net_ratelimit: 26 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 0, t=10502 jiffies, g=326917, q=19) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295158537-4295148035), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.0 R running task 21816 23828 7779 0x00000000 Call Trace: sched_show_task kernel/sched/core.c:5338 [inline] sched_show_task.cold+0x291/0x2fc kernel/sched/core.c:5313 print_other_cpu_stall kernel/rcu/tree.c:1313 [inline] check_cpu_stall kernel/rcu/tree.c:1441 [inline] rcu_pending kernel/rcu/tree.c:3103 [inline] rcu_sched_clock_irq.cold+0xa10/0xa4a kernel/rcu/tree.c:2544 update_process_times+0x32/0x80 kernel/time/timer.c:1635 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:161 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1271 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline] smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:767 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:184 Code: 48 c7 c0 f0 96 92 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d b2 36 83 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 9c 5f 3e fa 65 8b 05 35 8d f2 78 RSP: 0018:ffff88820baa6bb8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11252de RBX: 0000000000000282 RCX: 1ffff11041f55d2c RDX: dffffc0000000000 RSI: ffff88820faae940 RDI: 0000000000000282 RBP: ffff88820baa6bc8 R08: ffff88820faae0c0 R09: ffff88820faae960 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888041774448 R13: 0000000000000000 R14: 0000000000000003 R15: ffff888041774448 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] __remove_mapping+0x9ba/0x1030 mm/vmscan.c:966 shrink_page_list+0x27ff/0x5830 mm/vmscan.c:1444 shrink_inactive_list+0x610/0x1860 mm/vmscan.c:1932 shrink_list mm/vmscan.c:2240 [inline] shrink_node_memcg+0x621/0x1450 mm/vmscan.c:2505 shrink_node+0x29f/0x1570 mm/vmscan.c:2720 shrink_zones mm/vmscan.c:2953 [inline] do_try_to_free_pages+0x3cb/0x11e0 mm/vmscan.c:3015 try_to_free_mem_cgroup_pages+0x2dd/0xa30 mm/vmscan.c:3319 try_charge+0x564/0x15c0 mm/memcontrol.c:2244 __memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2601 memcg_kmem_charge_memcg include/linux/memcontrol.h:1330 [inline] memcg_charge_slab mm/slab.h:281 [inline] kmem_getpages mm/slab.c:1404 [inline] cache_grow_begin+0x5c0/0x860 mm/slab.c:2671 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3219 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3287 __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1e8/0x6f0 mm/slab.c:3554 ext4_alloc_inode+0x1f/0x640 fs/ext4/super.c:1069 alloc_inode+0x66/0x190 fs/inode.c:210 iget_locked+0x196/0x4a0 fs/inode.c:1168 __ext4_iget+0x27b/0x3f20 fs/ext4/inode.c:4841 swap_inode_boot_loader fs/ext4/ioctl.c:124 [inline] ext4_ioctl+0x1362/0x4390 fs/ext4/ioctl.c:949 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458209 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffa31cfcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000458209 RDX: 0000000000000000 RSI: 0000000000006611 RDI: 000000000000000b RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffa31cfd6d4 R13: 00000000004c0351 R14: 00000000004d1f78 R15: 00000000ffffffff rcu: rcu_preempt kthread starved for 10502 jiffies! g326917 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29168 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 schedule_timeout+0x4db/0xfd0 kernel/time/timer.c:1803 rcu_gp_fqs_loop kernel/rcu/tree.c:1971 [inline] rcu_gp_kthread+0x962/0x17b0 kernel/rcu/tree.c:2128 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 sched: RT throttling activated