATTR_MAX_VAL)

Cool. I will revise this.

Thanks Jeff.

...

• 	     xattr->val, len > XATTR_MAX_VAL ? "..." : "");
  return xattr;
  

  } }