rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4474 1-.... } 2632 jiffies s: 1005 root: 0x2/T
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5339 Comm: syz-executor172 Not tainted 6.4.0-syzkaller-00082-gc0a572d9d32f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 46 45 8f 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <f3> 0f 1e fa 65 8b 05 2d 6f 7f 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc900001e0cc8 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 000000000000b36a RCX: ffffffff883fdb12
RDX: ffff88807681d940 RSI: 0000000000000100 RDI: 0000000000000004
RBP: ffff88807b63e350 R08: 0000000000000004 R09: 000000000000ee3c
R10: 000000000000b36a R11: 0000000000094001 R12: dffffc0000000000
R13: 0000000000000007 R14: 000000000000ee3c R15: ffff88807b63e300
FS:  00007f807634d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f80764295a8 CR3: 00000000481ec000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 fq_pie_timer+0x193/0x4f0 net/sched/sch_fq_pie.c:388
 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751
 __run_timers kernel/time/timer.c:2022 [inline]
 __run_timers kernel/time/timer.c:1995 [inline]
 run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_release+0x3f4/0x670 kernel/locking/lockdep.c:5713
Code: 7e 83 f8 01 0f 85 40 01 00 00 9c 58 f6 c4 02 0f 85 2b 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c5 48 c7 45 00 00 00 00 00 c7 45 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000321f230 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: b8707686c29149c1 RCX: ffffc9000321f280
RDX: 1ffff1100ed03c7f RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92000643e48 R08: 0000000000000001 R09: ffffffff8e7a9657
R10: fffffbfff1cf52ca R11: 0000000000094001 R12: 0000000000000001
R13: ffff88807681e400 R14: 0000000000000002 R15: ffff88807681d940
 mod_memcg_page_state include/linux/memcontrol.h:570 [inline]
 vfree+0x16d/0x7e0 mm/vmalloc.c:2793
 kvfree+0x32/0x50 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+0xf39/0x1470 net/sched/sch_api.c:1144
 tc_modify_qdisc+0xc38/0x1c30 net/sched/sch_api.c:1731
 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6417
 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2546
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:747
 ____sys_sendmsg+0x722/0x900 net/socket.c:2503
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2557
 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2586
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f807639be89
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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:00007f807634d318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8076425408 RCX: 00007f807639be89
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 00007f8076425400 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f807642540c
R13: 00007ffc58eab71f R14: 00007f807634d400 R15: 0000000000022000
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.672 msecs