rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10500 ticks this GP) idle=49ac/1/0x4000000000000000 softirq=155063/155063 fqs=0
rcu: 	(t=10500 jiffies g=150509 q=1092 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g150509 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=104724
rcu: rcu_preempt kthread starved for 10500 jiffies! g150509 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:27224 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7026
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
CPU: 1 UID: 0 PID: 12232 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: mld mld_ifc_work
RIP: 0010:div_s64_rem include/linux/math64.h:42 [inline]
RIP: 0010:get_cycle_time_elapsed net/sched/sch_taprio.c:230 [inline]
RIP: 0010:get_interval_end_time net/sched/sch_taprio.c:240 [inline]
RIP: 0010:find_entry_to_transmit+0x384/0x8d0 net/sched/sch_taprio.c:357
Code: 42 80 3c 38 00 74 08 48 89 ef e8 a7 c2 c5 f8 4c 8b 65 00 49 63 cc 48 89 d8 48 09 c8 48 c1 e8 20 74 0a 48 89 d8 48 99 48 f7 f9 <eb> 07 89 d8 31 d2 41 f7 f4 49 8d 76 28 48 89 f5 48 c1 ed 03 42 0f
RSP: 0018:ffffc9000430ef98 EFLAGS: 00000207
RAX: 000030f2d7295919 RBX: 18799c8783b5d919 RCX: 0000000000008001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000040
RBP: ffff888057d4c130 R08: ffff8880767c62e7 R09: 1ffff1100ecf8c5c
R10: dffffc0000000000 R11: ffffed100ecf8c5d R12: 0000000000008001
R13: ffff888057d4c140 R14: ffff888057d4cd40 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88812623b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f74a6288 CR3: 000000000dd38000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 get_packet_txtime net/sched/sch_taprio.c:502 [inline]
 taprio_enqueue_one+0xb66/0x1650 net/sched/sch_taprio.c:571
 dev_qdisc_enqueue+0x4e/0x260 net/core/dev.c:4118
 __dev_xmit_skb net/core/dev.c:4214 [inline]
 __dev_queue_xmit+0xe83/0x3b50 net/core/dev.c:4729
 dev_queue_xmit include/linux/netdevice.h:3365 [inline]
 neigh_hh_output include/net/neighbour.h:531 [inline]
 neigh_output include/net/neighbour.h:545 [inline]
 ip6_finish_output2+0xf70/0x1480 net/ipv6/ip6_output.c:136
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
 NF_HOOK+0x9e/0x380 include/linux/netfilter.h:318
 mld_sendpack+0x8d4/0xe60 net/ipv6/mcast.c:1855
 mld_send_cr net/ipv6/mcast.c:2154 [inline]
 mld_ifc_work+0x83e/0xd60 net/ipv6/mcast.c:2693
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>