rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=5993, q=92)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953253-4294942750), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.4  R  running task    24984  8132   8131 0x0000400a
Call Trace:
 <IRQ>
 sched_show_task+0x40f/0x560 kernel/sched/core.c:5954
 print_other_cpu_stall kernel/rcu/tree_stall.h:410 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:538 [inline]
 rcu_pending kernel/rcu/tree.c:2827 [inline]
 rcu_sched_clock_irq+0x1861/0x1ad0 kernel/rcu/tree.c:2271
 update_process_times+0x12d/0x180 kernel/time/timer.c:1726
 tick_sched_handle kernel/time/tick-sched.c:167 [inline]
 tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1514 [inline]
 __hrtimer_run_queues+0x403/0x840 kernel/time/hrtimer.c:1576
 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1638
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:check_kcov_mode kernel/kcov.c:68 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x14/0x50 kernel/kcov.c:102
Code: 00 00 00 48 8b 3d 34 e7 cc 07 48 89 de e8 64 02 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e <f7> c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 83 fa 02 75 21 48 8b 91
RSP: 0018:ffffc90002376cb0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffffffff81486ea4 RBX: ffffea0002432180 RCX: ffff88808f524540
RDX: 0000000000000001 RSI: 00000000fffffffc RDI: ffffea0002432180
RBP: ffffc90002376cf0 R08: 000000000003a768 R09: ffffed1012e6e287
R10: ffffed1012e6e287 R11: 0000000000000000 R12: ffff888091f3ea20
R13: dffffc0000000000 R14: 1ffff110123e7d44 R15: ffff888097371428
 release_task_stack kernel/fork.c:440 [inline]
 put_task_stack+0xa3/0x130 kernel/fork.c:451
 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256
 context_switch kernel/sched/core.c:3388 [inline]
 __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081
 preempt_schedule_irq+0xc1/0x140 kernel/sched/core.c:4338
 retint_kernel+0x1b/0x2b
RIP: 0010:rol32 include/linux/bitops.h:90 [inline]
RIP: 0010:jhash2 include/linux/jhash.h:128 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:152 [inline]
RIP: 0010:stack_depot_save+0x68/0x470 lib/stackdepot.c:233
Code: 89 e9 41 03 01 41 03 71 04 45 03 71 08 44 29 f0 44 89 f3 c1 c3 04 31 c3 41 01 f6 29 de 89 df c1 c7 06 31 f7 44 01 f3 41 29 fe <89> f9 c1 c1 08 44 31 f1 01 df 89 c8 c1 c0 10 29 cb 31 d8 01 f9 29
RSP: 0018:ffffc90002376f00 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: 0000000043d9e1d7 RBX: 00000000f82ab5f5 RCX: 0000000000da9e48
RDX: 0000000000000dc0 RSI: 00000000e499601b RDI: 00000000df25f44d
RBP: ffffc90002376f40 R08: 0000000000000037 R09: ffffc90002376fac
R10: 0000000000000023 R11: 0000000000000000 R12: ffffed1012e16d80
R13: ffffc90002376f70 R14: 00000000c015cf57 R15: ffff8880970b6bff
 save_stack mm/kasan/common.c:73 [inline]
 set_track mm/kasan/common.c:79 [inline]
 __kasan_kmalloc+0x178/0x1b0 mm/kasan/common.c:512
 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:520
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 kmem_cache_alloc+0x1f5/0x2e0 mm/slab.c:3484
 kmem_cache_zalloc include/linux/slab.h:660 [inline]
 __kernfs_new_node+0x97/0x680 fs/kernfs/dir.c:627
 kernfs_new_node+0x97/0x170 fs/kernfs/dir.c:689
 __kernfs_create_file+0x4a/0x2f0 fs/kernfs/file.c:1001
 sysfs_add_file_mode_ns+0x2dc/0x3a0 fs/sysfs/file.c:305
 create_files fs/sysfs/group.c:63 [inline]
 internal_create_group+0x4be/0xd80 fs/sysfs/group.c:148
 internal_create_groups fs/sysfs/group.c:188 [inline]
 sysfs_create_groups+0x75/0x130 fs/sysfs/group.c:214
 device_add_groups drivers/base/core.c:1582 [inline]
 device_add_attrs drivers/base/core.c:1730 [inline]
 device_add+0xaad/0x1ad0 drivers/base/core.c:2430
 netdev_register_kobject+0x152/0x2f0 net/core/net-sysfs.c:1749
 register_netdevice+0xfc9/0x1830 net/core/dev.c:9315
 nsim_create+0x1d4/0x230 drivers/net/netdevsim/netdev.c:309
 __nsim_dev_port_add+0x289/0x4d0 drivers/net/netdevsim/dev.c:648
 nsim_dev_port_add_all drivers/net/netdevsim/dev.c:697 [inline]
 nsim_dev_probe+0xb55/0xef0 drivers/net/netdevsim/dev.c:818
 nsim_bus_probe+0x15/0x20 drivers/net/netdevsim/bus.c:242
 really_probe+0x71c/0xf40 drivers/base/dd.c:548
 driver_probe_device+0xfc/0x260 drivers/base/dd.c:721
 __device_attach_driver+0x336/0x3f0 drivers/base/dd.c:828
 bus_for_each_drv+0x12b/0x180 drivers/base/bus.c:430
 __device_attach+0x1ea/0x390 drivers/base/dd.c:894
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:941
 bus_probe_device+0xb9/0x1f0 drivers/base/bus.c:490
 device_add+0x1710/0x1ad0 drivers/base/core.c:2487
 device_register+0x1d/0x20 drivers/base/core.c:2560
 nsim_bus_dev_new drivers/net/netdevsim/bus.c:288 [inline]
 new_device_store+0x286/0x510 drivers/net/netdevsim/bus.c:182
 bus_attr_store+0x78/0x90 drivers/base/bus.c:121
 sysfs_kf_write+0x281/0x2f0 fs/sysfs/file.c:138
 kernfs_fop_write+0x3e4/0x4e0 fs/kernfs/file.c:315
 __vfs_write+0xb8/0x740 fs/read_write.c:494
 vfs_write+0x275/0x590 fs/read_write.c:558
 ksys_write+0x117/0x220 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:620
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x414130
Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff
RSP: 002b:00007ffec65ee7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000414130
RDX: 0000000000000003 RSI: 00007ffec65ee7e0 RDI: 0000000000000004
RBP: 00007ffec65ee7e0 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004bfc97
R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10579 jiffies! g5993 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29032    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3385 [inline]
 __schedule+0x9a0/0xcc0 kernel/sched/core.c:4081
 schedule+0x181/0x210 kernel/sched/core.c:4155
 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895
 rcu_gp_fqs_loop kernel/rcu/tree.c:1661 [inline]
 rcu_gp_kthread+0xed8/0x1770 kernel/rcu/tree.c:1821
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352