rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P16064/1:b..l P16062/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=65149, q=2506 ncpus=2)
task:syz.0.2637      state:R  running task     stack:25576 pid:16062 tgid:16062 ppid:5613   task_flags:0x40004c flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7284
 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0x4bd/0x2550 arch/x86/kernel/unwind_orc.c:-1
Code: 7c 16 00 00 83 f8 01 4c 8b 6c 24 50 49 bc 00 00 00 00 00 fc ff df 4c 8b 7c 24 10 49 8d 6e 38 0f 84 8a 16 00 00 e9 ee 01 00 00 <49> 89 d5 49 89 d7 4c 89 e0 4c 29 f8 48 89 c1 48 c1 f9 02 48 c1 e8
RSP: 0018:ffffc9000f897628 EFLAGS: 00000283
RAX: ffffffff91123900 RBX: dffffc0000000000 RCX: 8000000000000000
RDX: ffffffff9093834c RSI: ffffffff91123974 RDI: ffffffff8c6dad20
RBP: ffffffff81781c5c R08: 0000000000000009 R09: 0000000000000000
R10: ffffc9000f897728 R11: fffff52001f12ef1 R12: ffffffff9093836c
R13: ffffffff9093834c R14: ffffc9000f897728 R15: 000000000000781c
 __unwind_start+0x514/0x660 arch/x86/kernel/unwind_orc.c:787
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:183
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:338
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 __free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
 __slab_free+0x274/0x2c0 mm/slub.c:5823
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4683 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 kmem_cache_alloc_noprof+0x2b9/0x600 mm/slub.c:5010
 taskstats_tgid_alloc kernel/taskstats.c:563 [inline]
 taskstats_exit+0x19e/0xe10 kernel/taskstats.c:602
 do_exit+0x6ad/0x2360 kernel/exit.c:956
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
 __do_sys_exit_group kernel/exit.c:1140 [inline]
 __se_sys_exit_group kernel/exit.c:1138 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1138
 x64_sys_call+0x18c6/0x18d0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0ced79e199
RSP: 002b:00007ffe77d0cb18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0ced79e199
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe77d0cb7c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000210
R13: 00000000000927c0 R14: 0000000000060148 R15: 00007ffe77d0cbd0
 </TASK>
task:syz.0.2637      state:R  running task     stack:22856 pid:16064 tgid:16062 ppid:5613   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7284
 preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7463
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 __local_bh_enable_ip+0xe9/0x140 kernel/softirq.c:480
 inet6_fill_ifla6_attrs+0x117e/0x23d0 net/ipv6/addrconf.c:5885
 inet6_fill_link_af+0x9b/0x120 net/ipv6/addrconf.c:5918
 rtnl_fill_link_af+0x1c0/0x4c0 net/core/rtnetlink.c:1973
 rtnl_fill_ifinfo+0x251d/0x2750 net/core/rtnetlink.c:2257
 rtmsg_ifinfo_build_skb+0x180/0x260 net/core/rtnetlink.c:4594
 rtmsg_ifinfo_event net/core/rtnetlink.c:4627 [inline]
 rtmsg_ifinfo+0x8c/0x1a0 net/core/rtnetlink.c:4636
 netif_state_change+0x297/0x3a0 net/core/dev.c:1627
 do_setlink+0x3c57/0x4670 net/core/rtnetlink.c:3518
 rtnl_group_changelink net/core/rtnetlink.c:3924 [inline]
 __rtnl_newlink net/core/rtnetlink.c:4090 [inline]
 rtnl_newlink+0x146f/0x1c30 net/core/rtnetlink.c:4220
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7137
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2575
 netlink_unicast_kernel net/netlink/af_netlink.c:1338 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1364
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2713
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
 __sys_sendmsg net/socket.c:2799 [inline]
 __do_sys_sendmsg net/socket.c:2804 [inline]
 __se_sys_sendmsg net/socket.c:2802 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0ced79e199
RSP: 002b:00007f0cee715028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0ceda25fa0 RCX: 00007f0ced79e199
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f0ced8358e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0ceda26038 R14: 00007f0ceda25fa0 R15: 00007ffe77d0c7d8
 </TASK>