https://bugzilla.novell.com/show_bug.cgi?id=887046 https://bugzilla.novell.com/show_bug.cgi?id=887046#c16 Takashi Iwai <tiwai@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tiwai@suse.com --- Comment #16 from Takashi Iwai <tiwai@suse.com> 2014-07-25 12:30:53 UTC --- I stumbled upon this bug and took a bit deeper look. The issue has existed since long time ago; 3.11.x already shows the very same problem when quota is enabled on btrfs. It gives Oops sooner or later in the same code path (list_del() in the clean up prefs_delayed list in find_parent_nodes()). I quickly bisected and resulted in the commit: ed8c4913da4951957bf8afc788522788881ff405 Btrfs: make sure the backref walker catches all refs to our extent Although I don't fully understand why this hits only 32bit kernel, reverting this commit fixes the problem, up to 3.14. However, 3.15 introduced yet another place triggering the very same problem. Again bisected, and hit to the commit: 4485386853454f184235c8a973b29fa7fa522eb1 Btrfs: take into account total references when doing backref lookup Reverting both commits above makes quota with 3.15 kernel working on 32bit QEMU/KVM. Investigating further... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.