rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8182
rcu: 	(detected by 1, t=10502 jiffies, g=16113, q=2679 ncpus=2)
task:syz.1.642       state:R  running task     stack:22784 pid:8182  tgid:8181  ppid:5847   task_flags:0x400140 flags:0x0000400e
Call Trace:
 <IRQ>
 sched_show_task+0x49d/0x630
 print_other_cpu_stall+0xf7a/0x1340
 rcu_sched_clock_irq+0xa47/0x11b0
 update_process_times+0x23c/0x2f0
 tick_nohz_handler+0x39a/0x520
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:its_return_thunk+0x0/0x10
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 ab 42 b7 f5 cc
RSP: 0018:ffffc900001e0350 EFLAGS: 00000283
RAX: 0000000000000002 RBX: ffffc900001e0401 RCX: 854f2061d376f600
RDX: 0000000000000007 RSI: ffffffff8dba5d65 RDI: ffff888020709cc0
RBP: dffffc0000000000 R08: ffffc900001e0487 R09: 0000000000000000
R10: ffffc900001e0478 R11: fffff5200003c091 R12: ffffc900001e07c0
R13: ffffc900001d9000 R14: ffffc900001e0428 R15: ffffffff8172c195
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 skb_release_data+0x62d/0x7c0
 sk_skb_reason_drop+0x127/0x170
 hsr_forward_skb+0x1ac6/0x2860
 send_hsr_supervision_frame+0x612/0xb30
 hsr_announce+0x1d5/0x360
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 2f c7 ea 09 e8 5a 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90006836e58 EFLAGS: 00000282
RAX: 854f2061d376f600 RBX: 0000000000000000 RCX: 854f2061d376f600
RDX: 0000000000000007 RSI: ffffffff8d9b6adf RDI: ffffffff8be33300
RBP: ffffc90006836eb0 R08: ffffffff8fa38137 R09: 1ffffffff1f47026
R10: dffffc0000000000 R11: fffffbfff1f47027 R12: ffff888020709cc0
R13: dffffc0000000000 R14: ffff888109980000 R15: ffff88813663ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule+0x7c/0xc0
Code: fc ff df 4a 89 04 33 65 8b 05 a0 d0 25 07 a9 ff ff ff 7f 75 15 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 2d <48> c7 04 24 0e 36 e0 45 4a c7 04 33 00 00 00 00 65 48 8b 05 5c d0
RSP: 0018:ffffc90006837240 EFLAGS: 00000246
RAX: 1ffff110040e1398 RBX: 1ffff92000d06e48 RCX: 854f2061d376f600
RDX: 0000000000000000 RSI: ffffffff8be332e0 RDI: ffffffff8be332a0
RBP: ffffc900068372c8 R08: ffffffff8fa38137 R09: 1ffffffff1f47026
R10: dffffc0000000000 R11: fffffbfff1f47027 R12: dffffc0000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88802454e980
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock+0x3f/0x50
 __handle_mm_fault+0x3a6c/0x5440
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0x764/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 c3 cc cc cc cc 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc90006837758 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888106ba0000 RCX: 0000000000000a28
RDX: 0000000000000001 RSI: 00002000004c3000 RDI: ffff888106ba2ec0
RBP: ffffc900068378b0 R08: ffff888106ba7fff R09: 1ffff11020d74fff
R10: dffffc0000000000 R11: ffffed1020d75000 R12: 1ffff92000d06f77
R13: 00002000004c0140 R14: ffffc90006837bc8 R15: 0000000000008000
 _copy_from_iter+0x24c/0x16f0
 kcm_sendmsg+0xf00/0x2ad0
 __sock_sendmsg+0x21c/0x270
 sock_write_iter+0x258/0x330
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f88b2d8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f88b3c99038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f88b2fd5fa0 RCX: 00007f88b2d8eba9
RDX: 00000000fffffdef RSI: 0000200000000140 RDI: 0000000000000007
RBP: 00007f88b2e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f88b2fd6038 R14: 00007f88b2fd5fa0 R15: 00007ffd41bd8c18
 </TASK>
