rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P142/1:b..l
rcu: (detected by 1, t=10506 jiffies, g=23561, q=198 ncpus=2)
task:kworker/u4:5 state:R running task stack:24464 pid:142 tgid:142 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7008
irqentry_exit+0x36/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x1ef/0x520 kernel/locking/lockdep.c:5721
Code: c1 05 bd 68 9a 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000263fa08 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920004c7f43 RCX: 00000000c454b0cc
RDX: 0000000000000001 RSI: ffffffff8accbc20 RDI: ffffffff8b2ee5c0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23e29d0
R10: ffffffff91f14e87 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8cfabce0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
rcu_read_lock include/linux/rcupdate.h:747 [inline]
inet_twsk_purge+0x12f/0x900 net/ipv4/inet_timewait_sock.c:292
ops_exit_list+0x125/0x170 net/core/net_namespace.c:175
cleanup_net+0x505/0xb20 net/core/net_namespace.c:614
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g23561 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=19119
rcu: rcu_preempt kthread starved for 10506 jiffies! g23561 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:27808 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8237 Comm: syz-executor.4 Not tainted 6.6.0-syzkaller-15891-ge316dd1cf135 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:__sanitizer_cov_trace_cmp4+0x8/0x20 kernel/kcov.c:278
Code: 00 00 f3 0f 1e fa 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 02 00 00 00 e9 48 ff ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 8b 0c 24 <89> f2 89 fe bf 04 00 00 00 e9 2a ff ff ff 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90000007d18 EFLAGS: 00000086
RAX: 0000000000000007 RBX: ffff88802c096088 RCX: ffffffff889f3eff
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 0000000000000002 R08: 0000000000000001 R09: ffffed1005812c10
R10: ffff88802c096087 R11: 0000000000000002 R12: 0000000000000001
R13: ffff88802c096010 R14: 0000000000000002 R15: dffffc0000000000
FS: 00007f23195306c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9ea64c56be CR3: 000000003e49b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
taprio_set_budgets+0x1df/0x310 net/sched/sch_taprio.c:675
advance_sched+0x5de/0xc60 net/sched/sch_taprio.c:988
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x203/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 ba e7 f6 48 89 df e8 de 31 e8 f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 f5 e6 d9 f6 65 8b 05 c6 66 83 75 85 c0 74 12 5b
RSP: 0018:ffffc900183af0b8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff888043fe62e8 RCX: 1ffffffff23ec730
RDX: 0000000000000000 RSI: ffffffff8accb920 RDI: ffffffff8b2ee5c0
RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff23e29e8
R10: ffffffff91f14f47 R11: 0000000000000004 R12: 7fffffffffffffff
R13: 0000000000000002 R14: 0000000000000007 R15: 0000000000000000
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
taprio_change+0x28cb/0x38a0 net/sched/sch_taprio.c:1993
taprio_init+0x6c4/0x950 net/sched/sch_taprio.c:2134
qdisc_create+0x4f7/0x10a0 net/sched/sch_api.c:1326
tc_modify_qdisc+0x4d5/0x1c40 net/sched/sch_api.c:1747
rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6558
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2545
netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1368
netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
____sys_sendmsg+0x6ac/0x940 net/socket.c:2584
___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
__sys_sendmsg+0x117/0x1e0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f231887cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f23195300c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f231899bf80 RCX: 00007f231887cae9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000006
RBP: 00007f23188c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f231899bf80 R15: 00007fff4a5504d8