sched: DL replenish lagged too much ------------[ cut here ]------------ 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: 4674 Comm: syz-executor332 Not tainted 4.9.108-gb7d377b #47 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801da396000 task.stack: ffff8801d7848000 RIP: 0010:[] [] __enqueue_dl_entity kernel/sched/deadline.c:987 [inline] RIP: 0010:[] [] enqueue_dl_entity kernel/sched/deadline.c:1039 [inline] RIP: 0010:[] [] enqueue_task_dl+0x31f/0x1f40 kernel/sched/deadline.c:1090 RSP: 0018:ffff8801d784f460 EFLAGS: 00010087 RAX: 0000000000000000 RBX: ffff8801da393000 RCX: 1ffff1003b47266d RDX: 0000000000000000 RSI: ffff8801da393000 RDI: ffff8801da393368 RBP: ffff8801d784f4d0 R08: ffff88021fffd018 R09: 0000000000000008 R10: 0000000000000001 R11: 0000000000000078 R12: ffff8801db321c00 R13: ffff8801da393310 R14: ffff8801db321c00 R15: 0000000000000000 FS: 00007fe3caf84700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff3c914cc4 CR3: 00000001c57ee000 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000002 ffff8801d784f4a8 ffffffff812301d2 ffff8801da3968c0 0000000000000046 ffff8801da396000 ffff8801db321c18 ffff8801da393418 ffff8801da393000 ffff8801da393000 ffff8801db321c00 0000000000000000 Call Trace: [] enqueue_task kernel/sched/core.c:774 [inline] [] activate_task+0x153/0x280 kernel/sched/core.c:790 [] push_dl_task.part.36+0x2e4/0x430 kernel/sched/deadline.c:1638 [] push_dl_task kernel/sched/deadline.c:1578 [inline] [] push_dl_tasks.part.37+0x46/0x60 kernel/sched/deadline.c:1654 [] push_dl_tasks+0x9/0x10 kernel/sched/deadline.c:1652 [] __balance_callback+0x95/0xe0 kernel/sched/core.c:2869 [] balance_callback kernel/sched/core.c:2877 [inline] [] __schedule+0x10a8/0x1bd0 kernel/sched/core.c:3508 [] schedule+0x7f/0x1b0 kernel/sched/core.c:3557 [] __rt_mutex_slowlock+0xb0/0x2d0 kernel/locking/rtmutex.c:1221 [] rt_mutex_slowlock+0x197/0x530 kernel/locking/rtmutex.c:1293 [] rt_mutex_fastlock kernel/locking/rtmutex.c:1439 [inline] [] rt_mutex_lock+0x2c/0x30 kernel/locking/rtmutex.c:1499 [] process_notifier+0x9d/0x670 drivers/misc/uid_sys_stats.c:636 [] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93 [] __blocking_notifier_call_chain kernel/notifier.c:317 [inline] [] blocking_notifier_call_chain+0x7e/0xa0 kernel/notifier.c:328 [] profile_task_exit+0x1e/0x30 kernel/profile.c:140 [] do_exit+0x9e/0x27c0 kernel/exit.c:740 [] do_group_exit+0x111/0x340 kernel/exit.c:941 [] get_signal+0x4cf/0x1450 kernel/signal.c:2321 [] do_signal+0x87/0x19f0 arch/x86/kernel/signal.c:807 [] exit_to_usermode_loop+0xe1/0x120 arch/x86/entry/common.c:157 [] prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline] [] syscall_return_slowpath arch/x86/entry/common.c:260 [inline] [] do_syscall_64+0x364/0x490 arch/x86/entry/common.c:287 [] 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 [] __enqueue_dl_entity kernel/sched/deadline.c:987 [inline] RIP [] enqueue_dl_entity kernel/sched/deadline.c:1039 [inline] RIP [] enqueue_task_dl+0x31f/0x1f40 kernel/sched/deadline.c:1090 RSP ---[ end trace 7b1465cdb360c824 ]---