rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P10439/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=27837, q=1154 ncpus=2)
task:syz.3.1178      state:R  running task     stack:27040 pid:10439 tgid:10431 ppid:5848   task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b88/0x5240 kernel/sched/core.c:6767
 preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7090
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_release+0x244/0x3e0 arch/x86/include/asm/irqflags.h:-1
Code: 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 0f 85 c3 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 48 8b 03 <48> 3b 44 24 28 0f 85 82 01 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000b63f0a0 EFLAGS: 00000206
RAX: f0e335f10c981a00 RBX: ffffffff9368a020 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff8e4fcf45 RDI: ffffffff8ca1b120
RBP: ffff888026f46540 R08: ffffc9000b63f6f8 R09: 0000000000000000
R10: ffffc9000b63f230 R11: fffff520016c7e48 R12: 0000000000000002
R13: ffff888026f45a00 R14: 0000000000000206 R15: ffffffff8ed3dfe0
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0x1a9f/0x23b0 arch/x86/kernel/unwind_orc.c:680
 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
 save_stack+0xfc/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x76/0x1e0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2680
 discard_slab mm/slub.c:2720 [inline]
 __put_partials+0x160/0x1c0 mm/slub.c:3189
 put_cpu_partial+0x17e/0x250 mm/slub.c:3264
 __slab_free+0x294/0x390 mm/slub.c:4516
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4151 [inline]
 slab_alloc_node mm/slub.c:4200 [inline]
 __do_kmalloc_node mm/slub.c:4330 [inline]
 __kvmalloc_node_noprof+0x2ca/0x5a0 mm/slub.c:5016
 netif_alloc_netdev_queues net/core/dev.c:10804 [inline]
 alloc_netdev_mqs+0x92c/0x1210 net/core/dev.c:11679
 ipmr_reg_vif net/ipv4/ipmr.c:579 [inline]
 vif_add+0x5c2/0x1660 net/ipv4/ipmr.c:860
 ip_mroute_setsockopt+0xf39/0x11f0 net/ipv4/ipmr.c:1465
 do_ip_setsockopt+0x1114/0x39c0 net/ipv4/ip_sockglue.c:948
 ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
 do_sock_setsockopt+0x3b1/0x710 net/socket.c:2296
 __sys_setsockopt net/socket.c:2321 [inline]
 __do_sys_setsockopt net/socket.c:2327 [inline]
 __se_sys_setsockopt net/socket.c:2324 [inline]
 __x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2324
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffb1338d169
RSP: 002b:00007ffb141d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ffb135a6160 RCX: 00007ffb1338d169
RDX: 00000000000000ca RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007ffb1340e730 R08: 0000000000000010 R09: 0000000000000000
R10: 00002000000002c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffb135a6160 R15: 00007ffe9d3a4a68
 </TASK>