syzbot

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WARNING: CPU: 1 PID: 25 at kernel/sched/deadline.c:1995 enqueue_dl_entity+0x47c/0x590 kernel/sched/deadline.c:2029
Modules linked in:
CPU: 1 UID: 0 PID: 25 Comm: kworker/1:0 Tainted: G    B              6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0
Tainted: [B]=BAD_PAGE
Hardware name: linux,dummy-virt (DT)
Workqueue:  0x0 (wg-crypt-wg0)
pstate: a14000c9 (NzCv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : enqueue_dl_entity+0x47c/0x590 kernel/sched/deadline.c:1995
lr : dl_server_start+0x44/0x12c kernel/sched/deadline.c:1650
sp : ffff800082b93a20
x29: ffff800082b93a20 x28: f5f00000043b3780 x27: 0000000000000000
x26: 0000000000000001 x25: 0000000000000000 x24: 0000000000000048
x23: fff000007f8ee800 x22: 0000000000000001 x21: 000000000016e360
x20: 0000000000000001 x19: fff000007f8ef168 x18: 0000000000000001
x17: 0000000000000313 x16: 0000000000000005 x15: 0000000000000000
x14: 00000000000001a3 x13: 000000000000001c x12: 0000000000000000
x11: fff000007f8ee880 x10: 0000000000000000 x9 : 0000000000000048
x8 : 0000000000100000 x7 : 0000000000000001 x6 : f5f00000043b3740
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000001
Call trace:
 enqueue_dl_entity+0x47c/0x590 kernel/sched/deadline.c:2029
 dl_server_start+0x44/0x12c kernel/sched/deadline.c:1650
 enqueue_task_fair+0x11c/0x3a4 kernel/sched/fair.c:7040
 enqueue_task+0x58/0xbc kernel/sched/core.c:2020
 activate_task+0x68/0x80 kernel/sched/core.c:2062
 attach_task+0x4c/0x74 kernel/sched/fair.c:9631
 attach_tasks kernel/sched/fair.c:9666 [inline]
 sched_balance_rq+0x580/0xc74 kernel/sched/fair.c:11743
 sched_balance_newidle.constprop.0+0x1b0/0x3e4 kernel/sched/fair.c:12785
 pick_next_task_fair+0x50/0x320 kernel/sched/fair.c:8933
 __pick_next_task kernel/sched/core.c:5962 [inline]
 pick_next_task kernel/sched/core.c:6484 [inline]
 __schedule+0x158/0x8e8 kernel/sched/core.c:6636
 __schedule_loop kernel/sched/core.c:6759 [inline]
 schedule+0x34/0x104 kernel/sched/core.c:6774
 worker_thread+0x19c/0x354 kernel/workqueue.c:3406
 kthread+0x114/0x118 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
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