Tx-ring is not supported.
------------[ cut here ]------------
WARNING: CPU: 1 PID: 21543 at kernel/sched/tune.c:519 schedtune_cancel_attach+0x1c/0x20 kernel/sched/tune.c:519
SchedTune cancel attach not implemented[  296.336725] Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 21543 Comm: syz-executor6 Not tainted 4.9.119-g9dc978d #75
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff880192be7640 ffffffff81eb4be9 ffffffff83c48980 00000000ffffffff
 0000000000000000 0000000000000001 0000000000000207 ffff880192be7700
 ffffffff81421c95 0000000041b58ab3 ffffffff843bc020 ffffffff81421ad6
Call Trace:
 [<ffffffff81eb4be9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb4be9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81421c95>] panic+0x1bf/0x3bc kernel/panic.c:179
 [<ffffffff81421f81>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff811366d2>] warn_slowpath_fmt+0xc2/0x100 kernel/panic.c:565
 [<ffffffff81226a2c>] schedtune_cancel_attach+0x1c/0x20 kernel/sched/tune.c:519
 [<ffffffff81313cee>] cgroup_taskset_migrate+0xade/0xea0 kernel/cgroup.c:2597
 [<ffffffff81315da3>] cgroup_update_dfl_csses kernel/cgroup.c:3121 [inline]
 [<ffffffff81315da3>] cgroup_apply_control+0x523/0x650 kernel/cgroup.c:3357
 [<ffffffff813168a2>] cgroup_subtree_control_write+0x9d2/0xf40 kernel/cgroup.c:3490
 [<ffffffff8130b22d>] cgroup_file_write+0x10d/0x550 kernel/cgroup.c:3517
 [<ffffffff8170c05e>] kernfs_fop_write+0x2ae/0x460 fs/kernfs/file.c:316
 [<ffffffff8156ed95>] __vfs_write+0x115/0x580 fs/read_write.c:507
 [<ffffffff81572e57>] vfs_write+0x187/0x530 fs/read_write.c:557
 [<ffffffff81576c89>] SYSC_write fs/read_write.c:604 [inline]
 [<ffffffff81576c89>] SyS_write+0xd9/0x1c0 fs/read_write.c:596
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839fccd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..