BTRFS error (device loop2): superblock checksum mismatch
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kernel BUG at kernel/sched/deadline.c:1068!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 23816 Comm: syz-executor7 Not tainted 4.9.124-g09eb2ba #31
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801981d4800 task.stack: ffff880197160000
RIP: 0010:[<ffffffff8121e4ff>]  [<ffffffff8121e4ff>] __enqueue_dl_entity kernel/sched/deadline.c:987 [inline]
RIP: 0010:[<ffffffff8121e4ff>]  [<ffffffff8121e4ff>] enqueue_dl_entity kernel/sched/deadline.c:1039 [inline]
RIP: 0010:[<ffffffff8121e4ff>]  [<ffffffff8121e4ff>] enqueue_task_dl+0x31f/0x1f40 kernel/sched/deadline.c:1090
RSP: 0018:ffff880197167460  EFLAGS: 00010087
RAX: 0000000000000000 RBX: ffff880199aa9800 RCX: 1ffff1003335536d
RDX: 0000000000000000 RSI: ffff880199aa9800 RDI: ffff880199aa9b68
RBP: ffff8801971674d0 R08: ffff88021fffd018 R09: 000000000000000a
R10: 0000000000000001 R11: 0000000000000078 R12: ffff8801db321c00
R13: ffff880199aa9b10 R14: ffff8801db321c00 R15: 0000000000000000
FS:  00007f4c24fb1700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe7890ef2c CR3: 00000001a3a3a000 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Stack:
 0000000000000002 ffff8801971674a8 ffffffff812324e2 ffff8801981d50c0
 0000000000000046 ffff8801981d4800 ffff8801db321c18 ffff880199aa9c18
 ffff880199aa9800 ffff880199aa9800 ffff8801db321c00 0000000000000000
Call Trace:
 [<ffffffff811ccd23>] enqueue_task kernel/sched/core.c:774 [inline]
 [<ffffffff811ccd23>] activate_task+0x153/0x280 kernel/sched/core.c:790
 [<ffffffff8121d564>] push_dl_task.part.36+0x2e4/0x430 kernel/sched/deadline.c:1638
 [<ffffffff8121d6f6>] push_dl_task kernel/sched/deadline.c:1578 [inline]
 [<ffffffff8121d6f6>] push_dl_tasks.part.37+0x46/0x60 kernel/sched/deadline.c:1654
 [<ffffffff8121d719>] push_dl_tasks+0x9/0x10 kernel/sched/deadline.c:1652
 [<ffffffff811ae305>] __balance_callback+0x95/0xe0 kernel/sched/core.c:2865
 [<ffffffff839f1558>] balance_callback kernel/sched/core.c:2873 [inline]
 [<ffffffff839f1558>] __schedule+0x10a8/0x1bd0 kernel/sched/core.c:3504
 [<ffffffff839f20ff>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff839fbac0>] __rt_mutex_slowlock+0xb0/0x2d0 kernel/locking/rtmutex.c:1221
 [<ffffffff839fbe77>] rt_mutex_slowlock+0x197/0x530 kernel/locking/rtmutex.c:1293
 [<ffffffff839fc23c>] rt_mutex_fastlock kernel/locking/rtmutex.c:1439 [inline]
 [<ffffffff839fc23c>] rt_mutex_lock+0x2c/0x30 kernel/locking/rtmutex.c:1499
 [<ffffffff826ae4dd>] process_notifier+0x9d/0x670 drivers/misc/uid_sys_stats.c:636
 [<ffffffff811a3be4>] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93
 [<ffffffff811a514e>] __blocking_notifier_call_chain kernel/notifier.c:317 [inline]
 [<ffffffff811a514e>] blocking_notifier_call_chain+0x7e/0xa0 kernel/notifier.c:328
 [<ffffffff8129367e>] profile_task_exit+0x1e/0x30 kernel/profile.c:140
 [<ffffffff8114282e>] do_exit+0x9e/0x27b0 kernel/exit.c:736
 [<ffffffff81149251>] do_group_exit+0x111/0x340 kernel/exit.c:937
 [<ffffffff8116c0cf>] get_signal+0x4cf/0x1450 kernel/signal.c:2321
 [<ffffffff81052637>] do_signal+0x87/0x19f0 arch/x86/kernel/signal.c:807
 [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120 arch/x86/entry/common.c:157
 [<ffffffff810064d4>] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline]
 [<ffffffff810064d4>] syscall_return_slowpath arch/x86/entry/common.c:260 [inline]
 [<ffffffff810064d4>] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287
 [<ffffffff83a019d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 48 c1 e8 03 80 3c 10 00 0f 85 c2 11 00 00 41 80 39 00 49 8b 47 48 0f 85 df 11 00 00 48 39 83 58 03 00 00 79 ad 49 8d 47 10 eb ae <0f> 0b 4c 8d 53 3c 48 c7 c6 00 1c 02 00 48 bf 00 00 00 00 00 fc 
RIP  [<ffffffff8121e4ff>] __enqueue_dl_entity kernel/sched/deadline.c:987 [inline]
RIP  [<ffffffff8121e4ff>] enqueue_dl_entity kernel/sched/deadline.c:1039 [inline]
RIP  [<ffffffff8121e4ff>] enqueue_task_dl+0x31f/0x1f40 kernel/sched/deadline.c:1090
 RSP <ffff880197167460>
---[ end trace 2b4793e4b21d34e5 ]---