Hello,
Saw this WARNING a few times while fuzzing the kernel with Trinity in a qemu virtual machine:
[ 22.883257] idr_remove called for id=4096 which is not allocated. [ 22.884487] Pid: 2303, comm: trinity-child1 Not tainted 3.8.0+ #87 [ 22.885601] Call Trace: [ 22.886080] [<ffffffff8134b111>] idr_remove+0x131/0x1f0 [ 22.887107] [<ffffffff8143c678>] drm_ctxbitmap_free+0x38/0x50 [ 22.888158] [<ffffffff8143cbd3>] drm_rmctx+0x63/0x100 [ 22.889091] [<ffffffff8143d710>] drm_ioctl+0x3d0/0x4d0 [ 22.890034] [<ffffffff8143cb70>] ? drm_newctx+0xb0/0xb0 [ 22.890970] [<ffffffff812fb640>] ? avc_has_perm_flags+0x1d0/0x2a0 [ 22.892127] [<ffffffff812fb498>] ? avc_has_perm_flags+0x28/0x2a0 [ 22.893218] [<ffffffff810f5b18>] ? trace_hardirqs_off_caller+0x28/0xd0 [ 22.894401] [<ffffffff810f5bcd>] ? trace_hardirqs_off+0xd/0x10 [ 22.895461] [<ffffffff811b5ff2>] do_vfs_ioctl+0x532/0x580 [ 22.896447] [<ffffffff812fc7d3>] ? file_has_perm+0x83/0xa0 [ 22.897453] [<ffffffff811b609d>] sys_ioctl+0x5d/0xa0 [ 22.898429] [<ffffffff813571de>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 22.899629] [<ffffffff81ca07e9>] system_call_fastpath+0x16/0x1b
Tommi