rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=5414/1/0x4000000000000000 softirq=76061/76062 fqs=87
rcu: 	(t=10502 jiffies g=66401 q=554 ncpus=2)
rcu: rcu_preempt kthread starved for 10322 jiffies! g66401 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:28048 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0xf43/0x5890 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111
CPU: 1 UID: 0 PID: 17173 Comm: syz.3.3128 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x70 kernel/kcov.c:213
Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 54 05 4a 7e 65 8b 05 55 05 4a 7e a9 00 01 ff 00 <48> 8b 34 24 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0
RSP: 0018:ffffc90000a183c8 EFLAGS: 00000206
RAX: 0000000000000302 RBX: ffff88807d4c3394 RCX: ffffffff8969759b
RDX: ffff888055caa440 RSI: 0000000000000009 RDI: 0000000000000004
RBP: 0000000000000009 R08: 0000000000000004 R09: 0000000000000009
R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000010
R13: ffff888067d9c044 R14: 0000000000000000 R15: 0000000000000001
FS:  00007f347cb356c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f347cb35d58 CR3: 000000005d87a000 CR4: 00000000003526f0
DR0: 0000000000000007 DR1: 000000000000000b DR2: 0000000000000002
DR3: 0000000000000009 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 taprio_dequeue_tc_priority+0x259/0x4b0 net/sched/sch_taprio.c:787
 taprio_dequeue+0x12c/0x5f0 net/sched/sch_taprio.c:857
 dequeue_skb net/sched/sch_generic.c:293 [inline]
 qdisc_restart net/sched/sch_generic.c:398 [inline]
 __qdisc_run+0x1bd/0x1a10 net/sched/sch_generic.c:416
 __dev_xmit_skb net/core/dev.c:4043 [inline]
 __dev_queue_xmit+0x2aa4/0x43e0 net/core/dev.c:4550
 dev_queue_xmit include/linux/netdevice.h:3305 [inline]
 neigh_resolve_output net/core/neighbour.c:1514 [inline]
 neigh_resolve_output+0x53a/0x940 net/core/neighbour.c:1494
 neigh_output include/net/neighbour.h:539 [inline]
 ip6_finish_output2+0xb20/0x20a0 net/ipv6/ip6_output.c:141
 __ip6_finish_output net/ipv6/ip6_output.c:215 [inline]
 ip6_finish_output+0x3f9/0x1360 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:303 [inline]
 ip6_output+0x1f8/0x540 net/ipv6/ip6_output.c:247
 dst_output include/net/dst.h:459 [inline]
 NF_HOOK include/linux/netfilter.h:314 [inline]
 ndisc_send_skb+0xa69/0x1c50 net/ipv6/ndisc.c:511
 ndisc_send_rs+0x129/0x670 net/ipv6/ndisc.c:721
 addrconf_rs_timer+0x407/0x840 net/ipv6/addrconf.c:4033
 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1789
 expire_timers kernel/time/timer.c:1840 [inline]
 __run_timers+0x6e8/0x930 kernel/time/timer.c:2414
 __run_timer_base kernel/time/timer.c:2426 [inline]
 __run_timer_base kernel/time/timer.c:2418 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2435
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2445
 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 26 a8 3d f6 48 89 df e8 7e 27 3e f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 35 fe 2e f6 65 8b 05 a6 e3 aa 74 85 c0 74 16 5b
RSP: 0018:ffffc90004fc7818 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffff888051c9fa80 RCX: 1ffffffff2de1273
RDX: 0000000000000000 RSI: ffffffff8b6ced20 RDI: ffffffff8bd35100
RBP: 0000000000000282 R08: 0000000000000001 R09: fffffbfff2dd7bb0
R10: ffffffff96ebdd87 R11: 0000000000000004 R12: 0000000000000002
R13: ffff888051c9fac0 R14: ffff888051c9f468 R15: ffff888051c9f8e8
 __unix_dgram_recvmsg+0x32a/0xe50 net/unix/af_unix.c:2456
 unix_dgram_recvmsg+0xd0/0x110 net/unix/af_unix.c:2531
 sock_recvmsg_nosec net/socket.c:1023 [inline]
 ____sys_recvmsg+0x5f8/0x6b0 net/socket.c:2791
 ___sys_recvmsg+0x115/0x1a0 net/socket.c:2835
 do_recvmmsg+0x2f8/0x740 net/socket.c:2930
 __sys_recvmmsg net/socket.c:3004 [inline]
 __do_sys_recvmmsg net/socket.c:3027 [inline]
 __se_sys_recvmmsg net/socket.c:3020 [inline]
 __x64_sys_recvmmsg+0x239/0x290 net/socket.c:3020
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f347bd8cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f347cb35038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f347bfa6080 RCX: 00007f347bd8cde9
RDX: 0000000000010106 RSI: 00004000000000c0 RDI: 0000000000000004
RBP: 00007f347be0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f347bfa6080 R15: 00007ffe9cd964d8
 </TASK>