rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2686 jiffies s: 1821 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: 5149 Comm: syz-executor211 Not tainted 6.5.0-rc4-syzkaller-01192-g66244337512f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x0/0x90 kernel/kcov.c:236
Code: 65 8b 15 7b 9f 7d 7e 81 e2 00 01 ff 00 75 10 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 51 9f 7d 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49
RSP: 0018:ffffc900001e0bb8 EFLAGS: 00000207
RAX: 00000001ad7f29ab RBX: 00000000002af31d RCX: ffffffff885a12c6
RDX: 00000001ad7f29ab RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00000001ad7f29ab R08: 0000000000000005 R09: 00000000000f4240
R10: 00000000000f4240 R11: 0000000000094000 R12: 0000000000989680
R13: 0000000000000001 R14: 0000000000044b82 R15: 0000000000000000
FS:  0000555556fa93c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 0000000022e4d000 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:__sanitizer_cov_trace_const_cmp8+0x0/0x20 kernel/kcov.c:310
Code: ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 9a fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 <f3> 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 07 00 00 00 e9 78 fe
RSP: 0018:ffffc9000255f1e0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffea00016d4c40 RCX: 0000000000000000
RDX: 1ffffd40002da988 RSI: 00fff00000000000 RDI: ffffffffffffffff
RBP: 00fff00000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000071f57 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 PageSlab include/linux/page-flags.h:479 [inline]
 __page_table_check_zero+0x9f/0x5e0 mm/page_table_check.c:140
 page_table_check_free include/linux/page_table_check.h:46 [inline]
 free_pages_prepare mm/page_alloc.c:1162 [inline]
 free_unref_page_prepare+0x4f8/0xb90 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:6427
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575
 netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline]
 netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1370
 netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1939
 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: 0033:0x7efe2b241b19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 1f 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffee59ee5d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007efe2b241b19
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffee59ee140 R09: 00007ffee59ee140
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffee59ee5fc
R13: 00007ffee59ee610 R14: 00007ffee59ee650 R15: 0000000000000004
 </TASK>