| TITLE: INFO: rcu detected stall in fuse_dev_release |
| TYPE: HANG |
| |
| [ 629.392020] INFO: rcu_sched detected stalls on CPUs/tasks: |
| [ 629.397716] (detected by 0, t=105007 jiffies, g=118924, c=118923, q=65) |
| [ 629.404568] All QSes seen, last rcu_sched kthread activity 105014 (4295296700-4295191686), jiffies_till_next_fqs=3, root ->qsmask 0x0 |
| [ 629.416688] syz-executor7 R running task 23352 14084 4424 0x00000008 |
| [ 629.423888] Call Trace: |
| [ 629.426460] <IRQ> |
| [ 629.428611] sched_show_task.cold.84+0x27a/0x301 |
| [ 629.459938] print_other_cpu_stall.cold.77+0x92f/0x9d2 |
| [ 629.498729] check_cpu_stall.isra.60+0x721/0xf70 |
| [ 629.570316] rcu_check_callbacks+0x23f/0xcd0 |
| [ 629.647174] update_process_times+0x2d/0x70 |
| [ 629.651489] tick_sched_handle+0x9f/0x180 |
| [ 629.655627] tick_sched_timer+0x45/0x130 |
| [ 629.659679] __hrtimer_run_queues+0x3eb/0x10c0 |
| [ 629.708023] hrtimer_interrupt+0x2f3/0x750 |
| [ 629.712277] smp_apic_timer_interrupt+0x165/0x730 |
| [ 629.739746] apic_timer_interrupt+0xf/0x20 |
| [ 629.743963] </IRQ> |
| [ 629.746192] RIP: 0010:check_memory_region+0x121/0x1b0 |
| [ 629.770657] RSP: 0018:ffff88018fec7388 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 |
| [ 629.778358] RAX: ffffed0039557a49 RBX: 1ffff10039557a48 RCX: ffffffff815faf29 |
| [ 629.785618] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801caabd240 |
| [ 629.792874] RBP: ffff88018fec73a0 R08: ffffed0039557a49 R09: ffffed0039557a48 |
| [ 629.800131] R10: ffffed0039557a48 R11: ffff8801caabd243 R12: ffffed0039557a49 |
| [ 629.807389] R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8801caabd240 |
| [ 629.820455] kasan_check_read+0x11/0x20 |
| [ 629.824417] native_queued_spin_lock_slowpath+0x189/0x1200 |
| [ 629.924285] do_raw_spin_lock+0x1a7/0x200 |
| [ 629.928436] _raw_spin_lock+0x32/0x40 |
| [ 629.936113] request_end+0x400/0xb20 |
| [ 629.948990] end_requests+0x296/0x460 |
| [ 629.983347] fuse_dev_release+0x18c/0x2e0 |
| [ 630.004675] __fput+0x355/0x8b0 |
| [ 630.015712] ____fput+0x15/0x20 |
| [ 630.018984] task_work_run+0x1ec/0x2a0 |
| [ 630.031840] exit_to_usermode_loop+0x313/0x370 |
| [ 630.044964] do_syscall_64+0x6be/0x820 |
| [ 630.073391] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 630.078571] RIP: 0033:0x456b29 |
| [ 630.101035] RSP: 002b:00007fae499f2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 |
| [ 630.108738] RAX: 0000000000000030 RBX: 00007fae499f36d4 RCX: 0000000000456b29 |
| [ 630.116002] RDX: 0000000000001000 RSI: 0000000020001000 RDI: 0000000000000017 |
| [ 630.123265] RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 |
| [ 630.130534] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff |
| [ 630.137793] R13: 00000000004d2b40 R14: 00000000004c7b8b R15: 0000000000000000 |
| [ 630.145073] rcu_sched kthread starved for 105755 jiffies! g118924 c118923 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1 |
| [ 630.155808] RCU grace-period kthread stack dump: |
| [ 630.160554] rcu_sched R running task 23688 10 2 0x80000000 |
| [ 630.167746] Call Trace: |
| [ 630.170332] __schedule+0x87c/0x1ec0 |
| [ 630.195223] schedule+0xfb/0x450 |
| [ 630.229166] schedule_timeout+0x140/0x260 |
| [ 630.242118] rcu_gp_kthread+0x717/0x1c90 |
| [ 630.389446] kthread+0x345/0x410 |
| [ 630.401684] ret_from_fork+0x3a/0x50 |
