rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2657 jiffies s: 3881 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5403 Comm: syz-executor175 Not tainted 6.5.0-rc5-syzkaller-00241-ge9bbd6016947 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0xf/0x90 kernel/kcov.c:236
Code: 65 48 8b 04 25 80 b9 03 00 48 8b 80 f8 15 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 c1 b6 7d 7e 49 89 f1 89 c6 49 89 d2 <81> e6 00 01 00 00 49 89 f8 65 48 8b 14 25 80 b9 03 00 a9 00 01 ff
RSP: 0018:ffffc900001e0bb8 EFLAGS: 00000206
RAX: 0000000000000102 RBX: 000000000abcc771 RCX: ffffffff88582b96
RDX: 0000068db8bac710 RSI: 0000000000000102 RDI: 0000000000000006
RBP: 0000068db8bac710 R08: 0000000000000005 R09: 0000000000000000
R10: 0000068db8bac710 R11: 0000000000094000 R12: 0000000000002710
R13: 0000000000000004 R14: 000000000112e0be R15: 0000000000000000
FS:  0000555555ae6380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555ae6ca8 CR3: 000000006ecad000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pie_calculate_probability+0x296/0x850 net/sched/sch_pie.c:345
 fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x764/0xb10 kernel/time/timer.c:2022
 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:4090 [inline]
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:4100 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:4134 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0xc9/0x140 kernel/rcu/tree.c:4118
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 72 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 18 48 8d 7b 70 48 89 fa 48 c1 ea 03 80 3c 02 00 <75> 5a 48 8b 53 70 b8 01 00 00 00 48 85 d5 74 0c 65 ff 0d 28 d9 94
RSP: 0018:ffffc9000318f198 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffffff8c9b2000 RCX: 0000000000000000
RDX: 1ffffffff193640e RSI: ffffffff8ac81120 RDI: ffffffff8c9b2070
RBP: 0000000000000002 R08: 0000000000000007 R09: 000000000007ffff
R10: 0000000000000008 R11: 0000000000071db0 R12: ffff888013a00000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000004d8ba5d80a
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x23/0x40 kernel/rcu/update.c:348
 lookup_page_ext mm/page_ext.c:287 [inline]
 page_ext_get+0x134/0x310 mm/page_ext.c:168
 __reset_page_owner+0x2f/0x190 mm/page_owner.c:145
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1161 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348
 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443
 vfree+0x181/0x7a0 mm/vmalloc.c:2842
 kvfree+0x33/0x50 mm/util.c:648
 __qdisc_destroy+0xc4/0x450 net/sched/sch_generic.c:1063
 qdisc_put+0xd1/0xf0 net/sched/sch_generic.c:1090
 notify_and_destroy net/sched/sch_api.c:1047 [inline]
 qdisc_graft+0x1122/0x1680 net/sched/sch_api.c:1144
 tc_modify_qdisc+0xcd2/0x1bf0 net/sched/sch_api.c:1731
 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6428
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0xd9/0x180 net/socket.c:748
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f53fd2551e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 1a 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcbc818ec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f53fd2551e9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffcbc818a30 R09: 00007ffcbc818a30
R10: 00007ffcbc818a30 R11: 0000000000000246 R12: 00007ffcbc818eec
R13: 00007ffcbc818f00 R14: 00007ffcbc818f40 R15: 0000000000000034
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.943 msecs