4.15: ovl_get_origin_fh detects zero sized files on lower paths and treats these a special zero sized "copied up but origin unknown" magic.
[ 25.442916] ovl_check_origin: etc/.pwd.lock 2 [ 25.442918] ovl_get_origin_fh: 104 etc/.pwd.lock [ 25.442919] ovl_get_origin_fh: 107 res=0 [ 25.442920] ovl_get_origin_fh: 117 res == 0, return NULL [ 25.442921] ovl_get_origin: 179 fh = (null) 1 [ 25.442922] ovl_get_origin_fh: 104 etc/.pwd.lock [ 25.442922] ovl_get_origin_fh: 107 res=0 [ 25.442923] ovl_get_origin_fh: 117 res == 0, return NULL [ 25.442923] ovl_get_origin: 179 fh = (null) 1 5.3: the lower is / and hence is a directory hence the S_IFDIR origin return. [ 33.320630] ovl_get_fh: 112 dentry: etc/.pwd.lock name: trusted.overlay.origin [ 33.320632] ovl_get_fh: 115: res = 29 [ 33.320634] ovl_get_fh: 152: return fh = 000000006e71855c [ 33.320634] ovl_check_origin: 413 fh = 000000006e71855c [ 33.320635] ovl_check_origin_fh: 354 upperdentry = etc/.pwd.lock [ 33.320635] ovl_decode_real_fh: 174 [ 33.320769] ovl_decode_real_fh: 211 return dentry (OK) [ 33.320769] ovl_check_origin_fh: 360, i=0, origin = / [ 33.320770] ovl_check_origin_fh: level=0 upper: etc/.pwd.lock 100600, lower: / 40755 [ 33.320770] ovl_check_origin_fh: 380 goto invalid [ 33.320771] overlayfs: invalid origin (etc/.pwd.lock, ftype=8000, origin ftype=4000). [ 33.320773] ovl_check_origin: 422 err = -5 [ 33.320774] ovl_check_origin: 429, return -5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824407 Title: remount of multilower moved pivoted-root overlayfs root, results in I/O errors on some modified files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1824407/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
